./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-restricted-15/Ex08.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/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_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-restricted-15/Ex08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/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_c6694771-c71f-4c4e-a085-1cced63a076e/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 e9f5cf3ddf7f2bce97ea02caa876a19793443837e6b09c62b997f759c9b40cc6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:55:22,995 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:55:23,160 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 04:55:23,173 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:55:23,175 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:55:23,229 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:55:23,230 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:55:23,231 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:55:23,232 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:55:23,239 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:55:23,239 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:55:23,241 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:55:23,242 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:55:23,244 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:55:23,245 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:55:23,245 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:55:23,246 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:55:23,247 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:55:23,247 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:55:23,248 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:55:23,248 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:55:23,249 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:55:23,251 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:55:23,252 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:55:23,252 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:55:23,253 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:55:23,253 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:55:23,254 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:55:23,254 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:55:23,255 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:55:23,257 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:55:23,257 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:55:23,257 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:55:23,258 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:55:23,258 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:55:23,258 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:55:23,259 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:55:23,260 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:55:23,260 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:55:23,260 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:55:23,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:55:23,261 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:55:23,262 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:55:23,262 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:55:23,263 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_c6694771-c71f-4c4e-a085-1cced63a076e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9f5cf3ddf7f2bce97ea02caa876a19793443837e6b09c62b997f759c9b40cc6 [2023-11-19 04:55:23,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:55:23,719 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:55:23,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:55:23,724 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:55:23,725 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:55:23,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/termination-restricted-15/Ex08.c [2023-11-19 04:55:26,906 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:55:27,119 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:55:27,120 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/sv-benchmarks/c/termination-restricted-15/Ex08.c [2023-11-19 04:55:27,128 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/data/622c80230/d56b46bdf85b4985ae9afbaa772a2b84/FLAG54f014f3d [2023-11-19 04:55:27,143 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/data/622c80230/d56b46bdf85b4985ae9afbaa772a2b84 [2023-11-19 04:55:27,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:55:27,148 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:55:27,149 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:55:27,149 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:55:27,155 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:55:27,156 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:55:27" (1/1) ... [2023-11-19 04:55:27,157 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30c31b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:27, skipping insertion in model container [2023-11-19 04:55:27,157 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:55:27" (1/1) ... [2023-11-19 04:55:27,177 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:55:27,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:55:27,362 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:55:27,374 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:55:27,389 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:55:27,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:27 WrapperNode [2023-11-19 04:55:27,389 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:55:27,391 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:55:27,391 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:55:27,391 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:55:27,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:27" (1/1) ... [2023-11-19 04:55:27,403 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:27" (1/1) ... [2023-11-19 04:55:27,421 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2023-11-19 04:55:27,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:55:27,422 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:55:27,422 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:55:27,422 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:55:27,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:27" (1/1) ... [2023-11-19 04:55:27,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:27" (1/1) ... [2023-11-19 04:55:27,430 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:27" (1/1) ... [2023-11-19 04:55:27,430 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:27" (1/1) ... [2023-11-19 04:55:27,432 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:27" (1/1) ... [2023-11-19 04:55:27,434 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:27" (1/1) ... [2023-11-19 04:55:27,435 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:27" (1/1) ... [2023-11-19 04:55:27,435 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:27" (1/1) ... [2023-11-19 04:55:27,436 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:55:27,437 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:55:27,437 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:55:27,438 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:55:27,439 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:27" (1/1) ... [2023-11-19 04:55:27,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:55:27,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:55:27,473 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:55:27,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:55:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:55:27,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:55:27,636 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:55:27,637 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:55:27,725 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:55:27,765 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:55:27,765 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:55:27,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:55:27 BoogieIcfgContainer [2023-11-19 04:55:27,770 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:55:27,778 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:55:27,778 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:55:27,782 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:55:27,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:55:27" (1/3) ... [2023-11-19 04:55:27,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1bf4f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:55:27, skipping insertion in model container [2023-11-19 04:55:27,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:27" (2/3) ... [2023-11-19 04:55:27,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1bf4f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:55:27, skipping insertion in model container [2023-11-19 04:55:27,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:55:27" (3/3) ... [2023-11-19 04:55:27,790 INFO L112 eAbstractionObserver]: Analyzing ICFG Ex08.c [2023-11-19 04:55:27,813 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:55:27,813 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-19 04:55:27,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:55:27,863 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;@5e132ae2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:55:27,864 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 04:55:27,868 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:55:27,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 04:55:27,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:27,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 04:55:27,875 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 04:55:27,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:27,880 INFO L85 PathProgramCache]: Analyzing trace with hash 2345865, now seen corresponding path program 1 times [2023-11-19 04:55:27,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:27,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495318065] [2023-11-19 04:55:27,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:27,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:28,087 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 04:55:28,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:28,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495318065] [2023-11-19 04:55:28,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495318065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:55:28,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:55:28,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:55:28,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085068488] [2023-11-19 04:55:28,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:55:28,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:55:28,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:28,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:55:28,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:55:28,148 INFO L87 Difference]: Start difference. First operand has 12 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:55:28,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:28,194 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2023-11-19 04:55:28,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:55:28,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 04:55:28,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:28,219 INFO L225 Difference]: With dead ends: 14 [2023-11-19 04:55:28,220 INFO L226 Difference]: Without dead ends: 10 [2023-11-19 04:55:28,223 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 04:55:28,227 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:28,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:55:28,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-19 04:55:28,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2023-11-19 04:55:28,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:55:28,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2023-11-19 04:55:28,268 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 4 [2023-11-19 04:55:28,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:28,268 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2023-11-19 04:55:28,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:55:28,268 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2023-11-19 04:55:28,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:55:28,269 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:28,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:55:28,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:55:28,270 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 04:55:28,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:28,271 INFO L85 PathProgramCache]: Analyzing trace with hash 72721881, now seen corresponding path program 1 times [2023-11-19 04:55:28,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:28,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800105590] [2023-11-19 04:55:28,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:28,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:28,347 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 04:55:28,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:28,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800105590] [2023-11-19 04:55:28,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800105590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:55:28,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:55:28,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:55:28,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130755640] [2023-11-19 04:55:28,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:55:28,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:55:28,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:28,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:55:28,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:55:28,352 INFO L87 Difference]: Start difference. First operand 9 states and 10 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 04:55:28,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:28,385 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2023-11-19 04:55:28,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:55:28,386 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 04:55:28,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:28,387 INFO L225 Difference]: With dead ends: 9 [2023-11-19 04:55:28,387 INFO L226 Difference]: Without dead ends: 8 [2023-11-19 04:55:28,387 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 04:55:28,389 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:28,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:55:28,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-11-19 04:55:28,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-11-19 04:55:28,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:55:28,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2023-11-19 04:55:28,394 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2023-11-19 04:55:28,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:28,394 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2023-11-19 04:55:28,395 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 04:55:28,395 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2023-11-19 04:55:28,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:55:28,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:28,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:55:28,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:55:28,396 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 04:55:28,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:28,397 INFO L85 PathProgramCache]: Analyzing trace with hash 72715923, now seen corresponding path program 1 times [2023-11-19 04:55:28,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:28,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374157056] [2023-11-19 04:55:28,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:28,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:28,518 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 04:55:28,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:28,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374157056] [2023-11-19 04:55:28,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374157056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:55:28,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:55:28,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:55:28,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764769181] [2023-11-19 04:55:28,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:55:28,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:55:28,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:28,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:55:28,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:55:28,522 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:55:28,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:28,568 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2023-11-19 04:55:28,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:55:28,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 04:55:28,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:28,570 INFO L225 Difference]: With dead ends: 16 [2023-11-19 04:55:28,570 INFO L226 Difference]: Without dead ends: 15 [2023-11-19 04:55:28,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:55:28,573 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:28,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:55:28,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-19 04:55:28,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-11-19 04:55:28,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:55:28,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2023-11-19 04:55:28,579 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2023-11-19 04:55:28,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:28,580 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2023-11-19 04:55:28,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:55:28,580 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2023-11-19 04:55:28,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 04:55:28,581 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:28,581 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1] [2023-11-19 04:55:28,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:55:28,582 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 04:55:28,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:28,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1424187046, now seen corresponding path program 1 times [2023-11-19 04:55:28,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:28,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237511354] [2023-11-19 04:55:28,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:28,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:28,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:55:28,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:28,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237511354] [2023-11-19 04:55:28,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237511354] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:55:28,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849898448] [2023-11-19 04:55:28,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:28,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:28,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:55:28,816 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:55:28,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:55:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:28,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 04:55:28,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:55:29,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:55:29,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:55:29,258 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:55:29,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849898448] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:55:29,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1626111190] [2023-11-19 04:55:29,291 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2023-11-19 04:55:29,291 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:55:29,295 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:55:29,301 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:55:29,302 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:55:29,457 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:55:29,527 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '167#(and (= |ULTIMATE.start_main_~up~0#1| 1) (<= 2147483647 |ULTIMATE.start_main_~i~0#1|))' at error location [2023-11-19 04:55:29,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:55:29,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:55:29,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-11-19 04:55:29,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164050376] [2023-11-19 04:55:29,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:55:29,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 04:55:29,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:29,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 04:55:29,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-11-19 04:55:29,531 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:55:29,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:29,701 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2023-11-19 04:55:29,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 04:55:29,702 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 04:55:29,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:29,703 INFO L225 Difference]: With dead ends: 46 [2023-11-19 04:55:29,703 INFO L226 Difference]: Without dead ends: 39 [2023-11-19 04:55:29,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2023-11-19 04:55:29,706 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 28 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:29,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 10 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:55:29,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-19 04:55:29,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2023-11-19 04:55:29,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:55:29,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2023-11-19 04:55:29,730 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 9 [2023-11-19 04:55:29,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:29,731 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2023-11-19 04:55:29,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:55:29,731 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2023-11-19 04:55:29,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 04:55:29,733 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:29,734 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1] [2023-11-19 04:55:29,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:55:29,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:29,955 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 04:55:29,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:29,956 INFO L85 PathProgramCache]: Analyzing trace with hash -228821841, now seen corresponding path program 2 times [2023-11-19 04:55:29,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:29,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156479752] [2023-11-19 04:55:29,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:29,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:30,231 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:55:30,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:30,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156479752] [2023-11-19 04:55:30,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156479752] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:55:30,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844385928] [2023-11-19 04:55:30,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:55:30,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:30,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:55:30,237 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:55:30,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:55:30,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-19 04:55:30,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:55:30,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 04:55:30,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:55:30,511 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:55:30,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:55:30,682 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:55:30,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844385928] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:55:30,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1669291954] [2023-11-19 04:55:30,685 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2023-11-19 04:55:30,686 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:55:30,686 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:55:30,686 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:55:30,687 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:55:30,762 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:55:30,831 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '418#(and (= |ULTIMATE.start_main_~up~0#1| 1) (<= 2147483647 |ULTIMATE.start_main_~i~0#1|))' at error location [2023-11-19 04:55:30,832 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:55:30,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:55:30,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 9] total 22 [2023-11-19 04:55:30,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525176772] [2023-11-19 04:55:30,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:55:30,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 04:55:30,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:30,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 04:55:30,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=562, Unknown=0, NotChecked=0, Total=756 [2023-11-19 04:55:30,835 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 24 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 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 04:55:31,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:31,510 INFO L93 Difference]: Finished difference Result 136 states and 172 transitions. [2023-11-19 04:55:31,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-19 04:55:31,511 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-19 04:55:31,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:31,514 INFO L225 Difference]: With dead ends: 136 [2023-11-19 04:55:31,515 INFO L226 Difference]: Without dead ends: 121 [2023-11-19 04:55:31,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=660, Invalid=1790, Unknown=0, NotChecked=0, Total=2450 [2023-11-19 04:55:31,518 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 111 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:31,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 11 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:55:31,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-19 04:55:31,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 60. [2023-11-19 04:55:31,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 59 states have internal predecessors, (71), 0 states have call successors, (0), 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 04:55:31,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2023-11-19 04:55:31,539 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 21 [2023-11-19 04:55:31,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:31,539 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2023-11-19 04:55:31,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 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 04:55:31,544 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2023-11-19 04:55:31,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 04:55:31,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:31,547 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 1, 1] [2023-11-19 04:55:31,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:55:31,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:31,763 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 04:55:31,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:31,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1891194073, now seen corresponding path program 3 times [2023-11-19 04:55:31,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:31,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666747436] [2023-11-19 04:55:31,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:31,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:32,222 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:55:32,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:32,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666747436] [2023-11-19 04:55:32,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666747436] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:55:32,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018683288] [2023-11-19 04:55:32,223 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 04:55:32,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:32,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:55:32,224 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:55:32,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:55:32,287 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 04:55:32,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:55:32,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-19 04:55:32,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:55:32,429 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:55:32,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:55:32,810 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:55:32,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018683288] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:55:32,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [537391187] [2023-11-19 04:55:32,814 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2023-11-19 04:55:32,814 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:55:32,814 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:55:32,815 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:55:32,815 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:55:32,906 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:55:32,992 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '999#(and (= |ULTIMATE.start_main_~up~0#1| 1) (<= 2147483647 |ULTIMATE.start_main_~i~0#1|))' at error location [2023-11-19 04:55:32,993 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:55:32,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:55:32,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2023-11-19 04:55:32,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928327956] [2023-11-19 04:55:32,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:55:32,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-19 04:55:32,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:32,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-19 04:55:32,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=842, Unknown=0, NotChecked=0, Total=1190 [2023-11-19 04:55:33,000 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 31 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 30 states have internal predecessors, (95), 0 states have call successors, (0), 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 04:55:34,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:34,079 INFO L93 Difference]: Finished difference Result 421 states and 532 transitions. [2023-11-19 04:55:34,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-19 04:55:34,081 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 30 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-11-19 04:55:34,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:34,085 INFO L225 Difference]: With dead ends: 421 [2023-11-19 04:55:34,085 INFO L226 Difference]: Without dead ends: 394 [2023-11-19 04:55:34,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1232 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1355, Invalid=3201, Unknown=0, NotChecked=0, Total=4556 [2023-11-19 04:55:34,093 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 161 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:34,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 51 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:55:34,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-11-19 04:55:34,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 120. [2023-11-19 04:55:34,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.2016806722689075) internal successors, (143), 119 states have internal predecessors, (143), 0 states have call successors, (0), 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 04:55:34,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 143 transitions. [2023-11-19 04:55:34,130 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 143 transitions. Word has length 45 [2023-11-19 04:55:34,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:34,131 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 143 transitions. [2023-11-19 04:55:34,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 30 states have internal predecessors, (95), 0 states have call successors, (0), 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 04:55:34,132 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 143 transitions. [2023-11-19 04:55:34,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-19 04:55:34,137 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:34,137 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 1, 1] [2023-11-19 04:55:34,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:55:34,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:34,357 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 04:55:34,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:34,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1206715603, now seen corresponding path program 4 times [2023-11-19 04:55:34,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:34,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301934752] [2023-11-19 04:55:34,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:34,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:35,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 1012 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:55:35,301 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:35,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301934752] [2023-11-19 04:55:35,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301934752] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:55:35,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607371335] [2023-11-19 04:55:35,302 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 04:55:35,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:35,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:55:35,304 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:55:35,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 04:55:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:35,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-19 04:55:35,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:55:35,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 1012 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:55:35,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:55:36,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 1012 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:55:36,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607371335] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:55:36,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [137885776] [2023-11-19 04:55:36,840 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2023-11-19 04:55:36,841 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:55:36,841 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:55:36,841 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:55:36,841 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:55:36,905 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:55:37,011 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2340#(and (= |ULTIMATE.start_main_~up~0#1| 1) (<= 2147483647 |ULTIMATE.start_main_~i~0#1|))' at error location [2023-11-19 04:55:37,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:55:37,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:55:37,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 53 [2023-11-19 04:55:37,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858121675] [2023-11-19 04:55:37,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:55:37,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-11-19 04:55:37,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:37,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-11-19 04:55:37,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1236, Invalid=2186, Unknown=0, NotChecked=0, Total=3422 [2023-11-19 04:55:37,022 INFO L87 Difference]: Start difference. First operand 120 states and 143 transitions. Second operand has 55 states, 54 states have (on average 3.537037037037037) internal successors, (191), 54 states have internal predecessors, (191), 0 states have call successors, (0), 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 04:55:40,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:40,167 INFO L93 Difference]: Finished difference Result 1423 states and 1792 transitions. [2023-11-19 04:55:40,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-11-19 04:55:40,168 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 3.537037037037037) internal successors, (191), 54 states have internal predecessors, (191), 0 states have call successors, (0), 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 93 [2023-11-19 04:55:40,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:40,177 INFO L225 Difference]: With dead ends: 1423 [2023-11-19 04:55:40,177 INFO L226 Difference]: Without dead ends: 1372 [2023-11-19 04:55:40,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4346 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5405, Invalid=10851, Unknown=0, NotChecked=0, Total=16256 [2023-11-19 04:55:40,188 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 353 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:40,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 93 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 04:55:40,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2023-11-19 04:55:40,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 240. [2023-11-19 04:55:40,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.200836820083682) internal successors, (287), 239 states have internal predecessors, (287), 0 states have call successors, (0), 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 04:55:40,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 287 transitions. [2023-11-19 04:55:40,246 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 287 transitions. Word has length 93 [2023-11-19 04:55:40,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:40,247 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 287 transitions. [2023-11-19 04:55:40,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 3.537037037037037) internal successors, (191), 54 states have internal predecessors, (191), 0 states have call successors, (0), 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 04:55:40,248 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 287 transitions. [2023-11-19 04:55:40,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-19 04:55:40,251 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:40,251 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 1, 1] [2023-11-19 04:55:40,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:55:40,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:40,475 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 04:55:40,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:40,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1805508565, now seen corresponding path program 5 times [2023-11-19 04:55:40,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:40,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791991202] [2023-11-19 04:55:40,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:40,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:43,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 4324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:55:43,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:43,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791991202] [2023-11-19 04:55:43,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791991202] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:55:43,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343123544] [2023-11-19 04:55:43,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:55:43,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:43,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:55:43,634 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:55:43,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 04:55:43,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2023-11-19 04:55:43,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:55:43,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-19 04:55:43,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:55:44,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 1424 proven. 162 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2023-11-19 04:55:44,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:55:44,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 1255 proven. 956 refuted. 0 times theorem prover too weak. 2113 trivial. 0 not checked. [2023-11-19 04:55:44,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343123544] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:55:44,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [894705356] [2023-11-19 04:55:44,515 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2023-11-19 04:55:44,516 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:55:44,516 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:55:44,516 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:55:44,516 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:55:44,565 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:55:44,740 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5736#(and (= |ULTIMATE.start_main_~up~0#1| 1) (<= 2147483647 |ULTIMATE.start_main_~i~0#1|))' at error location [2023-11-19 04:55:44,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:55:44,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:55:44,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 13, 18] total 69 [2023-11-19 04:55:44,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357843296] [2023-11-19 04:55:44,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:55:44,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-11-19 04:55:44,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:44,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-11-19 04:55:44,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1991, Invalid=3411, Unknown=0, NotChecked=0, Total=5402 [2023-11-19 04:55:44,747 INFO L87 Difference]: Start difference. First operand 240 states and 287 transitions. Second operand has 70 states, 70 states have (on average 3.6714285714285713) internal successors, (257), 69 states have internal predecessors, (257), 0 states have call successors, (0), 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 04:55:45,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:45,645 INFO L93 Difference]: Finished difference Result 343 states and 414 transitions. [2023-11-19 04:55:45,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-19 04:55:45,646 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 3.6714285714285713) internal successors, (257), 69 states have internal predecessors, (257), 0 states have call successors, (0), 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 189 [2023-11-19 04:55:45,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:45,648 INFO L225 Difference]: With dead ends: 343 [2023-11-19 04:55:45,649 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 04:55:45,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2006 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3152, Invalid=5778, Unknown=0, NotChecked=0, Total=8930 [2023-11-19 04:55:45,657 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 126 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:45,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 130 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 04:55:45,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 04:55:45,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 04:55:45,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:55:45,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 04:55:45,659 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 189 [2023-11-19 04:55:45,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:45,660 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 04:55:45,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 3.6714285714285713) internal successors, (257), 69 states have internal predecessors, (257), 0 states have call successors, (0), 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 04:55:45,660 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 04:55:45,661 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 04:55:45,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-11-19 04:55:45,664 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-11-19 04:55:45,664 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2023-11-19 04:55:45,665 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2023-11-19 04:55:45,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 04:55:45,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 04:55:45,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 04:55:46,307 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2023-11-19 04:55:46,308 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 04:55:46,308 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2023-11-19 04:55:46,308 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2023-11-19 04:55:46,309 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2023-11-19 04:55:46,309 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-11-19 04:55:46,309 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-11-19 04:55:46,309 INFO L899 garLoopResultBuilder]: For program point L15-1(lines 11 23) no Hoare annotation was computed. [2023-11-19 04:55:46,310 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 04:55:46,310 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2023-11-19 04:55:46,310 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2023-11-19 04:55:46,310 INFO L895 garLoopResultBuilder]: At program point L18-1(lines 11 23) the Hoare annotation is: (or (and (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~up~0#1| 0)) (= |ULTIMATE.start_main_~i~0#1| 4) (= 9 |ULTIMATE.start_main_~i~0#1|) (= 3 |ULTIMATE.start_main_~i~0#1|) (= 5 |ULTIMATE.start_main_~i~0#1|) (= 2 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~i~0#1| 8) (= 7 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~i~0#1| 10) (and (= |ULTIMATE.start_main_~i~0#1| 1) (not (= |ULTIMATE.start_main_~up~0#1| 1))) (= 6 |ULTIMATE.start_main_~i~0#1|)) [2023-11-19 04:55:46,314 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1] [2023-11-19 04:55:46,317 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:55:46,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:55:46 BoogieIcfgContainer [2023-11-19 04:55:46,335 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:55:46,336 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:55:46,336 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:55:46,337 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:55:46,337 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:55:27" (3/4) ... [2023-11-19 04:55:46,340 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 04:55:46,350 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-19 04:55:46,350 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-19 04:55:46,350 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-19 04:55:46,462 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 04:55:46,462 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 04:55:46,463 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:55:46,463 INFO L158 Benchmark]: Toolchain (without parser) took 19315.88ms. Allocated memory was 134.2MB in the beginning and 272.6MB in the end (delta: 138.4MB). Free memory was 68.9MB in the beginning and 149.2MB in the end (delta: -80.3MB). Peak memory consumption was 60.2MB. Max. memory is 16.1GB. [2023-11-19 04:55:46,464 INFO L158 Benchmark]: CDTParser took 1.76ms. Allocated memory is still 134.2MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:55:46,464 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.77ms. Allocated memory is still 134.2MB. Free memory was 68.7MB in the beginning and 59.3MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 04:55:46,465 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.55ms. Allocated memory is still 134.2MB. Free memory was 59.3MB in the beginning and 58.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:55:46,465 INFO L158 Benchmark]: Boogie Preprocessor took 15.01ms. Allocated memory is still 134.2MB. Free memory was 58.0MB in the beginning and 56.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:55:46,466 INFO L158 Benchmark]: RCFGBuilder took 333.26ms. Allocated memory was 134.2MB in the beginning and 188.7MB in the end (delta: 54.5MB). Free memory was 56.9MB in the beginning and 152.9MB in the end (delta: -95.9MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2023-11-19 04:55:46,466 INFO L158 Benchmark]: TraceAbstraction took 18557.89ms. Allocated memory was 188.7MB in the beginning and 272.6MB in the end (delta: 83.9MB). Free memory was 151.7MB in the beginning and 153.4MB in the end (delta: -1.7MB). Peak memory consumption was 155.5MB. Max. memory is 16.1GB. [2023-11-19 04:55:46,467 INFO L158 Benchmark]: Witness Printer took 126.53ms. Allocated memory is still 272.6MB. Free memory was 153.4MB in the beginning and 149.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 04:55:46,470 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.76ms. Allocated memory is still 134.2MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 240.77ms. Allocated memory is still 134.2MB. Free memory was 68.7MB in the beginning and 59.3MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.55ms. Allocated memory is still 134.2MB. Free memory was 59.3MB in the beginning and 58.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.01ms. Allocated memory is still 134.2MB. Free memory was 58.0MB in the beginning and 56.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 333.26ms. Allocated memory was 134.2MB in the beginning and 188.7MB in the end (delta: 54.5MB). Free memory was 56.9MB in the beginning and 152.9MB in the end (delta: -95.9MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. * TraceAbstraction took 18557.89ms. Allocated memory was 188.7MB in the beginning and 272.6MB in the end (delta: 83.9MB). Free memory was 151.7MB in the beginning and 153.4MB in the end (delta: -1.7MB). Peak memory consumption was 155.5MB. Max. memory is 16.1GB. * Witness Printer took 126.53ms. Allocated memory is still 272.6MB. Free memory was 153.4MB in the beginning and 149.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 18.5s, OverallIterations: 8, TraceHistogramMax: 47, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 789 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 789 mSDsluCounter, 300 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 269 mSDsCounter, 435 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1864 IncrementalHoareTripleChecker+Invalid, 2299 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 435 mSolverCounterUnsat, 31 mSDtfsCounter, 1864 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1316 GetRequests, 957 SyntacticMatches, 0 SemanticMatches, 359 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8436 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=240occurred in iteration=7, InterpolantAutomatonStates: 276, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 1478 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 28 NumberOfFragments, 43 HoareAnnotationTreeSize, 1 FomulaSimplifications, 74553 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 1 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 728 NumberOfCodeBlocks, 696 NumberOfCodeBlocksAsserted, 56 NumberOfCheckSat, 1067 ConstructedInterpolants, 0 QuantifiedInterpolants, 2872 SizeOfPredicates, 17 NumberOfNonLiveVariables, 740 ConjunctsInSsa, 116 ConjunctsInUnsatCore, 18 InterpolantComputations, 3 PerfectInterpolantSequences, 7530/16800 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((((((((((i <= 2147483647) && (up == 0)) || (i == 4)) || (9 == i)) || (3 == i)) || (5 == i)) || (2 == i)) || (i == 8)) || (7 == i)) || (i == 10)) || ((i == 1) && !((up == 1)))) || (6 == i)) RESULT: Ultimate proved your program to be correct! [2023-11-19 04:55:46,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6694771-c71f-4c4e-a085-1cced63a076e/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE