./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/sum_non_eq-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0b958e81-3200-43c0-ad5c-08a7403e181d/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0b958e81-3200-43c0-ad5c-08a7403e181d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0b958e81-3200-43c0-ad5c-08a7403e181d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0b958e81-3200-43c0-ad5c-08a7403e181d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_non_eq-1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0b958e81-3200-43c0-ad5c-08a7403e181d/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0b958e81-3200-43c0-ad5c-08a7403e181d/bin/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 0.1.24-cad4683 [2019-10-22 11:21:37,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:21:37,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:21:37,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:21:37,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:21:37,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:21:37,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:21:37,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:21:37,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:21:37,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:21:37,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:21:37,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:21:37,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:21:37,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:21:37,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:21:37,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:21:37,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:21:37,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:21:37,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:21:37,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:21:37,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:21:37,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:21:37,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:21:37,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:21:37,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:21:37,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:21:37,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:21:37,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:21:37,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:21:37,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:21:37,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:21:37,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:21:37,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:21:37,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:21:37,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:21:37,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:21:37,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:21:37,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:21:37,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:21:37,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:21:37,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:21:37,100 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0b958e81-3200-43c0-ad5c-08a7403e181d/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2019-10-22 11:21:37,110 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:21:37,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:21:37,111 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:21:37,111 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:21:37,111 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:21:37,112 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:21:37,112 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:21:37,112 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:21:37,112 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:21:37,112 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:21:37,112 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:21:37,113 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:21:37,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:21:37,113 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:21:37,114 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 11:21:37,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:21:37,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:21:37,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:21:37,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:21:37,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:21:37,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:21:37,115 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-10-22 11:21:37,115 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:21:37,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:21:37,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:21:37,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:21:37,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:21:37,116 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:21:37,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:21:37,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:37,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:21:37,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:21:37,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:21:37,117 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:21:37,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:21:37,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:21:37,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:21:37,118 INFO L138 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_0b958e81-3200-43c0-ad5c-08a7403e181d/bin/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 [2019-10-22 11:21:37,143 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:21:37,153 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:21:37,156 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:21:37,157 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:21:37,157 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:21:37,158 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0b958e81-3200-43c0-ad5c-08a7403e181d/bin/utaipan/../../sv-benchmarks/c/recursive-simple/sum_non_eq-1.c [2019-10-22 11:21:37,204 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0b958e81-3200-43c0-ad5c-08a7403e181d/bin/utaipan/data/a46ae1303/06e3ff4d10144c1c8c22cf0464269b22/FLAGba7ab706f [2019-10-22 11:21:37,625 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:21:37,627 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0b958e81-3200-43c0-ad5c-08a7403e181d/sv-benchmarks/c/recursive-simple/sum_non_eq-1.c [2019-10-22 11:21:37,633 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0b958e81-3200-43c0-ad5c-08a7403e181d/bin/utaipan/data/a46ae1303/06e3ff4d10144c1c8c22cf0464269b22/FLAGba7ab706f [2019-10-22 11:21:38,008 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0b958e81-3200-43c0-ad5c-08a7403e181d/bin/utaipan/data/a46ae1303/06e3ff4d10144c1c8c22cf0464269b22 [2019-10-22 11:21:38,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:21:38,012 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:21:38,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:38,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:21:38,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:21:38,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:38" (1/1) ... [2019-10-22 11:21:38,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59525fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:38, skipping insertion in model container [2019-10-22 11:21:38,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:38" (1/1) ... [2019-10-22 11:21:38,027 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:21:38,041 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:21:38,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:38,178 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:21:38,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:38,268 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:21:38,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:38 WrapperNode [2019-10-22 11:21:38,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:38,269 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:38,269 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:21:38,269 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:21:38,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:38" (1/1) ... [2019-10-22 11:21:38,283 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:38" (1/1) ... [2019-10-22 11:21:38,307 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:38,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:21:38,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:21:38,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:21:38,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:38" (1/1) ... [2019-10-22 11:21:38,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:38" (1/1) ... [2019-10-22 11:21:38,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:38" (1/1) ... [2019-10-22 11:21:38,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:38" (1/1) ... [2019-10-22 11:21:38,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:38" (1/1) ... [2019-10-22 11:21:38,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:38" (1/1) ... [2019-10-22 11:21:38,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:38" (1/1) ... [2019-10-22 11:21:38,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:21:38,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:21:38,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:21:38,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:21:38,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0b958e81-3200-43c0-ad5c-08a7403e181d/bin/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 [2019-10-22 11:21:38,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:21:38,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:21:38,407 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2019-10-22 11:21:38,407 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2019-10-22 11:21:38,585 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:21:38,585 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 11:21:38,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:38 BoogieIcfgContainer [2019-10-22 11:21:38,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:21:38,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:21:38,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:21:38,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:21:38,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:21:38" (1/3) ... [2019-10-22 11:21:38,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296aaa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:38, skipping insertion in model container [2019-10-22 11:21:38,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:38" (2/3) ... [2019-10-22 11:21:38,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296aaa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:38, skipping insertion in model container [2019-10-22 11:21:38,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:38" (3/3) ... [2019-10-22 11:21:38,606 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_non_eq-1.c [2019-10-22 11:21:38,627 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:21:38,634 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-10-22 11:21:38,645 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-10-22 11:21:38,684 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:21:38,684 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:21:38,685 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:21:38,685 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:21:38,698 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:21:38,698 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:21:38,698 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:21:38,698 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:21:38,735 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-10-22 11:21:38,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:21:38,749 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:38,750 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:21:38,752 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:21:38,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:38,759 INFO L82 PathProgramCache]: Analyzing trace with hash 30583569, now seen corresponding path program 1 times [2019-10-22 11:21:38,770 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:38,770 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373320792] [2019-10-22 11:21:38,771 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:38,771 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:38,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:38,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:38,939 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373320792] [2019-10-22 11:21:38,940 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:38,941 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:21:38,941 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301461135] [2019-10-22 11:21:38,945 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:21:38,947 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:38,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:21:38,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:21:38,964 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 5 states. [2019-10-22 11:21:39,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:39,060 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2019-10-22 11:21:39,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:21:39,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-10-22 11:21:39,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:39,071 INFO L225 Difference]: With dead ends: 29 [2019-10-22 11:21:39,072 INFO L226 Difference]: Without dead ends: 20 [2019-10-22 11:21:39,075 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:21:39,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-22 11:21:39,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-22 11:21:39,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-22 11:21:39,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-10-22 11:21:39,118 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 5 [2019-10-22 11:21:39,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:39,119 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-10-22 11:21:39,119 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:21:39,119 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-10-22 11:21:39,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:21:39,120 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:39,120 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:21:39,121 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:21:39,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:39,121 INFO L82 PathProgramCache]: Analyzing trace with hash 948090695, now seen corresponding path program 1 times [2019-10-22 11:21:39,122 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:39,122 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132229558] [2019-10-22 11:21:39,122 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:39,122 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:39,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:21:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:21:39,162 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:21:39,162 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:21:39,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:21:39 BoogieIcfgContainer [2019-10-22 11:21:39,184 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:21:39,184 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:21:39,184 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:21:39,185 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:21:39,185 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:38" (3/4) ... [2019-10-22 11:21:39,188 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:21:39,223 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0b958e81-3200-43c0-ad5c-08a7403e181d/bin/utaipan/witness.graphml [2019-10-22 11:21:39,223 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:21:39,225 INFO L168 Benchmark]: Toolchain (without parser) took 1212.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -134.9 MB). Peak memory consumption was 319.4 kB. Max. memory is 11.5 GB. [2019-10-22 11:21:39,226 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:39,227 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -186.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:39,227 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.99 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. [2019-10-22 11:21:39,227 INFO L168 Benchmark]: Boogie Preprocessor took 17.37 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. [2019-10-22 11:21:39,228 INFO L168 Benchmark]: RCFGBuilder took 261.63 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:39,228 INFO L168 Benchmark]: TraceAbstraction took 596.86 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: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:39,229 INFO L168 Benchmark]: Witness Printer took 39.18 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. [2019-10-22 11:21:39,231 INFO L335 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 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 255.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -186.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.99 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. * Boogie Preprocessor took 17.37 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. * RCFGBuilder took 261.63 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 596.86 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: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Witness Printer took 39.18 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 2 procedures, 26 locations, 6 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 31 SDslu, 16 SDs, 0 SdLazy, 37 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...