./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 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0ec23e8c-4c1e-492b-8b92-0d6e9eeee1ba/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0ec23e8c-4c1e-492b-8b92-0d6e9eeee1ba/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0ec23e8c-4c1e-492b-8b92-0d6e9eeee1ba/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0ec23e8c-4c1e-492b-8b92-0d6e9eeee1ba/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_0ec23e8c-4c1e-492b-8b92-0d6e9eeee1ba/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0ec23e8c-4c1e-492b-8b92-0d6e9eeee1ba/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_0ec23e8c-4c1e-492b-8b92-0d6e9eeee1ba/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 0.1.23-5842f4b [2018-11-18 10:52:29,714 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 10:52:29,716 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 10:52:29,724 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 10:52:29,725 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 10:52:29,725 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 10:52:29,726 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 10:52:29,728 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 10:52:29,729 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 10:52:29,729 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 10:52:29,730 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 10:52:29,730 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 10:52:29,731 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 10:52:29,732 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 10:52:29,733 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 10:52:29,734 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 10:52:29,734 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 10:52:29,736 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 10:52:29,737 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 10:52:29,738 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 10:52:29,739 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 10:52:29,740 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 10:52:29,742 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 10:52:29,742 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 10:52:29,742 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 10:52:29,743 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 10:52:29,744 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 10:52:29,744 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 10:52:29,745 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 10:52:29,746 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 10:52:29,746 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 10:52:29,747 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 10:52:29,747 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 10:52:29,747 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 10:52:29,748 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 10:52:29,748 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 10:52:29,749 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0ec23e8c-4c1e-492b-8b92-0d6e9eeee1ba/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2018-11-18 10:52:29,761 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 10:52:29,761 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 10:52:29,762 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 10:52:29,762 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 10:52:29,762 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 10:52:29,762 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 10:52:29,762 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 10:52:29,762 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 10:52:29,763 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 10:52:29,763 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 10:52:29,763 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 10:52:29,763 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 10:52:29,763 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 10:52:29,764 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 10:52:29,764 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 10:52:29,764 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 10:52:29,764 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 10:52:29,765 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 10:52:29,765 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 10:52:29,765 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 10:52:29,765 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 10:52:29,765 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 10:52:29,765 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 10:52:29,766 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 10:52:29,766 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 10:52:29,766 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 10:52:29,766 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 10:52:29,766 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 10:52:29,766 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 10:52:29,767 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 10:52:29,767 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 10:52:29,767 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:52:29,767 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 10:52:29,767 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 10:52:29,767 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 10:52:29,768 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 10:52:29,768 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 10:52:29,768 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 10:52:29,768 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 10:52:29,768 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_0ec23e8c-4c1e-492b-8b92-0d6e9eeee1ba/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 [2018-11-18 10:52:29,792 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 10:52:29,801 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 10:52:29,804 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 10:52:29,805 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 10:52:29,805 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 10:52:29,806 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0ec23e8c-4c1e-492b-8b92-0d6e9eeee1ba/bin-2019/utaipan/../../sv-benchmarks/c/bitvector/num_conversion_1_true-unreach-call_true-no-overflow.i [2018-11-18 10:52:29,845 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0ec23e8c-4c1e-492b-8b92-0d6e9eeee1ba/bin-2019/utaipan/data/138d0a433/a2253f1e45e946f5ad701984bb98cf6c/FLAG7f5efa549 [2018-11-18 10:52:30,187 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 10:52:30,188 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0ec23e8c-4c1e-492b-8b92-0d6e9eeee1ba/sv-benchmarks/c/bitvector/num_conversion_1_true-unreach-call_true-no-overflow.i [2018-11-18 10:52:30,192 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0ec23e8c-4c1e-492b-8b92-0d6e9eeee1ba/bin-2019/utaipan/data/138d0a433/a2253f1e45e946f5ad701984bb98cf6c/FLAG7f5efa549 [2018-11-18 10:52:30,611 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0ec23e8c-4c1e-492b-8b92-0d6e9eeee1ba/bin-2019/utaipan/data/138d0a433/a2253f1e45e946f5ad701984bb98cf6c [2018-11-18 10:52:30,613 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 10:52:30,615 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 10:52:30,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 10:52:30,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 10:52:30,620 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 10:52:30,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:52:30" (1/1) ... [2018-11-18 10:52:30,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44e8c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:30, skipping insertion in model container [2018-11-18 10:52:30,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:52:30" (1/1) ... [2018-11-18 10:52:30,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 10:52:30,645 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 10:52:30,758 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:52:30,761 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 10:52:30,772 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:52:30,782 INFO L195 MainTranslator]: Completed translation [2018-11-18 10:52:30,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:30 WrapperNode [2018-11-18 10:52:30,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 10:52:30,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 10:52:30,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 10:52:30,784 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 10:52:30,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:30" (1/1) ... [2018-11-18 10:52:30,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:30" (1/1) ... [2018-11-18 10:52:30,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 10:52:30,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 10:52:30,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 10:52:30,797 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 10:52:30,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:30" (1/1) ... [2018-11-18 10:52:30,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:30" (1/1) ... [2018-11-18 10:52:30,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:30" (1/1) ... [2018-11-18 10:52:30,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:30" (1/1) ... [2018-11-18 10:52:30,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:30" (1/1) ... [2018-11-18 10:52:30,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:30" (1/1) ... [2018-11-18 10:52:30,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:30" (1/1) ... [2018-11-18 10:52:30,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 10:52:30,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 10:52:30,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 10:52:30,813 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 10:52:30,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ec23e8c-4c1e-492b-8b92-0d6e9eeee1ba/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 10:52:30,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 10:52:30,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 10:52:30,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 10:52:30,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 10:52:30,897 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 10:52:30,897 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 10:52:30,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 10:52:30,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 10:52:31,012 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 10:52:31,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:52:31 BoogieIcfgContainer [2018-11-18 10:52:31,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 10:52:31,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 10:52:31,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 10:52:31,016 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 10:52:31,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:52:30" (1/3) ... [2018-11-18 10:52:31,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0b46c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:52:31, skipping insertion in model container [2018-11-18 10:52:31,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:30" (2/3) ... [2018-11-18 10:52:31,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0b46c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:52:31, skipping insertion in model container [2018-11-18 10:52:31,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:52:31" (3/3) ... [2018-11-18 10:52:31,019 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_1_true-unreach-call_true-no-overflow.i [2018-11-18 10:52:31,028 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 10:52:31,038 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-18 10:52:31,051 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-18 10:52:31,079 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 10:52:31,079 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 10:52:31,079 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 10:52:31,079 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 10:52:31,079 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 10:52:31,079 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 10:52:31,080 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 10:52:31,080 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 10:52:31,093 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-11-18 10:52:31,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-18 10:52:31,097 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:52:31,098 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:52:31,099 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 10:52:31,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:52:31,103 INFO L82 PathProgramCache]: Analyzing trace with hash -830409546, now seen corresponding path program 1 times [2018-11-18 10:52:31,104 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:52:31,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:52:31,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:52:31,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:52:31,139 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:52:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:52:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:52:31,173 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 10:52:31,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 10:52:31 BoogieIcfgContainer [2018-11-18 10:52:31,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 10:52:31,190 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 10:52:31,190 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 10:52:31,190 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 10:52:31,190 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:52:31" (3/4) ... [2018-11-18 10:52:31,193 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 10:52:31,193 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 10:52:31,194 INFO L168 Benchmark]: Toolchain (without parser) took 580.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -173.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:52:31,195 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. [2018-11-18 10:52:31,196 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.54 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:52:31,196 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.26 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:52:31,197 INFO L168 Benchmark]: Boogie Preprocessor took 15.46 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:52:31,197 INFO L168 Benchmark]: RCFGBuilder took 200.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -200.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-11-18 10:52:31,197 INFO L168 Benchmark]: TraceAbstraction took 176.13 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: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-11-18 10:52:31,198 INFO L168 Benchmark]: Witness Printer took 3.65 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 10:52:31,201 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 167.54 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.26 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.46 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 200.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -200.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 176.13 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: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * Witness Printer took 3.65 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...