./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/recursive-simple/sum_non_eq_false-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_9b569e07-2953-47bb-b922-4603ac1189d5/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9b569e07-2953-47bb-b922-4603ac1189d5/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9b569e07-2953-47bb-b922-4603ac1189d5/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9b569e07-2953-47bb-b922-4603ac1189d5/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_9b569e07-2953-47bb-b922-4603ac1189d5/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9b569e07-2953-47bb-b922-4603ac1189d5/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 0.1.23-5842f4b [2018-11-18 16:08:32,601 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:08:32,602 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:08:32,608 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:08:32,608 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:08:32,609 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:08:32,609 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:08:32,610 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:08:32,611 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:08:32,611 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:08:32,611 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:08:32,612 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:08:32,612 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:08:32,613 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:08:32,613 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:08:32,613 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:08:32,614 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:08:32,615 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:08:32,616 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:08:32,616 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:08:32,617 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:08:32,618 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:08:32,619 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:08:32,619 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:08:32,619 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:08:32,620 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:08:32,620 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:08:32,620 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:08:32,621 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:08:32,622 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:08:32,622 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:08:32,622 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:08:32,622 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:08:32,622 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:08:32,623 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:08:32,623 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:08:32,623 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9b569e07-2953-47bb-b922-4603ac1189d5/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2018-11-18 16:08:32,631 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:08:32,631 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:08:32,632 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:08:32,632 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 16:08:32,632 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 16:08:32,632 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 16:08:32,632 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 16:08:32,632 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 16:08:32,633 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 16:08:32,633 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 16:08:32,633 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 16:08:32,633 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 16:08:32,633 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 16:08:32,634 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:08:32,634 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:08:32,634 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 16:08:32,634 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:08:32,634 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:08:32,634 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:08:32,634 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:08:32,634 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:08:32,635 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:08:32,635 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 16:08:32,635 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:08:32,635 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:08:32,635 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:08:32,635 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:08:32,635 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:08:32,635 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:08:32,636 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:08:32,636 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:08:32,636 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:08:32,636 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:08:32,636 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:08:32,636 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:08:32,636 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 16:08:32,636 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:08:32,636 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 16:08:32,637 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 16:08:32,637 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_9b569e07-2953-47bb-b922-4603ac1189d5/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3f4ddad1399519940e721d52a976bc45ffd3619 [2018-11-18 16:08:32,661 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:08:32,670 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:08:32,672 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:08:32,673 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:08:32,674 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:08:32,674 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9b569e07-2953-47bb-b922-4603ac1189d5/bin-2019/utaipan/../../sv-benchmarks/c/recursive-simple/sum_non_eq_false-no-overflow.c [2018-11-18 16:08:32,713 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9b569e07-2953-47bb-b922-4603ac1189d5/bin-2019/utaipan/data/f25d57190/e5c9f69fad1b4561a945835e2cd58cb3/FLAG84cc71ad0 [2018-11-18 16:08:33,017 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:08:33,018 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9b569e07-2953-47bb-b922-4603ac1189d5/sv-benchmarks/c/recursive-simple/sum_non_eq_false-no-overflow.c [2018-11-18 16:08:33,021 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9b569e07-2953-47bb-b922-4603ac1189d5/bin-2019/utaipan/data/f25d57190/e5c9f69fad1b4561a945835e2cd58cb3/FLAG84cc71ad0 [2018-11-18 16:08:33,033 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9b569e07-2953-47bb-b922-4603ac1189d5/bin-2019/utaipan/data/f25d57190/e5c9f69fad1b4561a945835e2cd58cb3 [2018-11-18 16:08:33,036 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:08:33,037 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:08:33,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:08:33,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:08:33,042 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:08:33,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:08:33" (1/1) ... [2018-11-18 16:08:33,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32bce7a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:08:33, skipping insertion in model container [2018-11-18 16:08:33,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:08:33" (1/1) ... [2018-11-18 16:08:33,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:08:33,066 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:08:33,182 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:08:33,184 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:08:33,193 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:08:33,201 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:08:33,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:08:33 WrapperNode [2018-11-18 16:08:33,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:08:33,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:08:33,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:08:33,202 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:08:33,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:08:33" (1/1) ... [2018-11-18 16:08:33,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:08:33" (1/1) ... [2018-11-18 16:08:33,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:08:33,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:08:33,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:08:33,214 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:08:33,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:08:33" (1/1) ... [2018-11-18 16:08:33,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:08:33" (1/1) ... [2018-11-18 16:08:33,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:08:33" (1/1) ... [2018-11-18 16:08:33,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:08:33" (1/1) ... [2018-11-18 16:08:33,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:08:33" (1/1) ... [2018-11-18 16:08:33,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:08:33" (1/1) ... [2018-11-18 16:08:33,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:08:33" (1/1) ... [2018-11-18 16:08:33,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:08:33,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:08:33,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:08:33,224 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:08:33,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:08:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9b569e07-2953-47bb-b922-4603ac1189d5/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:08:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:08:33,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:08:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:08:33,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:08:33,298 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2018-11-18 16:08:33,298 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2018-11-18 16:08:33,299 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:08:33,299 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:08:33,413 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:08:33,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:08:33 BoogieIcfgContainer [2018-11-18 16:08:33,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:08:33,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:08:33,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:08:33,416 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:08:33,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:08:33" (1/3) ... [2018-11-18 16:08:33,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40167bd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:08:33, skipping insertion in model container [2018-11-18 16:08:33,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:08:33" (2/3) ... [2018-11-18 16:08:33,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40167bd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:08:33, skipping insertion in model container [2018-11-18 16:08:33,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:08:33" (3/3) ... [2018-11-18 16:08:33,419 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_non_eq_false-no-overflow.c [2018-11-18 16:08:33,425 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:08:33,429 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-18 16:08:33,438 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-18 16:08:33,463 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:08:33,463 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:08:33,463 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:08:33,463 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:08:33,464 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:08:33,464 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:08:33,464 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:08:33,464 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:08:33,478 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-11-18 16:08:33,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 16:08:33,483 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:08:33,485 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:08:33,487 INFO L423 AbstractCegarLoop]: === Iteration 1 === [sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 16:08:33,491 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:33,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1254833423, now seen corresponding path program 1 times [2018-11-18 16:08:33,494 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:08:33,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:33,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:08:33,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:33,530 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:08:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:08:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:08:33,600 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:08:33,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 16:08:33,601 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:08:33,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 16:08:33,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 16:08:33,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:08:33,613 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2018-11-18 16:08:33,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:08:33,699 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2018-11-18 16:08:33,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 16:08:33,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-11-18 16:08:33,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:08:33,705 INFO L225 Difference]: With dead ends: 35 [2018-11-18 16:08:33,705 INFO L226 Difference]: Without dead ends: 24 [2018-11-18 16:08:33,707 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 16:08:33,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-18 16:08:33,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-18 16:08:33,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-18 16:08:33,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-11-18 16:08:33,732 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 9 [2018-11-18 16:08:33,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:08:33,732 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-11-18 16:08:33,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 16:08:33,733 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-11-18 16:08:33,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 16:08:33,734 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:08:33,734 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:08:33,734 INFO L423 AbstractCegarLoop]: === Iteration 2 === [sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 16:08:33,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:08:33,734 INFO L82 PathProgramCache]: Analyzing trace with hash -245130407, now seen corresponding path program 1 times [2018-11-18 16:08:33,735 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:08:33,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:33,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:08:33,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:08:33,736 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:08:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:08:33,757 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 16:08:33,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 04:08:33 BoogieIcfgContainer [2018-11-18 16:08:33,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 16:08:33,773 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:08:33,773 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:08:33,774 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:08:33,774 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:08:33" (3/4) ... [2018-11-18 16:08:33,775 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 16:08:33,800 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_9b569e07-2953-47bb-b922-4603ac1189d5/bin-2019/utaipan/witness.graphml [2018-11-18 16:08:33,800 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:08:33,800 INFO L168 Benchmark]: Toolchain (without parser) took 763.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 961.9 MB in the beginning and 1.1 GB in the end (delta: -127.5 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-18 16:08:33,801 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:08:33,802 INFO L168 Benchmark]: CACSL2BoogieTranslator took 163.57 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 951.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:08:33,802 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.66 ms. Allocated memory is still 1.0 GB. Free memory is still 951.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:08:33,802 INFO L168 Benchmark]: Boogie Preprocessor took 10.22 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:08:33,803 INFO L168 Benchmark]: RCFGBuilder took 189.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -178.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-18 16:08:33,803 INFO L168 Benchmark]: TraceAbstraction took 359.02 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: 34.9 MB). Peak memory consumption was 34.9 MB. Max. memory is 11.5 GB. [2018-11-18 16:08:33,804 INFO L168 Benchmark]: Witness Printer took 26.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:08:33,806 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 163.57 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 951.2 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 11.66 ms. Allocated memory is still 1.0 GB. Free memory is still 951.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.22 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 189.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -178.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 359.02 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: 34.9 MB). Peak memory consumption was 34.9 MB. Max. memory is 11.5 GB. * Witness Printer took 26.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: integer overflow possible integer overflow possible We found a FailurePath: [L13] int a = __VERIFIER_nondet_int() ; [L14] int b = __VERIFIER_nondet_int(); [L15] CALL sum(a, b) VAL [\old(m)=0, \old(n)=-2147483648] [L5] COND FALSE !(n == 0) VAL [\old(m)=0, \old(n)=-2147483648, m=0, n=-2147483648] [L8] n - 1 VAL [\old(m)=0, \old(n)=-2147483648, m=0, n=-2147483648] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 6 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s 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...