./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_59efa263-c623-4b7d-b287-9e8da9132705/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_59efa263-c623-4b7d-b287-9e8da9132705/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_59efa263-c623-4b7d-b287-9e8da9132705/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_59efa263-c623-4b7d-b287-9e8da9132705/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i -s /tmp/vcloud-vcloud-master/worker/working_dir_59efa263-c623-4b7d-b287-9e8da9132705/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_59efa263-c623-4b7d-b287-9e8da9132705/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 0b1dd98d7879c6a852477263dd33a13d229a6eb3 ....................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/working_dir_59efa263-c623-4b7d-b287-9e8da9132705/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-aa41828 [2018-11-23 02:51:34,761 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 02:51:34,763 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 02:51:34,771 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 02:51:34,771 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 02:51:34,772 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 02:51:34,773 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 02:51:34,774 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 02:51:34,775 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 02:51:34,776 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 02:51:34,777 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 02:51:34,777 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 02:51:34,777 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 02:51:34,778 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 02:51:34,779 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 02:51:34,779 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 02:51:34,780 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 02:51:34,781 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 02:51:34,783 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 02:51:34,784 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 02:51:34,784 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 02:51:34,785 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 02:51:34,787 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 02:51:34,787 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 02:51:34,787 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 02:51:34,788 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 02:51:34,788 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 02:51:34,789 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 02:51:34,790 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 02:51:34,790 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 02:51:34,791 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 02:51:34,791 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 02:51:34,791 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 02:51:34,792 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 02:51:34,792 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 02:51:34,793 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 02:51:34,793 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_59efa263-c623-4b7d-b287-9e8da9132705/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2018-11-23 02:51:34,800 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 02:51:34,801 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 02:51:34,801 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 02:51:34,801 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 02:51:34,801 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 02:51:34,801 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 02:51:34,802 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 02:51:34,802 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 02:51:34,802 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 02:51:34,802 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 02:51:34,802 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 02:51:34,802 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 02:51:34,802 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 02:51:34,803 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 02:51:34,803 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 02:51:34,803 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 02:51:34,803 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 02:51:34,803 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 02:51:34,803 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 02:51:34,804 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 02:51:34,804 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 02:51:34,804 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 02:51:34,804 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-23 02:51:34,804 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 02:51:34,804 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 02:51:34,804 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 02:51:34,804 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 02:51:34,805 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 02:51:34,805 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 02:51:34,805 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 02:51:34,805 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 02:51:34,805 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 02:51:34,805 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 02:51:34,805 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 02:51:34,806 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 02:51:34,806 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 02:51:34,806 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 02:51:34,806 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 02:51:34,806 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 02:51:34,806 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_59efa263-c623-4b7d-b287-9e8da9132705/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 -> 0b1dd98d7879c6a852477263dd33a13d229a6eb3 [2018-11-23 02:51:34,830 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 02:51:34,839 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 02:51:34,842 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 02:51:34,843 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 02:51:34,843 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 02:51:34,844 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_59efa263-c623-4b7d-b287-9e8da9132705/bin-2019/utaipan/../../sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-23 02:51:34,893 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_59efa263-c623-4b7d-b287-9e8da9132705/bin-2019/utaipan/data/de02b051e/a1eef91f2cb24ad1a41fe02aebe9ff6a/FLAG0884c0336 [2018-11-23 02:51:35,208 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 02:51:35,208 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_59efa263-c623-4b7d-b287-9e8da9132705/sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-23 02:51:35,212 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_59efa263-c623-4b7d-b287-9e8da9132705/bin-2019/utaipan/data/de02b051e/a1eef91f2cb24ad1a41fe02aebe9ff6a/FLAG0884c0336 [2018-11-23 02:51:35,646 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_59efa263-c623-4b7d-b287-9e8da9132705/bin-2019/utaipan/data/de02b051e/a1eef91f2cb24ad1a41fe02aebe9ff6a [2018-11-23 02:51:35,648 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 02:51:35,649 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 02:51:35,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 02:51:35,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 02:51:35,653 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 02:51:35,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:51:35" (1/1) ... [2018-11-23 02:51:35,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58a31ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:35, skipping insertion in model container [2018-11-23 02:51:35,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:51:35" (1/1) ... [2018-11-23 02:51:35,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 02:51:35,678 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 02:51:35,785 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 02:51:35,787 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 02:51:35,797 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 02:51:35,805 INFO L195 MainTranslator]: Completed translation [2018-11-23 02:51:35,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:35 WrapperNode [2018-11-23 02:51:35,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 02:51:35,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 02:51:35,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 02:51:35,805 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 02:51:35,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:35" (1/1) ... [2018-11-23 02:51:35,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:35" (1/1) ... [2018-11-23 02:51:35,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 02:51:35,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 02:51:35,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 02:51:35,823 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 02:51:35,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:35" (1/1) ... [2018-11-23 02:51:35,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:35" (1/1) ... [2018-11-23 02:51:35,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:35" (1/1) ... [2018-11-23 02:51:35,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:35" (1/1) ... [2018-11-23 02:51:35,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:35" (1/1) ... [2018-11-23 02:51:35,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:35" (1/1) ... [2018-11-23 02:51:35,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:35" (1/1) ... [2018-11-23 02:51:35,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 02:51:35,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 02:51:35,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 02:51:35,842 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 02:51:35,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59efa263-c623-4b7d-b287-9e8da9132705/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 [2018-11-23 02:51:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 02:51:35,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 02:51:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 02:51:35,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 02:51:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 02:51:35,919 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 02:51:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 02:51:35,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 02:51:36,034 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 02:51:36,035 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 02:51:36,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:51:36 BoogieIcfgContainer [2018-11-23 02:51:36,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 02:51:36,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 02:51:36,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 02:51:36,038 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 02:51:36,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:51:35" (1/3) ... [2018-11-23 02:51:36,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f8e2f45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:51:36, skipping insertion in model container [2018-11-23 02:51:36,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:35" (2/3) ... [2018-11-23 02:51:36,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f8e2f45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:51:36, skipping insertion in model container [2018-11-23 02:51:36,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:51:36" (3/3) ... [2018-11-23 02:51:36,041 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-23 02:51:36,050 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 02:51:36,056 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-23 02:51:36,071 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-23 02:51:36,098 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 02:51:36,098 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 02:51:36,098 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 02:51:36,098 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 02:51:36,098 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 02:51:36,098 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 02:51:36,098 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 02:51:36,099 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 02:51:36,114 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-11-23 02:51:36,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-23 02:51:36,119 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:51:36,119 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:51:36,121 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:51:36,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:51:36,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1440060403, now seen corresponding path program 1 times [2018-11-23 02:51:36,129 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 02:51:36,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:51:36,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:51:36,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:51:36,171 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 02:51:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:51:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:51:36,217 INFO L469 BasicCegarLoop]: Counterexample might be feasible ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] CALL call ULTIMATE.init(); [?] assume true; [?] RET #49#return; [?] CALL call #t~ret1 := main(); [?] ~x~0 := #t~nondet0;havoc #t~nondet0;havoc ~y~0;havoc ~c~0;~y~0 := 0;~c~0 := 0; VAL [main_~c~0=0, main_~x~0=0, main_~y~0=0] [?] assume !!(~c~0 % 256 < 8); VAL [main_~c~0=0, main_~x~0=0, main_~y~0=0] [?] assume !(~shiftLeft(1, ~c~0 % 256) <= 2147483647); VAL [main_~c~0=0, main_~x~0=0, main_~y~0=0] [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L14] ~x~0 := #t~nondet0; [L14] havoc #t~nondet0; [L15] havoc ~y~0; [L16] havoc ~c~0; [L18] ~y~0 := 0; [L19] ~c~0 := 0; VAL [~c~0=0, ~x~0=0, ~y~0=0] [L20-L27] assume !!(~c~0 % 256 < 8); VAL [~c~0=0, ~x~0=0, ~y~0=0] [L21] assert ~shiftLeft(1, ~c~0 % 256) <= 2147483647; VAL [~c~0=0, ~x~0=0, ~y~0=0] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L14] ~x~0 := #t~nondet0; [L14] havoc #t~nondet0; [L15] havoc ~y~0; [L16] havoc ~c~0; [L18] ~y~0 := 0; [L19] ~c~0 := 0; VAL [~c~0=0, ~x~0=0, ~y~0=0] [L20-L27] assume !!(~c~0 % 256 < 8); VAL [~c~0=0, ~x~0=0, ~y~0=0] [L21] assert ~shiftLeft(1, ~c~0 % 256) <= 2147483647; VAL [~c~0=0, ~x~0=0, ~y~0=0] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L14] ~x~0 := #t~nondet0; [L14] havoc #t~nondet0; [L15] havoc ~y~0; [L16] havoc ~c~0; [L18] ~y~0 := 0; [L19] ~c~0 := 0; VAL [~c~0=0, ~x~0=0, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) VAL [~c~0=0, ~x~0=0, ~y~0=0] [L21] assert ~shiftLeft(1, ~c~0 % 256) <= 2147483647; VAL [~c~0=0, ~x~0=0, ~y~0=0] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L14] ~x~0 := #t~nondet0; [L14] havoc #t~nondet0; [L15] havoc ~y~0; [L16] havoc ~c~0; [L18] ~y~0 := 0; [L19] ~c~0 := 0; VAL [~c~0=0, ~x~0=0, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) VAL [~c~0=0, ~x~0=0, ~y~0=0] [L21] assert ~shiftLeft(1, ~c~0 % 256) <= 2147483647; VAL [~c~0=0, ~x~0=0, ~y~0=0] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L14] ~x~0 := #t~nondet0; [L14] havoc #t~nondet0; [L15] havoc ~y~0; [L16] havoc ~c~0; [L18] ~y~0 := 0; [L19] ~c~0 := 0; VAL [~c~0=0, ~x~0=0, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) VAL [~c~0=0, ~x~0=0, ~y~0=0] [L21] assert ~shiftLeft(1, ~c~0 % 256) <= 2147483647; VAL [~c~0=0, ~x~0=0, ~y~0=0] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L14] ~x~0 := #t~nondet0; [L14] havoc #t~nondet0; [L15] havoc ~y~0; [L16] havoc ~c~0; [L18] ~y~0 := 0; [L19] ~c~0 := 0; VAL [~c~0=0, ~x~0=0, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) VAL [~c~0=0, ~x~0=0, ~y~0=0] [L21] assert ~shiftLeft(1, ~c~0 % 256) <= 2147483647; VAL [~c~0=0, ~x~0=0, ~y~0=0] [L14] unsigned char x = __VERIFIER_nondet_uchar(); [L15] unsigned char y; [L16] unsigned char c; [L18] y = 0 [L19] c = 0 VAL [c=0, x=0, y=0] [L20] COND TRUE c < (unsigned char)8 VAL [c=0, x=0, y=0] [L21] ((unsigned char)1) << c VAL [c=0, x=0, y=0] ----- [2018-11-23 02:51:36,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:51:36 BoogieIcfgContainer [2018-11-23 02:51:36,242 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 02:51:36,242 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 02:51:36,242 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 02:51:36,242 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 02:51:36,243 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:51:36" (3/4) ... [2018-11-23 02:51:36,245 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 02:51:36,246 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 02:51:36,246 INFO L168 Benchmark]: Toolchain (without parser) took 597.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 958.2 MB in the beginning and 1.1 GB in the end (delta: -157.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 02:51:36,248 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 02:51:36,248 INFO L168 Benchmark]: CACSL2BoogieTranslator took 155.28 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 947.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 02:51:36,249 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.59 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 02:51:36,250 INFO L168 Benchmark]: Boogie Preprocessor took 18.36 ms. Allocated memory is still 1.0 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 02:51:36,251 INFO L168 Benchmark]: RCFGBuilder took 193.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -184.0 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-23 02:51:36,251 INFO L168 Benchmark]: TraceAbstraction took 206.26 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: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2018-11-23 02:51:36,252 INFO L168 Benchmark]: Witness Printer took 3.66 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. [2018-11-23 02:51:36,254 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 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 155.28 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 947.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.59 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.36 ms. Allocated memory is still 1.0 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 193.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -184.0 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 206.26 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: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Witness Printer took 3.66 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: 21]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of shiftLeft at line 21. Possible FailurePath: [L14] unsigned char x = __VERIFIER_nondet_uchar(); [L15] unsigned char y; [L16] unsigned char c; [L18] y = 0 [L19] c = 0 VAL [c=0, x=0, y=0] [L20] COND TRUE c < (unsigned char)8 VAL [c=0, x=0, y=0] [L21] ((unsigned char)1) << c VAL [c=0, x=0, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 30 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=30occurred 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, 7 NumberOfCodeBlocks, 7 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...