./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/bitvector/num_conversion_1_true-unreach-call_true-no-overflow.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_7f7dcff6-ff0d-4146-aa68-1c0cfcee0766/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7f7dcff6-ff0d-4146-aa68-1c0cfcee0766/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7f7dcff6-ff0d-4146-aa68-1c0cfcee0766/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7f7dcff6-ff0d-4146-aa68-1c0cfcee0766/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_1_true-unreach-call_true-no-overflow.i -s /tmp/vcloud-vcloud-master/worker/working_dir_7f7dcff6-ff0d-4146-aa68-1c0cfcee0766/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7f7dcff6-ff0d-4146-aa68-1c0cfcee0766/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d2a071cc6090a217f48ed180b566a651717a8e39 ......................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/working_dir_7f7dcff6-ff0d-4146-aa68-1c0cfcee0766/bin-2019/utaipan/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 05:50:21,286 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:50:21,288 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:50:21,298 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:50:21,299 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:50:21,300 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:50:21,301 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:50:21,302 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:50:21,303 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:50:21,304 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:50:21,307 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:50:21,307 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:50:21,308 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:50:21,308 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:50:21,309 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:50:21,310 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:50:21,310 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:50:21,311 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:50:21,314 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:50:21,315 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:50:21,315 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:50:21,316 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:50:21,318 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:50:21,318 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:50:21,318 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:50:21,318 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:50:21,319 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:50:21,320 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:50:21,321 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:50:21,322 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:50:21,322 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:50:21,322 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 05:50:21,322 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 05:50:21,323 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 05:50:21,323 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 05:50:21,324 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 05:50:21,325 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7f7dcff6-ff0d-4146-aa68-1c0cfcee0766/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2018-10-27 05:50:21,335 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:50:21,335 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:50:21,336 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:50:21,336 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 05:50:21,336 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 05:50:21,336 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 05:50:21,336 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 05:50:21,337 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 05:50:21,337 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 05:50:21,337 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 05:50:21,337 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 05:50:21,338 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:50:21,338 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 05:50:21,338 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 05:50:21,338 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:50:21,338 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 05:50:21,338 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:50:21,338 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:50:21,338 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:50:21,339 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:50:21,339 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-10-27 05:50:21,339 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 05:50:21,339 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:50:21,339 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:50:21,339 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:50:21,339 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:50:21,340 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:50:21,340 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:50:21,342 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:50:21,342 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:50:21,343 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:50:21,343 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:50:21,343 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 05:50:21,343 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:50:21,343 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:50:21,343 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 05:50:21,343 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_7f7dcff6-ff0d-4146-aa68-1c0cfcee0766/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2a071cc6090a217f48ed180b566a651717a8e39 [2018-10-27 05:50:21,369 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:50:21,379 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:50:21,382 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:50:21,383 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:50:21,383 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:50:21,383 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7f7dcff6-ff0d-4146-aa68-1c0cfcee0766/bin-2019/utaipan/../../sv-benchmarks/c/bitvector/num_conversion_1_true-unreach-call_true-no-overflow.i [2018-10-27 05:50:21,429 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7f7dcff6-ff0d-4146-aa68-1c0cfcee0766/bin-2019/utaipan/data/0cb2e57ab/f3b3e96c35cb4df2b01d26f6ed539b3e/FLAG0dbf5f07f [2018-10-27 05:50:21,795 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:50:21,795 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7f7dcff6-ff0d-4146-aa68-1c0cfcee0766/sv-benchmarks/c/bitvector/num_conversion_1_true-unreach-call_true-no-overflow.i [2018-10-27 05:50:21,800 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7f7dcff6-ff0d-4146-aa68-1c0cfcee0766/bin-2019/utaipan/data/0cb2e57ab/f3b3e96c35cb4df2b01d26f6ed539b3e/FLAG0dbf5f07f [2018-10-27 05:50:21,812 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7f7dcff6-ff0d-4146-aa68-1c0cfcee0766/bin-2019/utaipan/data/0cb2e57ab/f3b3e96c35cb4df2b01d26f6ed539b3e [2018-10-27 05:50:21,815 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:50:21,816 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 05:50:21,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:50:21,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:50:21,822 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:50:21,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:50:21" (1/1) ... [2018-10-27 05:50:21,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5effdc14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:21, skipping insertion in model container [2018-10-27 05:50:21,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:50:21" (1/1) ... [2018-10-27 05:50:21,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:50:21,849 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:50:21,964 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:50:21,967 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:50:21,978 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:50:21,987 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:50:21,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:21 WrapperNode [2018-10-27 05:50:21,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:50:21,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 05:50:21,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 05:50:21,989 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 05:50:21,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:21" (1/1) ... [2018-10-27 05:50:22,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:21" (1/1) ... [2018-10-27 05:50:22,007 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 05:50:22,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:50:22,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:50:22,008 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:50:22,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:21" (1/1) ... [2018-10-27 05:50:22,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:21" (1/1) ... [2018-10-27 05:50:22,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:21" (1/1) ... [2018-10-27 05:50:22,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:21" (1/1) ... [2018-10-27 05:50:22,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:21" (1/1) ... [2018-10-27 05:50:22,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:21" (1/1) ... [2018-10-27 05:50:22,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:21" (1/1) ... [2018-10-27 05:50:22,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:50:22,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:50:22,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:50:22,027 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:50:22,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f7dcff6-ff0d-4146-aa68-1c0cfcee0766/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 [2018-10-27 05:50:22,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:50:22,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:50:22,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:50:22,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:50:22,177 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:50:22,177 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:50:22,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-27 05:50:22,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-27 05:50:22,383 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:50:22,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:50:22 BoogieIcfgContainer [2018-10-27 05:50:22,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:50:22,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:50:22,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:50:22,395 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:50:22,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:50:21" (1/3) ... [2018-10-27 05:50:22,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8595a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:50:22, skipping insertion in model container [2018-10-27 05:50:22,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:21" (2/3) ... [2018-10-27 05:50:22,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8595a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:50:22, skipping insertion in model container [2018-10-27 05:50:22,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:50:22" (3/3) ... [2018-10-27 05:50:22,397 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_1_true-unreach-call_true-no-overflow.i [2018-10-27 05:50:22,408 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:50:22,417 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-10-27 05:50:22,442 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-10-27 05:50:22,490 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:50:22,490 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:50:22,490 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:50:22,490 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:50:22,491 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:50:22,491 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:50:22,491 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:50:22,491 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:50:22,510 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-10-27 05:50:22,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-27 05:50:22,519 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:50:22,521 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:50:22,523 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:50:22,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:50:22,531 INFO L82 PathProgramCache]: Analyzing trace with hash -830409546, now seen corresponding path program 1 times [2018-10-27 05:50:22,533 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:50:22,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:50:22,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:50:22,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:50:22,566 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:50:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 05:50:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 05:50:22,608 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-27 05:50:22,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:50:22 BoogieIcfgContainer [2018-10-27 05:50:22,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 05:50:22,634 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 05:50:22,634 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 05:50:22,634 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 05:50:22,634 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:50:22" (3/4) ... [2018-10-27 05:50:22,638 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-27 05:50:22,638 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 05:50:22,638 INFO L168 Benchmark]: Toolchain (without parser) took 822.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.2 MB). Free memory was 960.7 MB in the beginning and 1.1 GB in the end (delta: -181.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:50:22,643 INFO L168 Benchmark]: CDTParser took 0.15 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. [2018-10-27 05:50:22,643 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.55 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 05:50:22,644 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.06 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 948.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2018-10-27 05:50:22,644 INFO L168 Benchmark]: Boogie Preprocessor took 18.27 ms. Allocated memory is still 1.0 GB. Free memory was 948.9 MB in the beginning and 946.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 05:50:22,645 INFO L168 Benchmark]: RCFGBuilder took 357.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.2 MB). Free memory was 946.2 MB in the beginning and 1.2 GB in the end (delta: -211.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2018-10-27 05:50:22,646 INFO L168 Benchmark]: TraceAbstraction took 248.76 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: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2018-10-27 05:50:22,647 INFO L168 Benchmark]: Witness Printer took 4.26 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. [2018-10-27 05:50:22,653 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 170.55 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 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 19.06 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 948.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.27 ms. Allocated memory is still 1.0 GB. Free memory was 948.9 MB in the beginning and 946.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 357.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.2 MB). Free memory was 946.2 MB in the beginning and 1.2 GB in the end (delta: -211.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 248.76 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: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.26 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: - UnprovableResult [Line: 22]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of shiftLeft at line 22. Possible FailurePath: [L14] unsigned char x; [L15] unsigned char y; [L16] unsigned char c; [L18] x = 37 [L19] y = 0 [L20] c = 0 VAL [c=0, x=37, y=0] [L21] COND TRUE c < (unsigned char)8 VAL [c=0, x=37, y=0] [L22] ((unsigned char)1) << c VAL [c=0, x=37, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 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=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...