./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/recursive-simple/sum_non_eq_false-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3d20e033-9b02-42f1-8540-532e9b6cf3e7/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3d20e033-9b02-42f1-8540-532e9b6cf3e7/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3d20e033-9b02-42f1-8540-532e9b6cf3e7/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3d20e033-9b02-42f1-8540-532e9b6cf3e7/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_non_eq_false-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3d20e033-9b02-42f1-8540-532e9b6cf3e7/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3d20e033-9b02-42f1-8540-532e9b6cf3e7/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c3f4ddad1399519940e721d52a976bc45ffd3619 ................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 13:12:15,838 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 13:12:15,839 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 13:12:15,847 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 13:12:15,847 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 13:12:15,847 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 13:12:15,848 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 13:12:15,849 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 13:12:15,850 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 13:12:15,851 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 13:12:15,851 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 13:12:15,851 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 13:12:15,852 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 13:12:15,853 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 13:12:15,853 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 13:12:15,854 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 13:12:15,855 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 13:12:15,856 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 13:12:15,857 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 13:12:15,858 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 13:12:15,859 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 13:12:15,859 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 13:12:15,861 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 13:12:15,861 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 13:12:15,862 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 13:12:15,862 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 13:12:15,863 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 13:12:15,863 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 13:12:15,864 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 13:12:15,865 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 13:12:15,865 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 13:12:15,865 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 13:12:15,865 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 13:12:15,866 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 13:12:15,866 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 13:12:15,867 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 13:12:15,867 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3d20e033-9b02-42f1-8540-532e9b6cf3e7/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2018-11-10 13:12:15,877 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 13:12:15,877 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 13:12:15,878 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 13:12:15,878 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 13:12:15,878 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 13:12:15,878 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 13:12:15,878 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 13:12:15,878 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 13:12:15,879 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 13:12:15,879 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 13:12:15,879 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 13:12:15,879 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 13:12:15,879 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 13:12:15,880 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 13:12:15,880 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 13:12:15,880 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 13:12:15,880 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 13:12:15,880 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 13:12:15,880 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 13:12:15,880 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 13:12:15,880 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-10 13:12:15,881 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 13:12:15,881 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 13:12:15,881 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 13:12:15,881 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 13:12:15,881 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 13:12:15,881 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 13:12:15,881 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 13:12:15,881 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 13:12:15,881 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 13:12:15,881 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 13:12:15,881 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 13:12:15,882 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 13:12:15,882 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 13:12:15,882 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 13:12:15,882 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 13:12:15,882 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_3d20e033-9b02-42f1-8540-532e9b6cf3e7/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3f4ddad1399519940e721d52a976bc45ffd3619 [2018-11-10 13:12:15,905 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 13:12:15,913 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 13:12:15,915 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 13:12:15,916 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 13:12:15,916 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 13:12:15,916 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3d20e033-9b02-42f1-8540-532e9b6cf3e7/bin-2019/utaipan/../../sv-benchmarks/c/recursive-simple/sum_non_eq_false-no-overflow.c [2018-11-10 13:12:15,952 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3d20e033-9b02-42f1-8540-532e9b6cf3e7/bin-2019/utaipan/data/e48ae1435/91a69454ebec4c768f6634e10da0ca8e/FLAG3d9b374b8 [2018-11-10 13:12:16,342 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 13:12:16,343 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3d20e033-9b02-42f1-8540-532e9b6cf3e7/sv-benchmarks/c/recursive-simple/sum_non_eq_false-no-overflow.c [2018-11-10 13:12:16,346 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3d20e033-9b02-42f1-8540-532e9b6cf3e7/bin-2019/utaipan/data/e48ae1435/91a69454ebec4c768f6634e10da0ca8e/FLAG3d9b374b8 [2018-11-10 13:12:16,354 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3d20e033-9b02-42f1-8540-532e9b6cf3e7/bin-2019/utaipan/data/e48ae1435/91a69454ebec4c768f6634e10da0ca8e [2018-11-10 13:12:16,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 13:12:16,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 13:12:16,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 13:12:16,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 13:12:16,360 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 13:12:16,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:12:16" (1/1) ... [2018-11-10 13:12:16,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44d995a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:12:16, skipping insertion in model container [2018-11-10 13:12:16,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:12:16" (1/1) ... [2018-11-10 13:12:16,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 13:12:16,378 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 13:12:16,472 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 13:12:16,474 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 13:12:16,482 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 13:12:16,490 INFO L193 MainTranslator]: Completed translation [2018-11-10 13:12:16,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:12:16 WrapperNode [2018-11-10 13:12:16,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 13:12:16,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 13:12:16,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 13:12:16,491 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 13:12:16,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:12:16" (1/1) ... [2018-11-10 13:12:16,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:12:16" (1/1) ... [2018-11-10 13:12:16,504 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 13:12:16,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 13:12:16,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 13:12:16,504 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 13:12:16,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:12:16" (1/1) ... [2018-11-10 13:12:16,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:12:16" (1/1) ... [2018-11-10 13:12:16,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:12:16" (1/1) ... [2018-11-10 13:12:16,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:12:16" (1/1) ... [2018-11-10 13:12:16,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:12:16" (1/1) ... [2018-11-10 13:12:16,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:12:16" (1/1) ... [2018-11-10 13:12:16,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:12:16" (1/1) ... [2018-11-10 13:12:16,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 13:12:16,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 13:12:16,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 13:12:16,515 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 13:12:16,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:12:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d20e033-9b02-42f1-8540-532e9b6cf3e7/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 13:12:16,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 13:12:16,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 13:12:16,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 13:12:16,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 13:12:16,600 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 13:12:16,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 13:12:16,600 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2018-11-10 13:12:16,601 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2018-11-10 13:12:16,712 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 13:12:16,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:12:16 BoogieIcfgContainer [2018-11-10 13:12:16,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 13:12:16,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 13:12:16,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 13:12:16,716 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 13:12:16,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 01:12:16" (1/3) ... [2018-11-10 13:12:16,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b70ce33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:12:16, skipping insertion in model container [2018-11-10 13:12:16,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:12:16" (2/3) ... [2018-11-10 13:12:16,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b70ce33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:12:16, skipping insertion in model container [2018-11-10 13:12:16,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:12:16" (3/3) ... [2018-11-10 13:12:16,719 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_non_eq_false-no-overflow.c [2018-11-10 13:12:16,727 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 13:12:16,734 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-10 13:12:16,747 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-10 13:12:16,772 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 13:12:16,772 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 13:12:16,772 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 13:12:16,773 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 13:12:16,773 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 13:12:16,773 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 13:12:16,773 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 13:12:16,773 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 13:12:16,787 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-11-10 13:12:16,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-10 13:12:16,792 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:12:16,793 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 13:12:16,794 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 13:12:16,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:12:16,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1269653453, now seen corresponding path program 1 times [2018-11-10 13:12:16,801 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 13:12:16,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:12:16,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:12:16,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:12:16,834 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 13:12:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:12:16,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 13:12:16,932 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 13:12:16,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 13:12:16,933 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 13:12:16,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 13:12:16,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 13:12:16,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 13:12:16,945 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2018-11-10 13:12:17,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:12:17,021 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2018-11-10 13:12:17,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 13:12:17,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-11-10 13:12:17,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:12:17,028 INFO L225 Difference]: With dead ends: 35 [2018-11-10 13:12:17,028 INFO L226 Difference]: Without dead ends: 24 [2018-11-10 13:12:17,030 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 13:12:17,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-10 13:12:17,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-10 13:12:17,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-10 13:12:17,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-11-10 13:12:17,059 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 9 [2018-11-10 13:12:17,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:12:17,060 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-11-10 13:12:17,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 13:12:17,060 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-11-10 13:12:17,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 13:12:17,061 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:12:17,061 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 13:12:17,062 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 13:12:17,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:12:17,062 INFO L82 PathProgramCache]: Analyzing trace with hash -704551321, now seen corresponding path program 1 times [2018-11-10 13:12:17,062 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 13:12:17,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:12:17,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:12:17,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:12:17,063 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 13:12:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 13:12:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 13:12:17,085 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 13:12:17,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 01:12:17 BoogieIcfgContainer [2018-11-10 13:12:17,100 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 13:12:17,100 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 13:12:17,101 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 13:12:17,101 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 13:12:17,101 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:12:16" (3/4) ... [2018-11-10 13:12:17,102 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 13:12:17,124 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3d20e033-9b02-42f1-8540-532e9b6cf3e7/bin-2019/utaipan/witness.graphml [2018-11-10 13:12:17,125 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 13:12:17,125 INFO L168 Benchmark]: Toolchain (without parser) took 768.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -151.8 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2018-11-10 13:12:17,126 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 13:12:17,126 INFO L168 Benchmark]: CACSL2BoogieTranslator took 133.17 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 13:12:17,127 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.80 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 13:12:17,127 INFO L168 Benchmark]: Boogie Preprocessor took 10.61 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 13:12:17,127 INFO L168 Benchmark]: RCFGBuilder took 198.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 949.6 MB in the beginning and 1.2 GB in the end (delta: -201.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2018-11-10 13:12:17,128 INFO L168 Benchmark]: TraceAbstraction took 386.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 38.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 11.5 GB. [2018-11-10 13:12:17,128 INFO L168 Benchmark]: Witness Printer took 24.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 13:12:17,130 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 133.17 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.80 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.61 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 198.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 949.6 MB in the beginning and 1.2 GB in the end (delta: -201.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 386.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 38.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 11.5 GB. * Witness Printer took 24.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: integer overflow possible integer overflow possible We found a FailurePath: [L13] int a = __VERIFIER_nondet_int() ; [L14] int b = __VERIFIER_nondet_int(); [L15] CALL sum(a, b) VAL [\old(m)=0, \old(n)=-2147483648] [L5] COND FALSE !(n == 0) VAL [\old(m)=0, \old(n)=-2147483648, m=0, n=-2147483648] [L8] n - 1 VAL [\old(m)=0, \old(n)=-2147483648, m=0, n=-2147483648] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 6 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17 SDtfs, 30 SDslu, 32 SDs, 0 SdLazy, 37 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 128 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...