./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Pure2Phase-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a40604a-4b3a-434a-b03a-4ca14a76b9c1/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a40604a-4b3a-434a-b03a-4ca14a76b9c1/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a40604a-4b3a-434a-b03a-4ca14a76b9c1/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a40604a-4b3a-434a-b03a-4ca14a76b9c1/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Pure2Phase-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a40604a-4b3a-434a-b03a-4ca14a76b9c1/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a40604a-4b3a-434a-b03a-4ca14a76b9c1/bin/utaipan-verify-YMUCfTKeje --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 7116348637d73c805221918ccbc53fd6945d0142c70740c3d9fbedf1532fde74 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:13:34,609 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:13:34,708 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a40604a-4b3a-434a-b03a-4ca14a76b9c1/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-64bit-Taipan_Default.epf [2024-11-09 07:13:34,714 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:13:34,714 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:13:34,765 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:13:34,766 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:13:34,766 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:13:34,767 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:13:34,767 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:13:34,768 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:13:34,768 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:13:34,768 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:13:34,769 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:13:34,771 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:13:34,772 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:13:34,772 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:13:34,772 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:13:34,773 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:13:34,773 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:13:34,773 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:13:34,777 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:13:34,778 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:13:34,778 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:13:34,779 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:13:34,779 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:13:34,779 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:13:34,780 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:13:34,780 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:13:34,780 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:13:34,794 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 07:13:34,794 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 07:13:34,795 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:13:34,795 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:13:34,796 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:13:34,796 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:13:34,796 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:13:34,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:13:34,797 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:13:34,797 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:13:34,797 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:13:34,798 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:13:34,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:13:34,798 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:13:34,799 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:13:34,799 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:13:34,799 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_8a40604a-4b3a-434a-b03a-4ca14a76b9c1/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a40604a-4b3a-434a-b03a-4ca14a76b9c1/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7116348637d73c805221918ccbc53fd6945d0142c70740c3d9fbedf1532fde74 [2024-11-09 07:13:35,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:13:35,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:13:35,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:13:35,156 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:13:35,158 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:13:35,159 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a40604a-4b3a-434a-b03a-4ca14a76b9c1/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/termination-crafted/Pure2Phase-2.c Unable to find full path for "g++" [2024-11-09 07:13:37,118 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:13:37,298 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:13:37,298 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a40604a-4b3a-434a-b03a-4ca14a76b9c1/sv-benchmarks/c/termination-crafted/Pure2Phase-2.c [2024-11-09 07:13:37,306 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a40604a-4b3a-434a-b03a-4ca14a76b9c1/bin/utaipan-verify-YMUCfTKeje/data/d49f279f3/f0a508d3ee394cd7812aad06402bb702/FLAG7483592e4 [2024-11-09 07:13:37,701 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a40604a-4b3a-434a-b03a-4ca14a76b9c1/bin/utaipan-verify-YMUCfTKeje/data/d49f279f3/f0a508d3ee394cd7812aad06402bb702 [2024-11-09 07:13:37,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:13:37,705 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:13:37,707 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:13:37,707 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:13:37,721 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:13:37,722 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:13:37" (1/1) ... [2024-11-09 07:13:37,723 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23a66844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:37, skipping insertion in model container [2024-11-09 07:13:37,723 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:13:37" (1/1) ... [2024-11-09 07:13:37,763 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:13:37,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:13:37,990 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:13:38,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:13:38,014 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:13:38,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:38 WrapperNode [2024-11-09 07:13:38,015 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:13:38,016 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:13:38,016 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:13:38,016 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:13:38,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:38" (1/1) ... [2024-11-09 07:13:38,026 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:38" (1/1) ... [2024-11-09 07:13:38,043 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 28 [2024-11-09 07:13:38,044 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:13:38,045 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:13:38,045 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:13:38,045 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:13:38,054 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:38" (1/1) ... [2024-11-09 07:13:38,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:38" (1/1) ... [2024-11-09 07:13:38,055 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:38" (1/1) ... [2024-11-09 07:13:38,055 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:38" (1/1) ... [2024-11-09 07:13:38,057 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:38" (1/1) ... [2024-11-09 07:13:38,062 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:38" (1/1) ... [2024-11-09 07:13:38,067 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:38" (1/1) ... [2024-11-09 07:13:38,068 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:38" (1/1) ... [2024-11-09 07:13:38,069 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:13:38,070 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:13:38,070 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:13:38,070 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:13:38,073 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:38" (1/1) ... [2024-11-09 07:13:38,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:13:38,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a40604a-4b3a-434a-b03a-4ca14a76b9c1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:13:38,109 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a40604a-4b3a-434a-b03a-4ca14a76b9c1/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:13:38,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a40604a-4b3a-434a-b03a-4ca14a76b9c1/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:13:38,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:13:38,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:13:38,215 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:13:38,216 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:13:38,299 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-09 07:13:38,299 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:13:38,326 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:13:38,327 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 07:13:38,327 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:13:38 BoogieIcfgContainer [2024-11-09 07:13:38,327 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:13:38,330 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:13:38,331 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:13:38,334 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:13:38,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:13:37" (1/3) ... [2024-11-09 07:13:38,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7999a09b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:13:38, skipping insertion in model container [2024-11-09 07:13:38,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:38" (2/3) ... [2024-11-09 07:13:38,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7999a09b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:13:38, skipping insertion in model container [2024-11-09 07:13:38,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:13:38" (3/3) ... [2024-11-09 07:13:38,337 INFO L112 eAbstractionObserver]: Analyzing ICFG Pure2Phase-2.c [2024-11-09 07:13:38,352 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:13:38,353 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-09 07:13:38,407 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:13:38,414 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4400411f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:13:38,414 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 07:13:38,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:13:38,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 07:13:38,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:38,423 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 07:13:38,424 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-09 07:13:38,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:38,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1942534, now seen corresponding path program 1 times [2024-11-09 07:13:38,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:13:38,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163570461] [2024-11-09 07:13:38,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:38,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:13:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 07:13:38,519 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 07:13:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 07:13:38,541 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 07:13:38,543 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 07:13:38,545 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2024-11-09 07:13:38,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2024-11-09 07:13:38,548 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2024-11-09 07:13:38,548 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2024-11-09 07:13:38,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:13:38,552 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-09 07:13:38,568 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 07:13:38,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 07:13:38 BoogieIcfgContainer [2024-11-09 07:13:38,572 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 07:13:38,573 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 07:13:38,573 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 07:13:38,573 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 07:13:38,574 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:13:38" (3/4) ... [2024-11-09 07:13:38,575 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-09 07:13:38,623 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a40604a-4b3a-434a-b03a-4ca14a76b9c1/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 07:13:38,625 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 07:13:38,627 INFO L158 Benchmark]: Toolchain (without parser) took 920.93ms. Allocated memory was 132.1MB in the beginning and 195.0MB in the end (delta: 62.9MB). Free memory was 68.6MB in the beginning and 127.9MB in the end (delta: -59.3MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2024-11-09 07:13:38,627 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 132.1MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 07:13:38,630 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.54ms. Allocated memory was 132.1MB in the beginning and 195.0MB in the end (delta: 62.9MB). Free memory was 68.3MB in the beginning and 155.8MB in the end (delta: -87.6MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2024-11-09 07:13:38,635 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.40ms. Allocated memory is still 195.0MB. Free memory was 155.8MB in the beginning and 154.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 07:13:38,636 INFO L158 Benchmark]: Boogie Preprocessor took 24.24ms. Allocated memory is still 195.0MB. Free memory was 154.5MB in the beginning and 153.6MB in the end (delta: 829.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 07:13:38,636 INFO L158 Benchmark]: RCFGBuilder took 257.97ms. Allocated memory is still 195.0MB. Free memory was 153.6MB in the beginning and 143.3MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-09 07:13:38,637 INFO L158 Benchmark]: TraceAbstraction took 241.99ms. Allocated memory is still 195.0MB. Free memory was 142.6MB in the beginning and 130.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 07:13:38,638 INFO L158 Benchmark]: Witness Printer took 51.88ms. Allocated memory is still 195.0MB. Free memory was 130.0MB in the beginning and 127.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 07:13:38,642 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 132.1MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 308.54ms. Allocated memory was 132.1MB in the beginning and 195.0MB in the end (delta: 62.9MB). Free memory was 68.3MB in the beginning and 155.8MB in the end (delta: -87.6MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.40ms. Allocated memory is still 195.0MB. Free memory was 155.8MB in the beginning and 154.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.24ms. Allocated memory is still 195.0MB. Free memory was 154.5MB in the beginning and 153.6MB in the end (delta: 829.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 257.97ms. Allocated memory is still 195.0MB. Free memory was 153.6MB in the beginning and 143.3MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 241.99ms. Allocated memory is still 195.0MB. Free memory was 142.6MB in the beginning and 130.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 51.88ms. Allocated memory is still 195.0MB. Free memory was 130.0MB in the beginning and 127.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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 - CounterExampleResult [Line: 20]: integer overflow possible integer overflow possible We found a FailurePath: [L16] int y, z; [L17] y = __VERIFIER_nondet_int() [L18] z = __VERIFIER_nondet_int() [L19] COND FALSE !(z >= 0) VAL [y=-2147483648, z=0] [L19] COND TRUE z >= 0 VAL [y=-2147483648, z=0] [L20] y - 1 VAL [z=0] - UnprovableResult [Line: 20]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be incorrect! [2024-11-09 07:13:38,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a40604a-4b3a-434a-b03a-4ca14a76b9c1/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)