./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.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 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ec1775bb-6231-447d-b406-d94c4e70142e/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ec1775bb-6231-447d-b406-d94c4e70142e/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ec1775bb-6231-447d-b406-d94c4e70142e/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ec1775bb-6231-447d-b406-d94c4e70142e/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_ec1775bb-6231-447d-b406-d94c4e70142e/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ec1775bb-6231-447d-b406-d94c4e70142e/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 0.1.23-635dfa2 [2018-12-02 03:26:43,057 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 03:26:43,058 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 03:26:43,064 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 03:26:43,064 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 03:26:43,065 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 03:26:43,065 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 03:26:43,066 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 03:26:43,067 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 03:26:43,068 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 03:26:43,068 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 03:26:43,068 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 03:26:43,069 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 03:26:43,069 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 03:26:43,070 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 03:26:43,070 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 03:26:43,071 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 03:26:43,072 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 03:26:43,073 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 03:26:43,074 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 03:26:43,074 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 03:26:43,075 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 03:26:43,076 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 03:26:43,076 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 03:26:43,076 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 03:26:43,077 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 03:26:43,078 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 03:26:43,078 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 03:26:43,078 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 03:26:43,079 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 03:26:43,079 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 03:26:43,080 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 03:26:43,080 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 03:26:43,080 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 03:26:43,080 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 03:26:43,081 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 03:26:43,081 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ec1775bb-6231-447d-b406-d94c4e70142e/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2018-12-02 03:26:43,088 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 03:26:43,089 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 03:26:43,089 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 03:26:43,089 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 03:26:43,089 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 03:26:43,089 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 03:26:43,090 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 03:26:43,090 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 03:26:43,090 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 03:26:43,090 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 03:26:43,090 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 03:26:43,090 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 03:26:43,090 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 03:26:43,091 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 03:26:43,091 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 03:26:43,091 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 03:26:43,091 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 03:26:43,091 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 03:26:43,091 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 03:26:43,091 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 03:26:43,091 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 03:26:43,091 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 03:26:43,091 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-02 03:26:43,091 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 03:26:43,092 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 03:26:43,092 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 03:26:43,092 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 03:26:43,092 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 03:26:43,092 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 03:26:43,092 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 03:26:43,092 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 03:26:43,092 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 03:26:43,092 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 03:26:43,092 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 03:26:43,093 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 03:26:43,093 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 03:26:43,093 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 03:26:43,093 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 03:26:43,093 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_ec1775bb-6231-447d-b406-d94c4e70142e/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 [2018-12-02 03:26:43,111 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 03:26:43,120 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 03:26:43,123 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 03:26:43,124 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 03:26:43,124 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 03:26:43,125 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ec1775bb-6231-447d-b406-d94c4e70142e/bin-2019/utaipan/../../sv-benchmarks/c/recursive-simple/sum_non_eq_false-no-overflow.c [2018-12-02 03:26:43,161 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ec1775bb-6231-447d-b406-d94c4e70142e/bin-2019/utaipan/data/9ea615857/2cb026722a254ed08366321c2fc2eec2/FLAGb20c62978 [2018-12-02 03:26:43,583 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 03:26:43,583 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ec1775bb-6231-447d-b406-d94c4e70142e/sv-benchmarks/c/recursive-simple/sum_non_eq_false-no-overflow.c [2018-12-02 03:26:43,587 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ec1775bb-6231-447d-b406-d94c4e70142e/bin-2019/utaipan/data/9ea615857/2cb026722a254ed08366321c2fc2eec2/FLAGb20c62978 [2018-12-02 03:26:43,594 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ec1775bb-6231-447d-b406-d94c4e70142e/bin-2019/utaipan/data/9ea615857/2cb026722a254ed08366321c2fc2eec2 [2018-12-02 03:26:43,596 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 03:26:43,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 03:26:43,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 03:26:43,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 03:26:43,599 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 03:26:43,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:26:43" (1/1) ... [2018-12-02 03:26:43,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59185f77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:43, skipping insertion in model container [2018-12-02 03:26:43,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:26:43" (1/1) ... [2018-12-02 03:26:43,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 03:26:43,613 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 03:26:43,693 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 03:26:43,696 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 03:26:43,704 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 03:26:43,711 INFO L195 MainTranslator]: Completed translation [2018-12-02 03:26:43,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:43 WrapperNode [2018-12-02 03:26:43,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 03:26:43,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 03:26:43,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 03:26:43,713 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 03:26:43,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:43" (1/1) ... [2018-12-02 03:26:43,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:43" (1/1) ... [2018-12-02 03:26:43,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 03:26:43,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 03:26:43,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 03:26:43,724 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 03:26:43,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:43" (1/1) ... [2018-12-02 03:26:43,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:43" (1/1) ... [2018-12-02 03:26:43,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:43" (1/1) ... [2018-12-02 03:26:43,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:43" (1/1) ... [2018-12-02 03:26:43,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:43" (1/1) ... [2018-12-02 03:26:43,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:43" (1/1) ... [2018-12-02 03:26:43,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:43" (1/1) ... [2018-12-02 03:26:43,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 03:26:43,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 03:26:43,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 03:26:43,735 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 03:26:43,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ec1775bb-6231-447d-b406-d94c4e70142e/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 [2018-12-02 03:26:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 03:26:43,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 03:26:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 03:26:43,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 03:26:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2018-12-02 03:26:43,805 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2018-12-02 03:26:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 03:26:43,806 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 03:26:43,910 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 03:26:43,911 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-02 03:26:43,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:26:43 BoogieIcfgContainer [2018-12-02 03:26:43,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 03:26:43,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 03:26:43,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 03:26:43,915 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 03:26:43,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:26:43" (1/3) ... [2018-12-02 03:26:43,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4174c467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:26:43, skipping insertion in model container [2018-12-02 03:26:43,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:43" (2/3) ... [2018-12-02 03:26:43,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4174c467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:26:43, skipping insertion in model container [2018-12-02 03:26:43,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:26:43" (3/3) ... [2018-12-02 03:26:43,918 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_non_eq_false-no-overflow.c [2018-12-02 03:26:43,924 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 03:26:43,928 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-12-02 03:26:43,940 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-12-02 03:26:43,967 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 03:26:43,967 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 03:26:43,968 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 03:26:43,968 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 03:26:43,968 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 03:26:43,968 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 03:26:43,968 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 03:26:43,968 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 03:26:43,982 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-12-02 03:26:43,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-02 03:26:43,986 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 03:26:43,987 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 03:26:43,988 INFO L423 AbstractCegarLoop]: === Iteration 1 === [sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 03:26:43,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 03:26:43,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1254833423, now seen corresponding path program 1 times [2018-12-02 03:26:43,994 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 03:26:44,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:26:44,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 03:26:44,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:26:44,027 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 03:26:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 03:26:44,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 03:26:44,096 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 03:26:44,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 03:26:44,096 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 03:26:44,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 03:26:44,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 03:26:44,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-02 03:26:44,109 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2018-12-02 03:26:44,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 03:26:44,166 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2018-12-02 03:26:44,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 03:26:44,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-12-02 03:26:44,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 03:26:44,172 INFO L225 Difference]: With dead ends: 35 [2018-12-02 03:26:44,172 INFO L226 Difference]: Without dead ends: 24 [2018-12-02 03:26:44,174 INFO L631 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 [2018-12-02 03:26:44,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-12-02 03:26:44,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-12-02 03:26:44,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-02 03:26:44,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-12-02 03:26:44,197 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 9 [2018-12-02 03:26:44,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 03:26:44,198 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-12-02 03:26:44,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 03:26:44,198 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-12-02 03:26:44,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 03:26:44,198 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 03:26:44,199 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 03:26:44,199 INFO L423 AbstractCegarLoop]: === Iteration 2 === [sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 03:26:44,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 03:26:44,199 INFO L82 PathProgramCache]: Analyzing trace with hash -245130407, now seen corresponding path program 1 times [2018-12-02 03:26:44,199 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 03:26:44,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:26:44,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 03:26:44,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:26:44,200 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 03:26:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 03:26:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 03:26:44,218 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 03:26:44,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:26:44 BoogieIcfgContainer [2018-12-02 03:26:44,232 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 03:26:44,232 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 03:26:44,232 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 03:26:44,232 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 03:26:44,233 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:26:43" (3/4) ... [2018-12-02 03:26:44,234 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-02 03:26:44,255 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ec1775bb-6231-447d-b406-d94c4e70142e/bin-2019/utaipan/witness.graphml [2018-12-02 03:26:44,255 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 03:26:44,256 INFO L168 Benchmark]: Toolchain (without parser) took 659.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 957.8 MB in the beginning and 1.1 GB in the end (delta: -112.0 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. [2018-12-02 03:26:44,257 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 03:26:44,257 INFO L168 Benchmark]: CACSL2BoogieTranslator took 114.72 ms. Allocated memory is still 1.0 GB. Free memory was 957.8 MB in the beginning and 947.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 03:26:44,257 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.80 ms. Allocated memory is still 1.0 GB. Free memory is still 947.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 03:26:44,257 INFO L168 Benchmark]: Boogie Preprocessor took 10.27 ms. Allocated memory is still 1.0 GB. Free memory is still 947.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 03:26:44,258 INFO L168 Benchmark]: RCFGBuilder took 176.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -167.0 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-12-02 03:26:44,258 INFO L168 Benchmark]: TraceAbstraction took 320.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 37.4 MB). Peak memory consumption was 37.4 MB. Max. memory is 11.5 GB. [2018-12-02 03:26:44,258 INFO L168 Benchmark]: Witness Printer took 23.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-02 03:26:44,260 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 114.72 ms. Allocated memory is still 1.0 GB. Free memory was 957.8 MB in the beginning and 947.0 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 11.80 ms. Allocated memory is still 1.0 GB. Free memory is still 947.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.27 ms. Allocated memory is still 1.0 GB. Free memory is still 947.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 176.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -167.0 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 320.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 37.4 MB). Peak memory consumption was 37.4 MB. Max. memory is 11.5 GB. * Witness Printer took 23.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. 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, 0.2s 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...