./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted/Pure2Phase_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_8df41ae9-2639-4c6f-8d03-097645d858a8/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8df41ae9-2639-4c6f-8d03-097645d858a8/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8df41ae9-2639-4c6f-8d03-097645d858a8/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8df41ae9-2639-4c6f-8d03-097645d858a8/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Pure2Phase_false-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_8df41ae9-2639-4c6f-8d03-097645d858a8/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8df41ae9-2639-4c6f-8d03-097645d858a8/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 aad7ddb2e0d4476ced8f52bbccb469aff17d069d ............................................................................................................................................................................................................................................................................... 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 14:14:29,383 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 14:14:29,384 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 14:14:29,391 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 14:14:29,391 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 14:14:29,392 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 14:14:29,393 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 14:14:29,394 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 14:14:29,395 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 14:14:29,395 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 14:14:29,396 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 14:14:29,396 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 14:14:29,397 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 14:14:29,398 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 14:14:29,398 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 14:14:29,399 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 14:14:29,399 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 14:14:29,400 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 14:14:29,402 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 14:14:29,403 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 14:14:29,403 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 14:14:29,404 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 14:14:29,406 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 14:14:29,406 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 14:14:29,406 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 14:14:29,406 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 14:14:29,407 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 14:14:29,408 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 14:14:29,408 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 14:14:29,409 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 14:14:29,409 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 14:14:29,410 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 14:14:29,410 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 14:14:29,410 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 14:14:29,410 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 14:14:29,411 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 14:14:29,411 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8df41ae9-2639-4c6f-8d03-097645d858a8/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-11-18 14:14:29,420 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 14:14:29,420 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 14:14:29,421 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 14:14:29,421 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 14:14:29,421 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 14:14:29,421 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 14:14:29,421 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 14:14:29,422 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 14:14:29,422 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 14:14:29,422 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 14:14:29,422 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 14:14:29,422 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 14:14:29,422 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 14:14:29,423 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 14:14:29,423 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 14:14:29,423 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 14:14:29,423 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 14:14:29,423 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 14:14:29,423 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 14:14:29,424 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 14:14:29,424 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 14:14:29,424 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 14:14:29,424 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 14:14:29,424 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 14:14:29,424 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 14:14:29,424 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 14:14:29,424 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 14:14:29,425 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 14:14:29,425 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 14:14:29,425 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 14:14:29,425 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 14:14:29,425 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 14:14:29,425 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 14:14:29,425 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 14:14:29,426 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 14:14:29,426 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 14:14:29,426 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_8df41ae9-2639-4c6f-8d03-097645d858a8/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 -> aad7ddb2e0d4476ced8f52bbccb469aff17d069d [2018-11-18 14:14:29,447 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 14:14:29,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 14:14:29,458 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 14:14:29,459 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 14:14:29,459 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 14:14:29,459 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8df41ae9-2639-4c6f-8d03-097645d858a8/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted/Pure2Phase_false-no-overflow.c [2018-11-18 14:14:29,494 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8df41ae9-2639-4c6f-8d03-097645d858a8/bin-2019/utaipan/data/404b1cdb8/47ec0dc5d6e04e79868f71409e9a0459/FLAG37761e7d9 [2018-11-18 14:14:29,907 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 14:14:29,908 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8df41ae9-2639-4c6f-8d03-097645d858a8/sv-benchmarks/c/termination-crafted/Pure2Phase_false-no-overflow.c [2018-11-18 14:14:29,913 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8df41ae9-2639-4c6f-8d03-097645d858a8/bin-2019/utaipan/data/404b1cdb8/47ec0dc5d6e04e79868f71409e9a0459/FLAG37761e7d9 [2018-11-18 14:14:29,924 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8df41ae9-2639-4c6f-8d03-097645d858a8/bin-2019/utaipan/data/404b1cdb8/47ec0dc5d6e04e79868f71409e9a0459 [2018-11-18 14:14:29,927 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 14:14:29,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 14:14:29,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 14:14:29,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 14:14:29,931 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 14:14:29,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:14:29" (1/1) ... [2018-11-18 14:14:29,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88e9939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:29, skipping insertion in model container [2018-11-18 14:14:29,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:14:29" (1/1) ... [2018-11-18 14:14:29,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 14:14:29,955 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 14:14:30,076 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:14:30,078 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 14:14:30,088 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:14:30,097 INFO L195 MainTranslator]: Completed translation [2018-11-18 14:14:30,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:30 WrapperNode [2018-11-18 14:14:30,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 14:14:30,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 14:14:30,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 14:14:30,099 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 14:14:30,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:30" (1/1) ... [2018-11-18 14:14:30,110 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:30" (1/1) ... [2018-11-18 14:14:30,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 14:14:30,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 14:14:30,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 14:14:30,117 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 14:14:30,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:30" (1/1) ... [2018-11-18 14:14:30,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:30" (1/1) ... [2018-11-18 14:14:30,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:30" (1/1) ... [2018-11-18 14:14:30,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:30" (1/1) ... [2018-11-18 14:14:30,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:30" (1/1) ... [2018-11-18 14:14:30,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:30" (1/1) ... [2018-11-18 14:14:30,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:30" (1/1) ... [2018-11-18 14:14:30,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 14:14:30,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 14:14:30,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 14:14:30,134 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 14:14:30,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8df41ae9-2639-4c6f-8d03-097645d858a8/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 14:14:30,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 14:14:30,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 14:14:30,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 14:14:30,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 14:14:30,212 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 14:14:30,212 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 14:14:30,313 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 14:14:30,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:14:30 BoogieIcfgContainer [2018-11-18 14:14:30,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 14:14:30,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 14:14:30,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 14:14:30,317 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 14:14:30,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:14:29" (1/3) ... [2018-11-18 14:14:30,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@992127e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:14:30, skipping insertion in model container [2018-11-18 14:14:30,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:30" (2/3) ... [2018-11-18 14:14:30,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@992127e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:14:30, skipping insertion in model container [2018-11-18 14:14:30,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:14:30" (3/3) ... [2018-11-18 14:14:30,320 INFO L112 eAbstractionObserver]: Analyzing ICFG Pure2Phase_false-no-overflow.c [2018-11-18 14:14:30,328 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 14:14:30,334 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-18 14:14:30,347 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-18 14:14:30,373 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 14:14:30,373 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 14:14:30,373 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 14:14:30,373 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 14:14:30,373 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 14:14:30,373 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 14:14:30,373 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 14:14:30,374 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 14:14:30,387 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-18 14:14:30,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-18 14:14:30,392 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:14:30,392 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:14:30,394 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 14:14:30,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:14:30,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1646050875, now seen corresponding path program 1 times [2018-11-18 14:14:30,400 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:14:30,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:14:30,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:14:30,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:14:30,448 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:14:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:14:30,497 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 14:14:30,498 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:14:30,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 14:14:30,498 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 14:14:30,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 14:14:30,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 14:14:30,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 14:14:30,511 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2018-11-18 14:14:30,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:14:30,531 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-11-18 14:14:30,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 14:14:30,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-11-18 14:14:30,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:14:30,539 INFO L225 Difference]: With dead ends: 26 [2018-11-18 14:14:30,539 INFO L226 Difference]: Without dead ends: 15 [2018-11-18 14:14:30,542 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 14:14:30,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-18 14:14:30,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-18 14:14:30,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-18 14:14:30,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-11-18 14:14:30,567 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 8 [2018-11-18 14:14:30,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:14:30,567 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-11-18 14:14:30,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 14:14:30,568 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-11-18 14:14:30,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 14:14:30,568 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:14:30,568 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:14:30,569 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 14:14:30,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:14:30,569 INFO L82 PathProgramCache]: Analyzing trace with hash 512030475, now seen corresponding path program 1 times [2018-11-18 14:14:30,569 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:14:30,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:14:30,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:14:30,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:14:30,571 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:14:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:14:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:14:30,588 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 14:14:30,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 02:14:30 BoogieIcfgContainer [2018-11-18 14:14:30,602 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 14:14:30,602 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 14:14:30,602 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 14:14:30,602 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 14:14:30,603 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:14:30" (3/4) ... [2018-11-18 14:14:30,604 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 14:14:30,626 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_8df41ae9-2639-4c6f-8d03-097645d858a8/bin-2019/utaipan/witness.graphml [2018-11-18 14:14:30,626 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 14:14:30,626 INFO L168 Benchmark]: Toolchain (without parser) took 699.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -170.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:14:30,627 INFO L168 Benchmark]: CDTParser took 0.11 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. [2018-11-18 14:14:30,627 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.98 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:14:30,628 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.94 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:14:30,628 INFO L168 Benchmark]: Boogie Preprocessor took 16.42 ms. Allocated memory is still 1.0 GB. Free memory was 941.9 MB in the beginning and 939.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:14:30,628 INFO L168 Benchmark]: RCFGBuilder took 180.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -208.8 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-18 14:14:30,629 INFO L168 Benchmark]: TraceAbstraction took 287.83 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: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2018-11-18 14:14:30,629 INFO L168 Benchmark]: Witness Printer took 23.81 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 14:14:30,631 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 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 169.98 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 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 17.94 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.42 ms. Allocated memory is still 1.0 GB. Free memory was 941.9 MB in the beginning and 939.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 180.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -208.8 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 287.83 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: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * Witness Printer took 23.81 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: 20]: integer overflow possible integer overflow possible We found a FailurePath: [L16] int y, z; [L17] y = __VERIFIER_nondet_int() [L18] z = __VERIFIER_nondet_int() [L19] COND TRUE z >= 0 VAL [y=-2147483648, z=0] [L20] y - 1 VAL [y=-2147483648, z=0] - 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: 16 SDtfs, 11 SDslu, 6 SDs, 0 SdLazy, 5 SolverSat, 1 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, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 91 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...