./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.13_false-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_9fa9847a-dbd7-4038-992c-0c71845217bf/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9fa9847a-dbd7-4038-992c-0c71845217bf/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9fa9847a-dbd7-4038-992c-0c71845217bf/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9fa9847a-dbd7-4038-992c-0c71845217bf/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.13_false-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_9fa9847a-dbd7-4038-992c-0c71845217bf/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9fa9847a-dbd7-4038-992c-0c71845217bf/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 64bit --witnessprinter.graph.data.programhash cdf6d3d37a0c9deca41e9c71274e99ccf59bf4a2 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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-aa41828 [2018-11-22 22:57:35,185 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 22:57:35,186 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 22:57:35,194 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 22:57:35,195 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 22:57:35,195 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 22:57:35,196 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 22:57:35,197 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 22:57:35,198 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 22:57:35,199 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 22:57:35,200 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 22:57:35,200 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 22:57:35,201 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 22:57:35,202 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 22:57:35,203 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 22:57:35,203 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 22:57:35,204 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 22:57:35,205 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 22:57:35,206 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 22:57:35,208 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 22:57:35,208 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 22:57:35,209 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 22:57:35,211 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 22:57:35,211 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 22:57:35,211 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 22:57:35,212 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 22:57:35,213 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 22:57:35,214 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 22:57:35,215 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 22:57:35,215 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 22:57:35,215 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 22:57:35,216 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 22:57:35,216 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 22:57:35,216 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 22:57:35,217 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 22:57:35,218 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 22:57:35,218 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9fa9847a-dbd7-4038-992c-0c71845217bf/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-11-22 22:57:35,228 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 22:57:35,228 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 22:57:35,228 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 22:57:35,228 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 22:57:35,229 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-22 22:57:35,229 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-22 22:57:35,229 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-22 22:57:35,229 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-22 22:57:35,229 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-22 22:57:35,229 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-22 22:57:35,229 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-22 22:57:35,229 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-22 22:57:35,230 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-22 22:57:35,230 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 22:57:35,230 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-22 22:57:35,230 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 22:57:35,231 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 22:57:35,231 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-22 22:57:35,231 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 22:57:35,231 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-22 22:57:35,231 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-22 22:57:35,231 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 22:57:35,231 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 22:57:35,232 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-22 22:57:35,232 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 22:57:35,232 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 22:57:35,232 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 22:57:35,232 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 22:57:35,232 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 22:57:35,232 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 22:57:35,232 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 22:57:35,232 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-22 22:57:35,232 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-22 22:57:35,232 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 22:57:35,232 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-22 22:57:35,233 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-22 22:57:35,233 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_9fa9847a-dbd7-4038-992c-0c71845217bf/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cdf6d3d37a0c9deca41e9c71274e99ccf59bf4a2 [2018-11-22 22:57:35,260 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 22:57:35,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 22:57:35,271 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 22:57:35,272 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 22:57:35,272 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 22:57:35,272 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9fa9847a-dbd7-4038-992c-0c71845217bf/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.13_false-no-overflow.c [2018-11-22 22:57:35,311 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9fa9847a-dbd7-4038-992c-0c71845217bf/bin-2019/utaipan/data/d5297a257/0f820f1812654936955f2e5a16a7131b/FLAGe942aabdb [2018-11-22 22:57:35,713 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 22:57:35,713 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9fa9847a-dbd7-4038-992c-0c71845217bf/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.13_false-no-overflow.c [2018-11-22 22:57:35,717 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9fa9847a-dbd7-4038-992c-0c71845217bf/bin-2019/utaipan/data/d5297a257/0f820f1812654936955f2e5a16a7131b/FLAGe942aabdb [2018-11-22 22:57:35,727 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9fa9847a-dbd7-4038-992c-0c71845217bf/bin-2019/utaipan/data/d5297a257/0f820f1812654936955f2e5a16a7131b [2018-11-22 22:57:35,730 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 22:57:35,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 22:57:35,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 22:57:35,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 22:57:35,734 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 22:57:35,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:57:35" (1/1) ... [2018-11-22 22:57:35,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56c8d80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:57:35, skipping insertion in model container [2018-11-22 22:57:35,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:57:35" (1/1) ... [2018-11-22 22:57:35,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 22:57:35,754 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 22:57:35,860 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 22:57:35,862 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 22:57:35,872 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 22:57:35,880 INFO L195 MainTranslator]: Completed translation [2018-11-22 22:57:35,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:57:35 WrapperNode [2018-11-22 22:57:35,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 22:57:35,881 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 22:57:35,881 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 22:57:35,881 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 22:57:35,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:57:35" (1/1) ... [2018-11-22 22:57:35,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:57:35" (1/1) ... [2018-11-22 22:57:35,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 22:57:35,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 22:57:35,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 22:57:35,894 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 22:57:35,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:57:35" (1/1) ... [2018-11-22 22:57:35,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:57:35" (1/1) ... [2018-11-22 22:57:35,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:57:35" (1/1) ... [2018-11-22 22:57:35,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:57:35" (1/1) ... [2018-11-22 22:57:35,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:57:35" (1/1) ... [2018-11-22 22:57:35,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:57:35" (1/1) ... [2018-11-22 22:57:35,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:57:35" (1/1) ... [2018-11-22 22:57:35,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 22:57:35,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 22:57:35,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 22:57:35,906 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 22:57:35,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:57:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9fa9847a-dbd7-4038-992c-0c71845217bf/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 [2018-11-22 22:57:35,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-22 22:57:35,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-22 22:57:35,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 22:57:35,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 22:57:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-22 22:57:35,982 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-22 22:57:36,091 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 22:57:36,092 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-22 22:57:36,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:57:36 BoogieIcfgContainer [2018-11-22 22:57:36,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 22:57:36,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 22:57:36,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 22:57:36,095 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 22:57:36,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:57:35" (1/3) ... [2018-11-22 22:57:36,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c35546d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:57:36, skipping insertion in model container [2018-11-22 22:57:36,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:57:35" (2/3) ... [2018-11-22 22:57:36,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c35546d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:57:36, skipping insertion in model container [2018-11-22 22:57:36,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:57:36" (3/3) ... [2018-11-22 22:57:36,098 INFO L112 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex2.13_false-no-overflow.c [2018-11-22 22:57:36,104 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 22:57:36,109 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-22 22:57:36,119 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-22 22:57:36,140 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 22:57:36,141 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-22 22:57:36,141 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 22:57:36,141 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 22:57:36,141 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 22:57:36,141 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 22:57:36,141 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 22:57:36,141 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 22:57:36,153 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-11-22 22:57:36,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-11-22 22:57:36,158 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:57:36,159 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-11-22 22:57:36,160 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-22 22:57:36,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:57:36,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1775992520, now seen corresponding path program 1 times [2018-11-22 22:57:36,165 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 22:57:36,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:57:36,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:57:36,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:57:36,199 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 22:57:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:57:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:57:36,233 INFO L469 BasicCegarLoop]: Counterexample might be feasible ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] CALL call ULTIMATE.init(); [?] assume true; [?] RET #32#return; [?] CALL call #t~ret2 := main(); [?] havoc ~x~0;havoc ~y~0;assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~x~0 := #t~nondet0;havoc #t~nondet0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~y~0 := #t~nondet1;havoc #t~nondet1; VAL [main_~x~0=2147483646, main_~y~0=(- 2)] [?] assume !(~x~0 - ~y~0 <= 2147483647); VAL [main_~x~0=2147483646, main_~y~0=(- 2)] [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret2 := main(); [L23] havoc ~x~0; [L23] havoc ~y~0; [L24] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L24] ~x~0 := #t~nondet0; [L24] havoc #t~nondet0; [L25] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L25] ~y~0 := #t~nondet1; [L25] havoc #t~nondet1; VAL [~x~0=2147483646, ~y~0=-2] [L26] assert ~x~0 - ~y~0 <= 2147483647; VAL [~x~0=2147483646, ~y~0=-2] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret2 := main(); [L23] havoc ~x~0; [L23] havoc ~y~0; [L24] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L24] ~x~0 := #t~nondet0; [L24] havoc #t~nondet0; [L25] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L25] ~y~0 := #t~nondet1; [L25] havoc #t~nondet1; VAL [~x~0=2147483646, ~y~0=-2] [L26] assert ~x~0 - ~y~0 <= 2147483647; VAL [~x~0=2147483646, ~y~0=-2] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret2 := main(); [L23] havoc ~x~0; [L23] havoc ~y~0; [L24] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L24] ~x~0 := #t~nondet0; [L24] havoc #t~nondet0; [L25] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L25] ~y~0 := #t~nondet1; [L25] havoc #t~nondet1; VAL [~x~0=2147483646, ~y~0=-2] [L26] assert ~x~0 - ~y~0 <= 2147483647; VAL [~x~0=2147483646, ~y~0=-2] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret2 := main(); [L23] havoc ~x~0; [L23] havoc ~y~0; [L24] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L24] ~x~0 := #t~nondet0; [L24] havoc #t~nondet0; [L25] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L25] ~y~0 := #t~nondet1; [L25] havoc #t~nondet1; VAL [~x~0=2147483646, ~y~0=-2] [L26] assert ~x~0 - ~y~0 <= 2147483647; VAL [~x~0=2147483646, ~y~0=-2] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret2 := main(); [L23] havoc ~x~0; [L23] havoc ~y~0; [L24] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L24] ~x~0 := #t~nondet0; [L24] havoc #t~nondet0; [L25] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L25] ~y~0 := #t~nondet1; [L25] havoc #t~nondet1; VAL [~x~0=2147483646, ~y~0=-2] [L26] assert ~x~0 - ~y~0 <= 2147483647; VAL [~x~0=2147483646, ~y~0=-2] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret2 := main(); [L23] havoc ~x~0; [L23] havoc ~y~0; [L24] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L24] ~x~0 := #t~nondet0; [L24] havoc #t~nondet0; [L25] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L25] ~y~0 := #t~nondet1; [L25] havoc #t~nondet1; VAL [~x~0=2147483646, ~y~0=-2] [L26] assert ~x~0 - ~y~0 <= 2147483647; VAL [~x~0=2147483646, ~y~0=-2] [L23] int x, y; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] x - y VAL [x=2147483646, y=-2] ----- [2018-11-22 22:57:36,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 10:57:36 BoogieIcfgContainer [2018-11-22 22:57:36,250 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-22 22:57:36,251 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 22:57:36,251 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 22:57:36,251 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 22:57:36,251 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:57:36" (3/4) ... [2018-11-22 22:57:36,253 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] CALL call ULTIMATE.init(); [?] assume true; [?] RET #32#return; [?] CALL call #t~ret2 := main(); [?] havoc ~x~0;havoc ~y~0;assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~x~0 := #t~nondet0;havoc #t~nondet0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~y~0 := #t~nondet1;havoc #t~nondet1; VAL [main_~x~0=2147483646, main_~y~0=(- 2)] [?] assume !(~x~0 - ~y~0 <= 2147483647); VAL [main_~x~0=2147483646, main_~y~0=(- 2)] [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret2 := main(); [L23] havoc ~x~0; [L23] havoc ~y~0; [L24] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L24] ~x~0 := #t~nondet0; [L24] havoc #t~nondet0; [L25] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L25] ~y~0 := #t~nondet1; [L25] havoc #t~nondet1; VAL [~x~0=2147483646, ~y~0=-2] [L26] assert ~x~0 - ~y~0 <= 2147483647; VAL [~x~0=2147483646, ~y~0=-2] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret2 := main(); [L23] havoc ~x~0; [L23] havoc ~y~0; [L24] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L24] ~x~0 := #t~nondet0; [L24] havoc #t~nondet0; [L25] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L25] ~y~0 := #t~nondet1; [L25] havoc #t~nondet1; VAL [~x~0=2147483646, ~y~0=-2] [L26] assert ~x~0 - ~y~0 <= 2147483647; VAL [~x~0=2147483646, ~y~0=-2] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret2 := main(); [L23] havoc ~x~0; [L23] havoc ~y~0; [L24] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L24] ~x~0 := #t~nondet0; [L24] havoc #t~nondet0; [L25] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L25] ~y~0 := #t~nondet1; [L25] havoc #t~nondet1; VAL [~x~0=2147483646, ~y~0=-2] [L26] assert ~x~0 - ~y~0 <= 2147483647; VAL [~x~0=2147483646, ~y~0=-2] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret2 := main(); [L23] havoc ~x~0; [L23] havoc ~y~0; [L24] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L24] ~x~0 := #t~nondet0; [L24] havoc #t~nondet0; [L25] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L25] ~y~0 := #t~nondet1; [L25] havoc #t~nondet1; VAL [~x~0=2147483646, ~y~0=-2] [L26] assert ~x~0 - ~y~0 <= 2147483647; VAL [~x~0=2147483646, ~y~0=-2] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret2 := main(); [L23] havoc ~x~0; [L23] havoc ~y~0; [L24] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L24] ~x~0 := #t~nondet0; [L24] havoc #t~nondet0; [L25] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L25] ~y~0 := #t~nondet1; [L25] havoc #t~nondet1; VAL [~x~0=2147483646, ~y~0=-2] [L26] assert ~x~0 - ~y~0 <= 2147483647; VAL [~x~0=2147483646, ~y~0=-2] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret2 := main(); [L23] havoc ~x~0; [L23] havoc ~y~0; [L24] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L24] ~x~0 := #t~nondet0; [L24] havoc #t~nondet0; [L25] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L25] ~y~0 := #t~nondet1; [L25] havoc #t~nondet1; VAL [~x~0=2147483646, ~y~0=-2] [L26] assert ~x~0 - ~y~0 <= 2147483647; VAL [~x~0=2147483646, ~y~0=-2] [L23] int x, y; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] x - y VAL [x=2147483646, y=-2] ----- [2018-11-22 22:57:36,278 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_9fa9847a-dbd7-4038-992c-0c71845217bf/bin-2019/utaipan/witness.graphml [2018-11-22 22:57:36,279 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 22:57:36,279 INFO L168 Benchmark]: Toolchain (without parser) took 549.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.0 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -175.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 22:57:36,280 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 22:57:36,280 INFO L168 Benchmark]: CACSL2BoogieTranslator took 149.78 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-22 22:57:36,281 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.50 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 22:57:36,281 INFO L168 Benchmark]: Boogie Preprocessor took 11.75 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-22 22:57:36,282 INFO L168 Benchmark]: RCFGBuilder took 186.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.0 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -211.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-11-22 22:57:36,282 INFO L168 Benchmark]: TraceAbstraction took 157.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2018-11-22 22:57:36,283 INFO L168 Benchmark]: Witness Printer took 28.03 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: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2018-11-22 22:57:36,287 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 149.78 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.50 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.75 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 186.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.0 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -211.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 157.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * Witness Printer took 28.03 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: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 26]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, y; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] x - y VAL [x=2147483646, y=-2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 6 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...