./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex8_false-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_eba82b53-fd76-40b7-b2a9-aebef06b8d68/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_eba82b53-fd76-40b7-b2a9-aebef06b8d68/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_eba82b53-fd76-40b7-b2a9-aebef06b8d68/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_eba82b53-fd76-40b7-b2a9-aebef06b8d68/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex8_false-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_eba82b53-fd76-40b7-b2a9-aebef06b8d68/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_eba82b53-fd76-40b7-b2a9-aebef06b8d68/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 46300f8df490eeff7b37ea09f59b148489ff7bcb ............................................................................................................................................................................................................................................................................... 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 13:04:49,336 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:04:49,337 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:04:49,343 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:04:49,343 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:04:49,344 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:04:49,344 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:04:49,346 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:04:49,347 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:04:49,347 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:04:49,348 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:04:49,348 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:04:49,348 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:04:49,349 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:04:49,350 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:04:49,350 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:04:49,351 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:04:49,352 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:04:49,353 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:04:49,354 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:04:49,354 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:04:49,355 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:04:49,356 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:04:49,356 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:04:49,356 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:04:49,357 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:04:49,357 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:04:49,358 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:04:49,358 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:04:49,359 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:04:49,359 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:04:49,359 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:04:49,359 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:04:49,359 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:04:49,360 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:04:49,360 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:04:49,360 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_eba82b53-fd76-40b7-b2a9-aebef06b8d68/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-11-18 13:04:49,370 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:04:49,370 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:04:49,371 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:04:49,371 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 13:04:49,371 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 13:04:49,371 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 13:04:49,372 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 13:04:49,372 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 13:04:49,372 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 13:04:49,372 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 13:04:49,372 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 13:04:49,372 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 13:04:49,372 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 13:04:49,373 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:04:49,373 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 13:04:49,373 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 13:04:49,373 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:04:49,373 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:04:49,373 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:04:49,374 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:04:49,374 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 13:04:49,374 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:04:49,374 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:04:49,374 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:04:49,374 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:04:49,374 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:04:49,375 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:04:49,375 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:04:49,375 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:04:49,375 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:04:49,375 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:04:49,375 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:04:49,375 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 13:04:49,375 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:04:49,376 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 13:04:49,376 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 13:04:49,376 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_eba82b53-fd76-40b7-b2a9-aebef06b8d68/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 -> 46300f8df490eeff7b37ea09f59b148489ff7bcb [2018-11-18 13:04:49,399 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:04:49,408 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:04:49,411 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:04:49,412 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:04:49,412 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:04:49,413 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_eba82b53-fd76-40b7-b2a9-aebef06b8d68/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex8_false-no-overflow.c [2018-11-18 13:04:49,456 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eba82b53-fd76-40b7-b2a9-aebef06b8d68/bin-2019/utaipan/data/160dfa5dd/141168b301e94bb284fab7743ef9ac7c/FLAGaf33f63b3 [2018-11-18 13:04:49,859 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:04:49,859 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_eba82b53-fd76-40b7-b2a9-aebef06b8d68/sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex8_false-no-overflow.c [2018-11-18 13:04:49,863 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eba82b53-fd76-40b7-b2a9-aebef06b8d68/bin-2019/utaipan/data/160dfa5dd/141168b301e94bb284fab7743ef9ac7c/FLAGaf33f63b3 [2018-11-18 13:04:49,873 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_eba82b53-fd76-40b7-b2a9-aebef06b8d68/bin-2019/utaipan/data/160dfa5dd/141168b301e94bb284fab7743ef9ac7c [2018-11-18 13:04:49,875 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:04:49,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 13:04:49,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:04:49,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:04:49,880 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:04:49,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:04:49" (1/1) ... [2018-11-18 13:04:49,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ebd9ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:04:49, skipping insertion in model container [2018-11-18 13:04:49,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:04:49" (1/1) ... [2018-11-18 13:04:49,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:04:49,906 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:04:50,019 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:04:50,021 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:04:50,030 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:04:50,037 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:04:50,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:04:50 WrapperNode [2018-11-18 13:04:50,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:04:50,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 13:04:50,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 13:04:50,038 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 13:04:50,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:04:50" (1/1) ... [2018-11-18 13:04:50,046 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:04:50" (1/1) ... [2018-11-18 13:04:50,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 13:04:50,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:04:50,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:04:50,051 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:04:50,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:04:50" (1/1) ... [2018-11-18 13:04:50,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:04:50" (1/1) ... [2018-11-18 13:04:50,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:04:50" (1/1) ... [2018-11-18 13:04:50,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:04:50" (1/1) ... [2018-11-18 13:04:50,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:04:50" (1/1) ... [2018-11-18 13:04:50,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:04:50" (1/1) ... [2018-11-18 13:04:50,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:04:50" (1/1) ... [2018-11-18 13:04:50,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:04:50,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:04:50,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:04:50,062 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:04:50,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:04:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eba82b53-fd76-40b7-b2a9-aebef06b8d68/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 13:04:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:04:50,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:04:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:04:50,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:04:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:04:50,132 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:04:50,225 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:04:50,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:04:50 BoogieIcfgContainer [2018-11-18 13:04:50,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:04:50,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:04:50,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:04:50,228 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:04:50,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:04:49" (1/3) ... [2018-11-18 13:04:50,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5228e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:04:50, skipping insertion in model container [2018-11-18 13:04:50,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:04:50" (2/3) ... [2018-11-18 13:04:50,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5228e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:04:50, skipping insertion in model container [2018-11-18 13:04:50,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:04:50" (3/3) ... [2018-11-18 13:04:50,230 INFO L112 eAbstractionObserver]: Analyzing ICFG LeikeHeizmann-TACAS2014-Ex8_false-no-overflow.c [2018-11-18 13:04:50,236 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:04:50,240 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-18 13:04:50,249 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-18 13:04:50,270 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:04:50,270 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:04:50,270 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:04:50,270 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:04:50,270 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:04:50,270 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:04:50,270 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:04:50,270 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:04:50,283 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-18 13:04:50,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 13:04:50,286 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:04:50,287 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:04:50,289 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:04:50,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:04:50,292 INFO L82 PathProgramCache]: Analyzing trace with hash 512030571, now seen corresponding path program 1 times [2018-11-18 13:04:50,294 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:04:50,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:04:50,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:04:50,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:04:50,327 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:04:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:04:50,381 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 13:04:50,383 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:04:50,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:04:50,383 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:04:50,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 13:04:50,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 13:04:50,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:04:50,399 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2018-11-18 13:04:50,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:04:50,426 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2018-11-18 13:04:50,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 13:04:50,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-18 13:04:50,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:04:50,436 INFO L225 Difference]: With dead ends: 42 [2018-11-18 13:04:50,436 INFO L226 Difference]: Without dead ends: 18 [2018-11-18 13:04:50,439 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:04:50,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-18 13:04:50,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-18 13:04:50,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-18 13:04:50,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-11-18 13:04:50,469 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 9 [2018-11-18 13:04:50,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:04:50,469 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-11-18 13:04:50,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 13:04:50,469 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-11-18 13:04:50,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 13:04:50,470 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:04:50,470 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:04:50,470 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:04:50,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:04:50,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1306921430, now seen corresponding path program 1 times [2018-11-18 13:04:50,471 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:04:50,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:04:50,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:04:50,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:04:50,472 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:04:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:04:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:04:50,493 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 13:04:50,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:04:50 BoogieIcfgContainer [2018-11-18 13:04:50,506 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 13:04:50,507 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:04:50,507 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:04:50,507 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:04:50,507 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:04:50" (3/4) ... [2018-11-18 13:04:50,509 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 13:04:50,535 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_eba82b53-fd76-40b7-b2a9-aebef06b8d68/bin-2019/utaipan/witness.graphml [2018-11-18 13:04:50,535 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:04:50,536 INFO L168 Benchmark]: Toolchain (without parser) took 660.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 959.3 MB in the beginning and 1.1 GB in the end (delta: -127.5 MB). Peak memory consumption was 8.3 MB. Max. memory is 11.5 GB. [2018-11-18 13:04:50,537 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:04:50,537 INFO L168 Benchmark]: CACSL2BoogieTranslator took 161.36 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:04:50,538 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.23 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:04:50,538 INFO L168 Benchmark]: Boogie Preprocessor took 11.25 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:04:50,539 INFO L168 Benchmark]: RCFGBuilder took 163.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -175.8 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-18 13:04:50,539 INFO L168 Benchmark]: TraceAbstraction took 280.41 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. [2018-11-18 13:04:50,540 INFO L168 Benchmark]: Witness Printer took 28.67 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:04:50,542 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 161.36 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 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 12.23 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.25 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 163.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -175.8 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 280.41 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 28.67 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 22]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int q, y; [L15] q = __VERIFIER_nondet_int() [L16] y = __VERIFIER_nondet_int() [L17] COND TRUE q > 0 VAL [q=1, y=-2147483648] [L18] COND FALSE !(y > 0) VAL [q=1, y=-2147483648] [L22] y - 1 VAL [q=1, y=-2147483648] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 4 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 24 SDtfs, 11 SDslu, 12 SDs, 0 SdLazy, 5 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 80 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...