./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.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 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f0ca5298-71c0-4dea-acbc-b493c765b1c1/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f0ca5298-71c0-4dea-acbc-b493c765b1c1/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f0ca5298-71c0-4dea-acbc-b493c765b1c1/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f0ca5298-71c0-4dea-acbc-b493c765b1c1/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_f0ca5298-71c0-4dea-acbc-b493c765b1c1/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f0ca5298-71c0-4dea-acbc-b493c765b1c1/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_f0ca5298-71c0-4dea-acbc-b493c765b1c1/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 [2018-11-10 12:00:51,042 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 12:00:51,043 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 12:00:51,054 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 12:00:51,054 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 12:00:51,055 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 12:00:51,056 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 12:00:51,057 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 12:00:51,059 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 12:00:51,059 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 12:00:51,060 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 12:00:51,060 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 12:00:51,061 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 12:00:51,062 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 12:00:51,063 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 12:00:51,063 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 12:00:51,064 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 12:00:51,066 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 12:00:51,067 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 12:00:51,069 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 12:00:51,069 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 12:00:51,070 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 12:00:51,072 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 12:00:51,073 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 12:00:51,073 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 12:00:51,074 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 12:00:51,075 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 12:00:51,075 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 12:00:51,076 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 12:00:51,077 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 12:00:51,077 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 12:00:51,078 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 12:00:51,078 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 12:00:51,078 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 12:00:51,079 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 12:00:51,079 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 12:00:51,080 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f0ca5298-71c0-4dea-acbc-b493c765b1c1/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2018-11-10 12:00:51,092 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 12:00:51,092 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 12:00:51,093 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 12:00:51,093 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 12:00:51,093 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 12:00:51,094 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 12:00:51,094 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 12:00:51,094 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 12:00:51,094 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 12:00:51,094 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 12:00:51,094 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 12:00:51,095 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 12:00:51,095 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 12:00:51,095 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 12:00:51,096 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 12:00:51,096 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 12:00:51,096 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 12:00:51,096 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 12:00:51,096 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 12:00:51,096 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 12:00:51,096 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-10 12:00:51,097 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 12:00:51,097 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 12:00:51,097 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 12:00:51,097 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 12:00:51,097 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 12:00:51,098 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 12:00:51,098 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 12:00:51,098 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 12:00:51,098 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 12:00:51,098 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 12:00:51,098 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 12:00:51,098 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 12:00:51,099 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 12:00:51,099 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 12:00:51,099 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 12:00:51,099 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_f0ca5298-71c0-4dea-acbc-b493c765b1c1/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 [2018-11-10 12:00:51,128 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 12:00:51,139 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 12:00:51,142 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 12:00:51,144 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 12:00:51,144 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 12:00:51,145 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f0ca5298-71c0-4dea-acbc-b493c765b1c1/bin-2019/utaipan/../../sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-10 12:00:51,201 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f0ca5298-71c0-4dea-acbc-b493c765b1c1/bin-2019/utaipan/data/44c420e6f/3301aac267a946d3b98ea7175ca30068/FLAGe5ad13b3f [2018-11-10 12:00:51,567 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 12:00:51,567 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f0ca5298-71c0-4dea-acbc-b493c765b1c1/sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-10 12:00:51,572 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f0ca5298-71c0-4dea-acbc-b493c765b1c1/bin-2019/utaipan/data/44c420e6f/3301aac267a946d3b98ea7175ca30068/FLAGe5ad13b3f [2018-11-10 12:00:51,583 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f0ca5298-71c0-4dea-acbc-b493c765b1c1/bin-2019/utaipan/data/44c420e6f/3301aac267a946d3b98ea7175ca30068 [2018-11-10 12:00:51,586 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 12:00:51,587 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 12:00:51,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 12:00:51,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 12:00:51,592 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 12:00:51,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:00:51" (1/1) ... [2018-11-10 12:00:51,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@680a2912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:00:51, skipping insertion in model container [2018-11-10 12:00:51,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:00:51" (1/1) ... [2018-11-10 12:00:51,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 12:00:51,617 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 12:00:51,744 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 12:00:51,747 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 12:00:51,760 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 12:00:51,774 INFO L193 MainTranslator]: Completed translation [2018-11-10 12:00:51,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:00:51 WrapperNode [2018-11-10 12:00:51,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 12:00:51,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 12:00:51,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 12:00:51,775 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 12:00:51,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:00:51" (1/1) ... [2018-11-10 12:00:51,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:00:51" (1/1) ... [2018-11-10 12:00:51,794 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 12:00:51,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 12:00:51,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 12:00:51,794 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 12:00:51,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:00:51" (1/1) ... [2018-11-10 12:00:51,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:00:51" (1/1) ... [2018-11-10 12:00:51,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:00:51" (1/1) ... [2018-11-10 12:00:51,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:00:51" (1/1) ... [2018-11-10 12:00:51,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:00:51" (1/1) ... [2018-11-10 12:00:51,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:00:51" (1/1) ... [2018-11-10 12:00:51,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:00:51" (1/1) ... [2018-11-10 12:00:51,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 12:00:51,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 12:00:51,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 12:00:51,811 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 12:00:51,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:00:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0ca5298-71c0-4dea-acbc-b493c765b1c1/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 [2018-11-10 12:00:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 12:00:51,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 12:00:51,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 12:00:51,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 12:00:51,898 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 12:00:51,898 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 12:00:51,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 12:00:51,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 12:00:52,039 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 12:00:52,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:00:52 BoogieIcfgContainer [2018-11-10 12:00:52,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 12:00:52,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 12:00:52,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 12:00:52,042 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 12:00:52,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 12:00:51" (1/3) ... [2018-11-10 12:00:52,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53619339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:00:52, skipping insertion in model container [2018-11-10 12:00:52,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:00:51" (2/3) ... [2018-11-10 12:00:52,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53619339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:00:52, skipping insertion in model container [2018-11-10 12:00:52,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:00:52" (3/3) ... [2018-11-10 12:00:52,045 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-10 12:00:52,052 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 12:00:52,057 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-10 12:00:52,070 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-10 12:00:52,102 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 12:00:52,102 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 12:00:52,102 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 12:00:52,102 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 12:00:52,102 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 12:00:52,102 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 12:00:52,102 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 12:00:52,103 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 12:00:52,119 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-11-10 12:00:52,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-10 12:00:52,123 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:00:52,124 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:00:52,126 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:00:52,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:00:52,131 INFO L82 PathProgramCache]: Analyzing trace with hash -830409546, now seen corresponding path program 1 times [2018-11-10 12:00:52,133 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 12:00:52,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:00:52,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:00:52,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:00:52,170 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 12:00:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 12:00:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 12:00:52,209 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 12:00:52,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 12:00:52 BoogieIcfgContainer [2018-11-10 12:00:52,226 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 12:00:52,226 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 12:00:52,227 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 12:00:52,227 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 12:00:52,227 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:00:52" (3/4) ... [2018-11-10 12:00:52,230 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 12:00:52,230 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 12:00:52,231 INFO L168 Benchmark]: Toolchain (without parser) took 644.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 959.3 MB in the beginning and 1.1 GB in the end (delta: -168.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:00:52,232 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:00:52,232 INFO L168 Benchmark]: CACSL2BoogieTranslator took 187.02 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 12:00:52,233 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.78 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:00:52,233 INFO L168 Benchmark]: Boogie Preprocessor took 15.98 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 12:00:52,234 INFO L168 Benchmark]: RCFGBuilder took 229.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -196.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-10 12:00:52,234 INFO L168 Benchmark]: TraceAbstraction took 186.16 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: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. [2018-11-10 12:00:52,235 INFO L168 Benchmark]: Witness Printer took 3.53 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. [2018-11-10 12:00:52,238 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 187.02 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.78 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.98 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 229.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -196.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 186.16 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: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.53 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, 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...