./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-restricted-15/java_Sequence.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/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_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-restricted-15/java_Sequence.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/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_7e7dc661-4309-4123-b639-cd975c7e7ce5/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 4c7fd2dfb73ccf40686976b843bd7f2e1f45b17323a2ffa706fb90cccb1bab75 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:19:17,778 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:19:17,904 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 05:19:17,910 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:19:17,911 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:19:17,938 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:19:17,943 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:19:17,944 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:19:17,945 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:19:17,950 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:19:17,951 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:19:17,951 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:19:17,952 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:19:17,956 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:19:17,957 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:19:17,957 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:19:17,958 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:19:17,958 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:19:17,959 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:19:17,959 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:19:17,960 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:19:17,960 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:19:17,961 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:19:17,961 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:19:17,962 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:19:17,962 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:19:17,963 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:19:17,963 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:19:17,963 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:19:17,964 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:19:17,964 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:19:17,965 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:19:17,965 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:19:17,965 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:19:17,965 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:19:17,966 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:19:17,966 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:19:17,966 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:19:17,967 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:19:17,967 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:19:17,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:19:17,967 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:19:17,968 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:19:17,968 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:19:17,969 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_7e7dc661-4309-4123-b639-cd975c7e7ce5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c7fd2dfb73ccf40686976b843bd7f2e1f45b17323a2ffa706fb90cccb1bab75 [2023-11-19 05:19:18,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:19:18,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:19:18,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:19:18,315 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:19:18,315 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:19:18,316 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/termination-restricted-15/java_Sequence.c [2023-11-19 05:19:21,286 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:19:21,516 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:19:21,516 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/sv-benchmarks/c/termination-restricted-15/java_Sequence.c [2023-11-19 05:19:21,524 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/data/70a3109e6/f017dd446e3d4b0e8208af5a55968a33/FLAGfd6d9fd5e [2023-11-19 05:19:21,542 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/data/70a3109e6/f017dd446e3d4b0e8208af5a55968a33 [2023-11-19 05:19:21,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:19:21,552 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:19:21,558 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:19:21,558 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:19:21,566 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:19:21,570 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:19:21" (1/1) ... [2023-11-19 05:19:21,571 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58c1426a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:21, skipping insertion in model container [2023-11-19 05:19:21,571 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:19:21" (1/1) ... [2023-11-19 05:19:21,594 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:19:21,763 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:19:21,769 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:19:21,781 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:19:21,794 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:19:21,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:21 WrapperNode [2023-11-19 05:19:21,795 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:19:21,796 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:19:21,796 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:19:21,796 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:19:21,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:21" (1/1) ... [2023-11-19 05:19:21,809 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:21" (1/1) ... [2023-11-19 05:19:21,832 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2023-11-19 05:19:21,832 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:19:21,833 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:19:21,833 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:19:21,833 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:19:21,841 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:21" (1/1) ... [2023-11-19 05:19:21,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:21" (1/1) ... [2023-11-19 05:19:21,842 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:21" (1/1) ... [2023-11-19 05:19:21,843 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:21" (1/1) ... [2023-11-19 05:19:21,844 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:21" (1/1) ... [2023-11-19 05:19:21,848 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:21" (1/1) ... [2023-11-19 05:19:21,849 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:21" (1/1) ... [2023-11-19 05:19:21,850 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:21" (1/1) ... [2023-11-19 05:19:21,851 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:19:21,852 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:19:21,852 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:19:21,852 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:19:21,853 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:21" (1/1) ... [2023-11-19 05:19:21,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:19:21,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:19:21,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:19:21,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:19:21,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:19:21,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:19:22,020 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:19:22,023 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:19:22,199 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:19:22,222 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:19:22,223 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 05:19:22,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:19:22 BoogieIcfgContainer [2023-11-19 05:19:22,227 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:19:22,231 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:19:22,231 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:19:22,234 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:19:22,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:19:21" (1/3) ... [2023-11-19 05:19:22,236 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93b4991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:19:22, skipping insertion in model container [2023-11-19 05:19:22,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:21" (2/3) ... [2023-11-19 05:19:22,236 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93b4991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:19:22, skipping insertion in model container [2023-11-19 05:19:22,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:19:22" (3/3) ... [2023-11-19 05:19:22,238 INFO L112 eAbstractionObserver]: Analyzing ICFG java_Sequence.c [2023-11-19 05:19:22,259 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:19:22,259 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-19 05:19:22,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:19:22,336 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;@3637dd85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:19:22,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-19 05:19:22,342 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 19 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 05:19:22,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:19:22,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:22,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:19:22,352 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 05:19:22,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:22,361 INFO L85 PathProgramCache]: Analyzing trace with hash 77233, now seen corresponding path program 1 times [2023-11-19 05:19:22,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:19:22,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704526657] [2023-11-19 05:19:22,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:22,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:19:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:22,536 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 05:19:22,537 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:19:22,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704526657] [2023-11-19 05:19:22,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704526657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:19:22,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:19:22,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:19:22,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320569761] [2023-11-19 05:19:22,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:19:22,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:19:22,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:19:22,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:19:22,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:19:22,581 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 19 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) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:19:22,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:22,617 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2023-11-19 05:19:22,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:19:22,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 05:19:22,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:22,628 INFO L225 Difference]: With dead ends: 20 [2023-11-19 05:19:22,628 INFO L226 Difference]: Without dead ends: 17 [2023-11-19 05:19:22,631 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 05:19:22,635 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:22,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 10 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:19:22,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-11-19 05:19:22,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-11-19 05:19:22,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:19:22,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2023-11-19 05:19:22,679 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 3 [2023-11-19 05:19:22,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:22,680 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2023-11-19 05:19:22,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:19:22,682 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2023-11-19 05:19:22,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:19:22,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:22,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:19:22,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:19:22,684 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 05:19:22,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:22,685 INFO L85 PathProgramCache]: Analyzing trace with hash 2394268, now seen corresponding path program 1 times [2023-11-19 05:19:22,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:19:22,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947940307] [2023-11-19 05:19:22,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:22,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:19:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:22,753 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 05:19:22,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:19:22,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947940307] [2023-11-19 05:19:22,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947940307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:19:22,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:19:22,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:19:22,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420658472] [2023-11-19 05:19:22,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:19:22,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:19:22,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:19:22,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:19:22,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:19:22,757 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:19:22,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:22,803 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2023-11-19 05:19:22,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:19:22,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 05:19:22,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:22,805 INFO L225 Difference]: With dead ends: 25 [2023-11-19 05:19:22,805 INFO L226 Difference]: Without dead ends: 23 [2023-11-19 05:19:22,806 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 05:19:22,808 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:22,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 22 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:19:22,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-19 05:19:22,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-19 05:19:22,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 22 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 05:19:22,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2023-11-19 05:19:22,815 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 4 [2023-11-19 05:19:22,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:22,815 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2023-11-19 05:19:22,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:19:22,816 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2023-11-19 05:19:22,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:19:22,816 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:22,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:19:22,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:19:22,817 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 05:19:22,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:22,818 INFO L85 PathProgramCache]: Analyzing trace with hash 74222355, now seen corresponding path program 1 times [2023-11-19 05:19:22,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:19:22,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498121978] [2023-11-19 05:19:22,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:22,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:19:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:22,900 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 05:19:22,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:19:22,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498121978] [2023-11-19 05:19:22,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498121978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:19:22,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:19:22,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:19:22,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302865397] [2023-11-19 05:19:22,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:19:22,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:19:22,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:19:22,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:19:22,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:19:22,904 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 05:19:22,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:22,931 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2023-11-19 05:19:22,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:19:22,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 05:19:22,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:22,934 INFO L225 Difference]: With dead ends: 23 [2023-11-19 05:19:22,934 INFO L226 Difference]: Without dead ends: 22 [2023-11-19 05:19:22,935 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 05:19:22,937 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:22,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 11 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:19:22,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-19 05:19:22,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-11-19 05:19:22,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 21 states have internal predecessors, (24), 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 05:19:22,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2023-11-19 05:19:22,945 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 5 [2023-11-19 05:19:22,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:22,945 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2023-11-19 05:19:22,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 05:19:22,946 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2023-11-19 05:19:22,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:19:22,946 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:22,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:19:22,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:19:22,947 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 05:19:22,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:22,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1955624985, now seen corresponding path program 1 times [2023-11-19 05:19:22,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:19:22,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888202356] [2023-11-19 05:19:22,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:22,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:19:22,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:22,989 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 05:19:22,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:19:22,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888202356] [2023-11-19 05:19:22,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888202356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:19:22,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:19:22,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:19:22,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222438951] [2023-11-19 05:19:22,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:19:22,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:19:22,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:19:22,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:19:22,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:19:22,996 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 3 states, 3 states have (on average 2.0) 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 05:19:23,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:23,026 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2023-11-19 05:19:23,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:19:23,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) 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 05:19:23,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:23,028 INFO L225 Difference]: With dead ends: 33 [2023-11-19 05:19:23,029 INFO L226 Difference]: Without dead ends: 21 [2023-11-19 05:19:23,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 05:19:23,031 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:23,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 23 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:19:23,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-19 05:19:23,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-19 05:19:23,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 20 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 05:19:23,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2023-11-19 05:19:23,037 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 6 [2023-11-19 05:19:23,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:23,038 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2023-11-19 05:19:23,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) 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 05:19:23,038 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2023-11-19 05:19:23,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:19:23,042 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:23,042 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 05:19:23,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:19:23,043 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 05:19:23,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:23,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1773031667, now seen corresponding path program 1 times [2023-11-19 05:19:23,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:19:23,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184848925] [2023-11-19 05:19:23,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:23,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:19:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:23,142 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 05:19:23,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:19:23,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184848925] [2023-11-19 05:19:23,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184848925] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:19:23,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404294079] [2023-11-19 05:19:23,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:23,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:19:23,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:19:23,146 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:19:23,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:19:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:23,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:19:23,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:23,268 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 05:19:23,269 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:19:23,317 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 05:19:23,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404294079] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:19:23,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1595401322] [2023-11-19 05:19:23,341 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-19 05:19:23,342 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:19:23,347 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:19:23,352 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:19:23,353 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:19:23,552 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:19:23,633 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '301#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 99) (<= 2147483647 |ULTIMATE.start_main_~c~0#1|))' at error location [2023-11-19 05:19:23,634 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:19:23,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:19:23,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-11-19 05:19:23,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287392839] [2023-11-19 05:19:23,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:19:23,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:19:23,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:19:23,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:19:23,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-19 05:19:23,637 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:19:23,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:23,686 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2023-11-19 05:19:23,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:19:23,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 05:19:23,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:23,689 INFO L225 Difference]: With dead ends: 55 [2023-11-19 05:19:23,689 INFO L226 Difference]: Without dead ends: 53 [2023-11-19 05:19:23,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-19 05:19:23,691 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 32 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:23,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 42 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:19:23,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-19 05:19:23,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2023-11-19 05:19:23,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 46 states have internal predecessors, (57), 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 05:19:23,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2023-11-19 05:19:23,712 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 9 [2023-11-19 05:19:23,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:23,712 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2023-11-19 05:19:23,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:19:23,713 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2023-11-19 05:19:23,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:19:23,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:23,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:19:23,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:19:23,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:19:23,935 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 05:19:23,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:23,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1257035288, now seen corresponding path program 1 times [2023-11-19 05:19:23,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:19:23,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895193882] [2023-11-19 05:19:23,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:23,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:19:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:23,978 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 05:19:23,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:19:23,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895193882] [2023-11-19 05:19:23,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895193882] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:19:23,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210532095] [2023-11-19 05:19:23,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:23,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:19:23,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:19:23,981 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:19:23,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:19:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:24,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:19:24,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:24,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:19:24,039 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:19:24,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210532095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:19:24,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:19:24,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-19 05:19:24,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253317834] [2023-11-19 05:19:24,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:19:24,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:19:24,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:19:24,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:19:24,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:19:24,042 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 05:19:24,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:24,056 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2023-11-19 05:19:24,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:19:24,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 05:19:24,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:24,058 INFO L225 Difference]: With dead ends: 47 [2023-11-19 05:19:24,058 INFO L226 Difference]: Without dead ends: 46 [2023-11-19 05:19:24,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:19:24,059 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:24,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 17 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:19:24,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-19 05:19:24,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-11-19 05:19:24,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 45 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 05:19:24,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2023-11-19 05:19:24,068 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 11 [2023-11-19 05:19:24,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:24,068 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2023-11-19 05:19:24,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 05:19:24,069 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2023-11-19 05:19:24,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:19:24,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:24,070 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1] [2023-11-19 05:19:24,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:19:24,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:19:24,279 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 05:19:24,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:24,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1218586031, now seen corresponding path program 1 times [2023-11-19 05:19:24,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:19:24,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359741604] [2023-11-19 05:19:24,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:24,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:19:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:24,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:19:24,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:19:24,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359741604] [2023-11-19 05:19:24,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359741604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:19:24,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:19:24,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:19:24,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7778191] [2023-11-19 05:19:24,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:19:24,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:19:24,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:19:24,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:19:24,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:19:24,311 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 05:19:24,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:24,322 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2023-11-19 05:19:24,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:19:24,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 05:19:24,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:24,324 INFO L225 Difference]: With dead ends: 46 [2023-11-19 05:19:24,324 INFO L226 Difference]: Without dead ends: 45 [2023-11-19 05:19:24,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 05:19:24,325 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:24,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 17 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:19:24,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-19 05:19:24,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-11-19 05:19:24,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 44 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 05:19:24,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2023-11-19 05:19:24,332 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 11 [2023-11-19 05:19:24,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:24,333 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2023-11-19 05:19:24,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 05:19:24,333 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2023-11-19 05:19:24,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 05:19:24,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:24,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:19:24,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 05:19:24,335 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 05:19:24,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:24,335 INFO L85 PathProgramCache]: Analyzing trace with hash 313388334, now seen corresponding path program 1 times [2023-11-19 05:19:24,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:19:24,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428879786] [2023-11-19 05:19:24,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:24,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:19:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:24,373 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 05:19:24,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:19:24,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428879786] [2023-11-19 05:19:24,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428879786] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:19:24,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292795975] [2023-11-19 05:19:24,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:24,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:19:24,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:19:24,375 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:19:24,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:19:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:24,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:19:24,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:24,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:19:24,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:19:24,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292795975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:19:24,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:19:24,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-19 05:19:24,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55303400] [2023-11-19 05:19:24,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:19:24,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:19:24,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:19:24,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:19:24,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:19:24,429 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 05:19:24,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:24,443 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2023-11-19 05:19:24,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:19:24,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-19 05:19:24,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:24,445 INFO L225 Difference]: With dead ends: 60 [2023-11-19 05:19:24,445 INFO L226 Difference]: Without dead ends: 59 [2023-11-19 05:19:24,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:19:24,446 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:24,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:19:24,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-19 05:19:24,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2023-11-19 05:19:24,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 57 states have internal predecessors, (64), 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 05:19:24,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2023-11-19 05:19:24,455 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 12 [2023-11-19 05:19:24,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:24,456 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2023-11-19 05:19:24,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 05:19:24,456 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2023-11-19 05:19:24,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 05:19:24,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:24,457 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:19:24,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:19:24,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:19:24,677 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 05:19:24,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:24,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1342499028, now seen corresponding path program 1 times [2023-11-19 05:19:24,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:19:24,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171690837] [2023-11-19 05:19:24,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:24,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:19:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:24,720 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 05:19:24,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:19:24,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171690837] [2023-11-19 05:19:24,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171690837] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:19:24,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029621973] [2023-11-19 05:19:24,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:24,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:19:24,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:19:24,722 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:19:24,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:19:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:24,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:19:24,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:24,777 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:19:24,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:19:24,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029621973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:19:24,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:19:24,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-19 05:19:24,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574107540] [2023-11-19 05:19:24,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:19:24,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:19:24,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:19:24,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:19:24,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:19:24,781 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:19:24,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:24,819 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2023-11-19 05:19:24,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:19:24,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-19 05:19:24,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:24,823 INFO L225 Difference]: With dead ends: 58 [2023-11-19 05:19:24,823 INFO L226 Difference]: Without dead ends: 57 [2023-11-19 05:19:24,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:19:24,824 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:24,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 15 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:19:24,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-19 05:19:24,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 44. [2023-11-19 05:19:24,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:19:24,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2023-11-19 05:19:24,832 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 17 [2023-11-19 05:19:24,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:24,832 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2023-11-19 05:19:24,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:19:24,832 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2023-11-19 05:19:24,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 05:19:24,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:24,845 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1] [2023-11-19 05:19:24,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:19:25,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:19:25,046 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 05:19:25,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:25,046 INFO L85 PathProgramCache]: Analyzing trace with hash 2100133340, now seen corresponding path program 2 times [2023-11-19 05:19:25,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:19:25,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199555135] [2023-11-19 05:19:25,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:25,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:19:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:25,200 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:25,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:19:25,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199555135] [2023-11-19 05:19:25,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199555135] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:19:25,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146129681] [2023-11-19 05:19:25,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:19:25,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:19:25,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:19:25,203 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:19:25,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 05:19:25,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-19 05:19:25,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:19:25,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:19:25,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:25,305 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:25,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:19:25,396 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:25,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146129681] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:19:25,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1708798527] [2023-11-19 05:19:25,400 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-19 05:19:25,400 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:19:25,400 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:19:25,401 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:19:25,401 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:19:25,484 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:19:25,603 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1189#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 99) (<= 2147483647 |ULTIMATE.start_main_~c~0#1|))' at error location [2023-11-19 05:19:25,603 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:19:25,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:19:25,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-19 05:19:25,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67626050] [2023-11-19 05:19:25,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:19:25,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 05:19:25,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:19:25,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 05:19:25,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2023-11-19 05:19:25,606 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:19:25,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:25,722 INFO L93 Difference]: Finished difference Result 106 states and 126 transitions. [2023-11-19 05:19:25,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 05:19:25,723 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-19 05:19:25,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:25,724 INFO L225 Difference]: With dead ends: 106 [2023-11-19 05:19:25,731 INFO L226 Difference]: Without dead ends: 104 [2023-11-19 05:19:25,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2023-11-19 05:19:25,732 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 86 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:25,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 68 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:19:25,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-19 05:19:25,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2023-11-19 05:19:25,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 102 states have (on average 1.1176470588235294) internal successors, (114), 103 states have internal predecessors, (114), 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 05:19:25,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 114 transitions. [2023-11-19 05:19:25,761 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 114 transitions. Word has length 24 [2023-11-19 05:19:25,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:25,762 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 114 transitions. [2023-11-19 05:19:25,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:19:25,762 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 114 transitions. [2023-11-19 05:19:25,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-19 05:19:25,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:25,765 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1] [2023-11-19 05:19:25,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:19:25,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:19:25,979 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 05:19:25,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:25,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1499959740, now seen corresponding path program 3 times [2023-11-19 05:19:25,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:19:25,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091615407] [2023-11-19 05:19:25,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:25,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:19:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:26,297 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:26,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:19:26,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091615407] [2023-11-19 05:19:26,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091615407] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:19:26,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358372623] [2023-11-19 05:19:26,298 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 05:19:26,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:19:26,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:19:26,299 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:19:26,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 05:19:26,359 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 05:19:26,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:19:26,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 05:19:26,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:26,453 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:26,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:19:26,799 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:26,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358372623] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:19:26,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [90529130] [2023-11-19 05:19:26,801 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-19 05:19:26,802 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:19:26,803 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:19:26,803 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:19:26,803 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:19:26,883 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:19:27,122 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1787#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 99) (<= 2147483647 |ULTIMATE.start_main_~c~0#1|))' at error location [2023-11-19 05:19:27,122 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:19:27,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:19:27,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2023-11-19 05:19:27,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970737190] [2023-11-19 05:19:27,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:19:27,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 05:19:27,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:19:27,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 05:19:27,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=468, Unknown=0, NotChecked=0, Total=756 [2023-11-19 05:19:27,125 INFO L87 Difference]: Start difference. First operand 104 states and 114 transitions. Second operand has 24 states, 23 states have (on average 4.695652173913044) internal successors, (108), 23 states have internal predecessors, (108), 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 05:19:27,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:27,371 INFO L93 Difference]: Finished difference Result 226 states and 270 transitions. [2023-11-19 05:19:27,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 05:19:27,372 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.695652173913044) internal successors, (108), 23 states have internal predecessors, (108), 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 54 [2023-11-19 05:19:27,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:27,374 INFO L225 Difference]: With dead ends: 226 [2023-11-19 05:19:27,374 INFO L226 Difference]: Without dead ends: 224 [2023-11-19 05:19:27,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 134 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=288, Invalid=468, Unknown=0, NotChecked=0, Total=756 [2023-11-19 05:19:27,376 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 327 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:27,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 138 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:19:27,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-19 05:19:27,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2023-11-19 05:19:27,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 222 states have (on average 1.1081081081081081) internal successors, (246), 223 states have internal predecessors, (246), 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 05:19:27,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 246 transitions. [2023-11-19 05:19:27,395 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 246 transitions. Word has length 54 [2023-11-19 05:19:27,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:27,395 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 246 transitions. [2023-11-19 05:19:27,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.695652173913044) internal successors, (108), 23 states have internal predecessors, (108), 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 05:19:27,396 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 246 transitions. [2023-11-19 05:19:27,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-19 05:19:27,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:27,401 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 1, 1] [2023-11-19 05:19:27,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:19:27,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 05:19:27,622 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 05:19:27,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:27,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1102946684, now seen corresponding path program 4 times [2023-11-19 05:19:27,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:19:27,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423864637] [2023-11-19 05:19:27,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:27,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:19:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:28,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:28,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:19:28,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423864637] [2023-11-19 05:19:28,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423864637] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:19:28,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657564452] [2023-11-19 05:19:28,358 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 05:19:28,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:19:28,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:19:28,359 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:19:28,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 05:19:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:28,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 05:19:28,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:28,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:28,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:19:29,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:29,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657564452] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:19:29,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1317786243] [2023-11-19 05:19:29,608 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-19 05:19:29,609 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:19:29,609 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:19:29,609 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:19:29,609 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:19:29,673 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:19:30,328 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3057#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 99) (<= 2147483647 |ULTIMATE.start_main_~c~0#1|))' at error location [2023-11-19 05:19:30,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:19:30,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:19:30,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2023-11-19 05:19:30,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376656747] [2023-11-19 05:19:30,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:19:30,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-19 05:19:30,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:19:30,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-19 05:19:30,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1140, Invalid=1512, Unknown=0, NotChecked=0, Total=2652 [2023-11-19 05:19:30,333 INFO L87 Difference]: Start difference. First operand 224 states and 246 transitions. Second operand has 48 states, 47 states have (on average 4.851063829787234) internal successors, (228), 47 states have internal predecessors, (228), 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 05:19:31,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:31,107 INFO L93 Difference]: Finished difference Result 466 states and 558 transitions. [2023-11-19 05:19:31,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-19 05:19:31,107 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.851063829787234) internal successors, (228), 47 states have internal predecessors, (228), 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 114 [2023-11-19 05:19:31,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:31,111 INFO L225 Difference]: With dead ends: 466 [2023-11-19 05:19:31,111 INFO L226 Difference]: Without dead ends: 464 [2023-11-19 05:19:31,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 290 SyntacticMatches, 23 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1810 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1140, Invalid=1512, Unknown=0, NotChecked=0, Total=2652 [2023-11-19 05:19:31,113 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 638 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:31,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 282 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:19:31,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2023-11-19 05:19:31,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2023-11-19 05:19:31,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 462 states have (on average 1.103896103896104) internal successors, (510), 463 states have internal predecessors, (510), 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 05:19:31,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 510 transitions. [2023-11-19 05:19:31,136 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 510 transitions. Word has length 114 [2023-11-19 05:19:31,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:31,137 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 510 transitions. [2023-11-19 05:19:31,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.851063829787234) internal successors, (228), 47 states have internal predecessors, (228), 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 05:19:31,137 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 510 transitions. [2023-11-19 05:19:31,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-11-19 05:19:31,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:31,144 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 1, 1] [2023-11-19 05:19:31,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 05:19:31,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 05:19:31,365 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 05:19:31,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:31,366 INFO L85 PathProgramCache]: Analyzing trace with hash 624517372, now seen corresponding path program 5 times [2023-11-19 05:19:31,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:19:31,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854965024] [2023-11-19 05:19:31,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:31,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:19:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:33,928 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:33,928 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:19:33,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854965024] [2023-11-19 05:19:33,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854965024] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:19:33,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881121016] [2023-11-19 05:19:33,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:19:33,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:19:33,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:19:33,930 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:19:33,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 05:19:34,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2023-11-19 05:19:34,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:19:34,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-19 05:19:34,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:34,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:19:37,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:37,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881121016] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:19:37,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [357210425] [2023-11-19 05:19:37,858 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-19 05:19:37,858 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:19:37,858 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:19:37,858 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:19:37,859 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:19:37,914 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:19:39,663 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5671#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 99) (<= 2147483647 |ULTIMATE.start_main_~c~0#1|))' at error location [2023-11-19 05:19:39,664 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:19:39,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:19:39,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2023-11-19 05:19:39,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842387881] [2023-11-19 05:19:39,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:19:39,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-11-19 05:19:39,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:19:39,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-11-19 05:19:39,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4572, Invalid=5328, Unknown=0, NotChecked=0, Total=9900 [2023-11-19 05:19:39,673 INFO L87 Difference]: Start difference. First operand 464 states and 510 transitions. Second operand has 96 states, 95 states have (on average 4.926315789473684) internal successors, (468), 95 states have internal predecessors, (468), 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 05:19:42,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:42,867 INFO L93 Difference]: Finished difference Result 946 states and 1134 transitions. [2023-11-19 05:19:42,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-11-19 05:19:42,867 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.926315789473684) internal successors, (468), 95 states have internal predecessors, (468), 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 234 [2023-11-19 05:19:42,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:42,873 INFO L225 Difference]: With dead ends: 946 [2023-11-19 05:19:42,873 INFO L226 Difference]: Without dead ends: 944 [2023-11-19 05:19:42,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 602 SyntacticMatches, 47 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7090 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=4572, Invalid=5328, Unknown=0, NotChecked=0, Total=9900 [2023-11-19 05:19:42,879 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2139 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2139 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 474 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:42,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2139 Valid, 570 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [474 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 05:19:42,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2023-11-19 05:19:42,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 944. [2023-11-19 05:19:42,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 942 states have (on average 1.1019108280254777) internal successors, (1038), 943 states have internal predecessors, (1038), 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 05:19:42,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1038 transitions. [2023-11-19 05:19:42,915 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1038 transitions. Word has length 234 [2023-11-19 05:19:42,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:42,916 INFO L495 AbstractCegarLoop]: Abstraction has 944 states and 1038 transitions. [2023-11-19 05:19:42,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.926315789473684) internal successors, (468), 95 states have internal predecessors, (468), 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 05:19:42,916 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1038 transitions. [2023-11-19 05:19:42,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2023-11-19 05:19:42,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:42,926 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 94, 1, 1] [2023-11-19 05:19:42,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-19 05:19:43,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 05:19:43,139 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 05:19:43,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:43,140 INFO L85 PathProgramCache]: Analyzing trace with hash 766468092, now seen corresponding path program 6 times [2023-11-19 05:19:43,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:19:43,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33209667] [2023-11-19 05:19:43,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:43,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:19:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:51,377 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:51,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:19:51,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33209667] [2023-11-19 05:19:51,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33209667] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:19:51,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646745063] [2023-11-19 05:19:51,377 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 05:19:51,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:19:51,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:19:51,383 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:19:51,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e7dc661-4309-4123-b639-cd975c7e7ce5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 05:19:51,542 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 05:19:51,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:19:51,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 96 conjunts are in the unsatisfiable core [2023-11-19 05:19:51,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:52,273 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:52,274 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:20:03,780 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:20:03,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646745063] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:20:03,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [814665406] [2023-11-19 05:20:03,783 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-19 05:20:03,783 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:20:03,783 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:20:03,783 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:20:03,784 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:20:03,836 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:20:09,827 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10973#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 99) (<= 2147483647 |ULTIMATE.start_main_~c~0#1|))' at error location [2023-11-19 05:20:09,827 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:20:09,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:20:09,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2023-11-19 05:20:09,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141944356] [2023-11-19 05:20:09,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:20:09,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-11-19 05:20:09,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:09,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-11-19 05:20:09,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18348, Invalid=19872, Unknown=0, NotChecked=0, Total=38220 [2023-11-19 05:20:09,848 INFO L87 Difference]: Start difference. First operand 944 states and 1038 transitions. Second operand has 192 states, 191 states have (on average 4.963350785340314) internal successors, (948), 191 states have internal predecessors, (948), 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)