./Ultimate.py --spec /storage/repos/svcomp/c/properties/no-overflow.prp --file /storage/repos/svcomp/c/recursive-simple/sum_non_false-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0ed9222f Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/recursive-simple/sum_non_false-no-overflow.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d40444e4cd2a33c7365a8211a19737bb4f6f43ea .................................................................................................................................................................................................................................................................................................. 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 0.1.24-0ed9222-m [2019-01-14 22:05:44,680 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 22:05:44,682 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 22:05:44,695 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 22:05:44,695 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 22:05:44,696 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 22:05:44,698 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 22:05:44,700 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 22:05:44,702 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 22:05:44,703 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 22:05:44,704 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 22:05:44,704 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 22:05:44,705 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 22:05:44,706 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 22:05:44,707 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 22:05:44,708 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 22:05:44,709 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 22:05:44,711 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 22:05:44,714 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 22:05:44,716 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 22:05:44,718 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 22:05:44,719 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 22:05:44,722 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 22:05:44,723 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 22:05:44,723 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 22:05:44,724 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 22:05:44,726 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 22:05:44,726 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 22:05:44,728 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 22:05:44,729 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 22:05:44,729 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 22:05:44,730 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 22:05:44,731 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 22:05:44,731 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 22:05:44,732 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 22:05:44,733 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 22:05:44,734 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-01-14 22:05:44,750 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 22:05:44,750 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 22:05:44,752 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 22:05:44,752 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 22:05:44,752 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 22:05:44,752 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 22:05:44,752 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 22:05:44,753 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 22:05:44,753 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 22:05:44,753 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 22:05:44,754 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 22:05:44,754 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 22:05:44,754 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 22:05:44,754 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 22:05:44,754 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2019-01-14 22:05:44,755 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 22:05:44,755 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 22:05:44,755 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 22:05:44,755 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 22:05:44,755 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 22:05:44,755 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 22:05:44,756 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 22:05:44,757 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 22:05:44,758 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 22:05:44,758 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 22:05:44,758 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 22:05:44,758 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 22:05:44,758 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 22:05:44,758 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 22:05:44,759 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> Automizer 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 -> d40444e4cd2a33c7365a8211a19737bb4f6f43ea [2019-01-14 22:05:44,796 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 22:05:44,810 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 22:05:44,814 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 22:05:44,815 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 22:05:44,816 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 22:05:44,817 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/recursive-simple/sum_non_false-no-overflow.c [2019-01-14 22:05:44,880 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbbeb4a61/f86f16887fd04a75a299be88c871d46a/FLAG092f5e83e [2019-01-14 22:05:45,292 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 22:05:45,292 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/recursive-simple/sum_non_false-no-overflow.c [2019-01-14 22:05:45,299 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbbeb4a61/f86f16887fd04a75a299be88c871d46a/FLAG092f5e83e [2019-01-14 22:05:45,711 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbbeb4a61/f86f16887fd04a75a299be88c871d46a [2019-01-14 22:05:45,714 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 22:05:45,716 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 22:05:45,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 22:05:45,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 22:05:45,722 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 22:05:45,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 10:05:45" (1/1) ... [2019-01-14 22:05:45,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da80eb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 10:05:45, skipping insertion in model container [2019-01-14 22:05:45,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 10:05:45" (1/1) ... [2019-01-14 22:05:45,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 22:05:45,753 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 22:05:45,970 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 22:05:45,976 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 22:05:45,993 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 22:05:46,009 INFO L195 MainTranslator]: Completed translation [2019-01-14 22:05:46,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 10:05:46 WrapperNode [2019-01-14 22:05:46,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 22:05:46,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 22:05:46,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 22:05:46,013 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 22:05:46,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 10:05:46" (1/1) ... [2019-01-14 22:05:46,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 10:05:46" (1/1) ... [2019-01-14 22:05:46,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 22:05:46,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 22:05:46,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 22:05:46,053 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 22:05:46,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 10:05:46" (1/1) ... [2019-01-14 22:05:46,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 10:05:46" (1/1) ... [2019-01-14 22:05:46,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 10:05:46" (1/1) ... [2019-01-14 22:05:46,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 10:05:46" (1/1) ... [2019-01-14 22:05:46,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 10:05:46" (1/1) ... [2019-01-14 22:05:46,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 10:05:46" (1/1) ... [2019-01-14 22:05:46,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 10:05:46" (1/1) ... [2019-01-14 22:05:46,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 22:05:46,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 22:05:46,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 22:05:46,076 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 22:05:46,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 10:05:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-01-14 22:05:46,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 22:05:46,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 22:05:46,212 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2019-01-14 22:05:46,212 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2019-01-14 22:05:46,757 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 22:05:46,758 INFO L286 CfgBuilder]: Removed 4 assue(true) statements. [2019-01-14 22:05:46,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 10:05:46 BoogieIcfgContainer [2019-01-14 22:05:46,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 22:05:46,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 22:05:46,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 22:05:46,764 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 22:05:46,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 10:05:45" (1/3) ... [2019-01-14 22:05:46,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c8dda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 10:05:46, skipping insertion in model container [2019-01-14 22:05:46,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 10:05:46" (2/3) ... [2019-01-14 22:05:46,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c8dda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 10:05:46, skipping insertion in model container [2019-01-14 22:05:46,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 10:05:46" (3/3) ... [2019-01-14 22:05:46,768 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_non_false-no-overflow.c [2019-01-14 22:05:46,778 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 22:05:46,787 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-01-14 22:05:46,804 INFO L257 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-01-14 22:05:46,835 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 22:05:46,836 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 22:05:46,836 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 22:05:46,837 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 22:05:46,837 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 22:05:46,837 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 22:05:46,837 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 22:05:46,838 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 22:05:46,838 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 22:05:46,858 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-01-14 22:05:46,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-01-14 22:05:46,863 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 22:05:46,864 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-01-14 22:05:46,867 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 22:05:46,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 22:05:46,874 INFO L82 PathProgramCache]: Analyzing trace with hash 30702701, now seen corresponding path program 1 times [2019-01-14 22:05:46,876 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 22:05:46,877 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 22:05:46,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 22:05:46,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 22:05:46,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 22:05:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 22:05:47,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 22:05:47,155 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 22:05:47,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-14 22:05:47,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-14 22:05:47,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-14 22:05:47,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-01-14 22:05:47,175 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 6 states. [2019-01-14 22:05:47,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 22:05:47,621 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2019-01-14 22:05:47,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-01-14 22:05:47,622 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2019-01-14 22:05:47,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 22:05:47,634 INFO L225 Difference]: With dead ends: 55 [2019-01-14 22:05:47,635 INFO L226 Difference]: Without dead ends: 46 [2019-01-14 22:05:47,638 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-01-14 22:05:47,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-01-14 22:05:47,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2019-01-14 22:05:47,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-01-14 22:05:47,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2019-01-14 22:05:47,691 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 5 [2019-01-14 22:05:47,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 22:05:47,691 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2019-01-14 22:05:47,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-14 22:05:47,692 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2019-01-14 22:05:47,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-01-14 22:05:47,692 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 22:05:47,692 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-01-14 22:05:47,693 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 22:05:47,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 22:05:47,693 INFO L82 PathProgramCache]: Analyzing trace with hash 30702861, now seen corresponding path program 1 times [2019-01-14 22:05:47,694 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 22:05:47,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 22:05:47,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 22:05:47,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 22:05:47,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 22:05:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 22:05:47,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 22:05:47,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 22:05:47,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 22:05:47,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-14 22:05:47,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-14 22:05:47,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-14 22:05:47,816 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 5 states. [2019-01-14 22:05:48,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 22:05:48,030 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2019-01-14 22:05:48,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-14 22:05:48,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-01-14 22:05:48,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 22:05:48,032 INFO L225 Difference]: With dead ends: 37 [2019-01-14 22:05:48,033 INFO L226 Difference]: Without dead ends: 36 [2019-01-14 22:05:48,034 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-01-14 22:05:48,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-01-14 22:05:48,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-01-14 22:05:48,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-01-14 22:05:48,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2019-01-14 22:05:48,042 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 5 [2019-01-14 22:05:48,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 22:05:48,042 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2019-01-14 22:05:48,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-14 22:05:48,043 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2019-01-14 22:05:48,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-01-14 22:05:48,043 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 22:05:48,044 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-01-14 22:05:48,044 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 22:05:48,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 22:05:48,045 INFO L82 PathProgramCache]: Analyzing trace with hash 951783786, now seen corresponding path program 1 times [2019-01-14 22:05:48,045 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 22:05:48,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 22:05:48,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 22:05:48,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 22:05:48,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 22:05:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 22:05:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 22:05:48,104 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 22:05:48,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 10:05:48 BoogieIcfgContainer [2019-01-14 22:05:48,125 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 22:05:48,125 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 22:05:48,126 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 22:05:48,126 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 22:05:48,127 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 10:05:46" (3/4) ... [2019-01-14 22:05:48,129 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-14 22:05:48,180 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 22:05:48,181 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 22:05:48,182 INFO L168 Benchmark]: Toolchain (without parser) took 2466.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 951.4 MB in the beginning and 1.0 GB in the end (delta: -68.4 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. [2019-01-14 22:05:48,185 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 22:05:48,187 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.56 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-14 22:05:48,188 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.75 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 22:05:48,190 INFO L168 Benchmark]: Boogie Preprocessor took 22.22 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 22:05:48,194 INFO L168 Benchmark]: RCFGBuilder took 684.10 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -127.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2019-01-14 22:05:48,197 INFO L168 Benchmark]: TraceAbstraction took 1364.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 48.8 MB). Peak memory consumption was 48.8 MB. Max. memory is 11.5 GB. [2019-01-14 22:05:48,199 INFO L168 Benchmark]: Witness Printer took 55.25 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 22:05:48,204 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 294.56 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 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 39.75 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.22 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 684.10 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -127.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1364.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 48.8 MB). Peak memory consumption was 48.8 MB. Max. memory is 11.5 GB. * Witness Printer took 55.25 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: 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)=-1, \old(n)=-2147483648] [L5] COND TRUE n <= 0 VAL [\old(m)=-1, \old(n)=-2147483648, m=-1, n=-2147483648] [L6] m + n VAL [\old(m)=-1, \old(n)=-2147483648, m=-1, n=-2147483648] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 30 locations, 8 error locations. UNSAFE Result, 1.2s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 29 SDtfs, 87 SDslu, 64 SDs, 0 SdLazy, 111 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=1, 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, 2 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 104 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...