./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/num_conversion_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_127bd138-0b6b-4266-af6f-b39097032e8f/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_127bd138-0b6b-4266-af6f-b39097032e8f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_127bd138-0b6b-4266-af6f-b39097032e8f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_127bd138-0b6b-4266-af6f-b39097032e8f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_127bd138-0b6b-4266-af6f-b39097032e8f/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_127bd138-0b6b-4266-af6f-b39097032e8f/bin/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 dc393f6c4862d8369d85fc8f5aceb831c4046350 ....................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_127bd138-0b6b-4266-af6f-b39097032e8f/bin/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 0.1.25-f470102 [2019-12-07 20:13:11,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:13:11,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:13:11,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:13:11,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:13:11,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:13:11,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:13:11,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:13:11,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:13:11,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:13:11,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:13:11,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:13:11,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:13:11,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:13:11,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:13:11,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:13:11,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:13:11,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:13:11,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:13:11,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:13:11,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:13:11,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:13:11,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:13:11,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:13:11,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:13:11,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:13:11,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:13:11,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:13:11,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:13:11,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:13:11,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:13:11,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:13:11,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:13:11,880 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:13:11,881 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:13:11,881 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:13:11,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:13:11,882 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:13:11,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:13:11,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:13:11,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:13:11,883 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_127bd138-0b6b-4266-af6f-b39097032e8f/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2019-12-07 20:13:11,893 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:13:11,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:13:11,893 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:13:11,893 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:13:11,894 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:13:11,894 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:13:11,894 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 20:13:11,894 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:13:11,894 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:13:11,894 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 20:13:11,894 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 20:13:11,894 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:13:11,894 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 20:13:11,895 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 20:13:11,895 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 20:13:11,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:13:11,895 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 20:13:11,895 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 20:13:11,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 20:13:11,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 20:13:11,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:13:11,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 20:13:11,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:13:11,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 20:13:11,896 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 20:13:11,896 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 20:13:11,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 20:13:11,896 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:13:11,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 20:13:11,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:13:11,897 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:13:11,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:13:11,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:13:11,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:13:11,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:13:11,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 20:13:11,898 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 20:13:11,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 20:13:11,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 20:13:11,898 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:13:11,898 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:13:11,898 INFO L138 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/run_dir_127bd138-0b6b-4266-af6f-b39097032e8f/bin/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 -> dc393f6c4862d8369d85fc8f5aceb831c4046350 [2019-12-07 20:13:11,998 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:13:12,006 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:13:12,008 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:13:12,009 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:13:12,009 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:13:12,010 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_127bd138-0b6b-4266-af6f-b39097032e8f/bin/utaipan/../../sv-benchmarks/c/bitvector/num_conversion_1.c [2019-12-07 20:13:12,048 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_127bd138-0b6b-4266-af6f-b39097032e8f/bin/utaipan/data/e995595b9/cc4c3b7118514dbf88edec2e118476f5/FLAG5c9b06443 [2019-12-07 20:13:12,372 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:13:12,373 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_127bd138-0b6b-4266-af6f-b39097032e8f/sv-benchmarks/c/bitvector/num_conversion_1.c [2019-12-07 20:13:12,377 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_127bd138-0b6b-4266-af6f-b39097032e8f/bin/utaipan/data/e995595b9/cc4c3b7118514dbf88edec2e118476f5/FLAG5c9b06443 [2019-12-07 20:13:12,387 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_127bd138-0b6b-4266-af6f-b39097032e8f/bin/utaipan/data/e995595b9/cc4c3b7118514dbf88edec2e118476f5 [2019-12-07 20:13:12,389 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:13:12,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:13:12,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:13:12,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:13:12,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:13:12,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:13:12" (1/1) ... [2019-12-07 20:13:12,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e3d67c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:12, skipping insertion in model container [2019-12-07 20:13:12,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:13:12" (1/1) ... [2019-12-07 20:13:12,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:13:12,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:13:12,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:13:12,557 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 20:13:12,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:13:12,576 INFO L208 MainTranslator]: Completed translation [2019-12-07 20:13:12,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:12 WrapperNode [2019-12-07 20:13:12,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:13:12,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 20:13:12,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 20:13:12,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 20:13:12,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:12" (1/1) ... [2019-12-07 20:13:12,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:12" (1/1) ... [2019-12-07 20:13:12,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 20:13:12,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 20:13:12,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 20:13:12,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 20:13:12,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:12" (1/1) ... [2019-12-07 20:13:12,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:12" (1/1) ... [2019-12-07 20:13:12,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:12" (1/1) ... [2019-12-07 20:13:12,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:12" (1/1) ... [2019-12-07 20:13:12,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:12" (1/1) ... [2019-12-07 20:13:12,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:12" (1/1) ... [2019-12-07 20:13:12,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:12" (1/1) ... [2019-12-07 20:13:12,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 20:13:12,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 20:13:12,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 20:13:12,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 20:13:12,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_127bd138-0b6b-4266-af6f-b39097032e8f/bin/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 [2019-12-07 20:13:12,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 20:13:12,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 20:13:12,787 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 20:13:12,787 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 20:13:12,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:13:12 BoogieIcfgContainer [2019-12-07 20:13:12,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 20:13:12,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 20:13:12,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 20:13:12,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 20:13:12,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 08:13:12" (1/3) ... [2019-12-07 20:13:12,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71808616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:13:12, skipping insertion in model container [2019-12-07 20:13:12,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:12" (2/3) ... [2019-12-07 20:13:12,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71808616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:13:12, skipping insertion in model container [2019-12-07 20:13:12,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:13:12" (3/3) ... [2019-12-07 20:13:12,792 INFO L109 eAbstractionObserver]: Analyzing ICFG num_conversion_1.c [2019-12-07 20:13:12,798 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 20:13:12,802 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-12-07 20:13:12,809 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-07 20:13:12,823 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 20:13:12,823 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 20:13:12,824 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 20:13:12,824 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 20:13:12,824 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 20:13:12,824 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 20:13:12,824 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 20:13:12,824 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 20:13:12,834 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-12-07 20:13:12,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 20:13:12,837 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:13:12,837 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 20:13:12,838 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 20:13:12,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:13:12,843 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-12-07 20:13:12,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:13:12,850 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525330951] [2019-12-07 20:13:12,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:13:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 20:13:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 20:13:12,916 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 20:13:12,916 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 20:13:12,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 08:13:12 BoogieIcfgContainer [2019-12-07 20:13:12,926 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 20:13:12,927 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 20:13:12,927 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 20:13:12,927 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 20:13:12,927 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:13:12" (3/4) ... [2019-12-07 20:13:12,929 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 20:13:12,929 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 20:13:12,931 INFO L168 Benchmark]: Toolchain (without parser) took 540.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 938.8 MB in the beginning and 1.1 GB in the end (delta: -120.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:13:12,932 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 955.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:13:12,932 INFO L168 Benchmark]: CACSL2BoogieTranslator took 185.70 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 938.8 MB in the beginning and 1.1 GB in the end (delta: -153.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 20:13:12,932 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.83 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:13:12,933 INFO L168 Benchmark]: Boogie Preprocessor took 12.32 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:13:12,933 INFO L168 Benchmark]: RCFGBuilder took 178.20 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-12-07 20:13:12,934 INFO L168 Benchmark]: TraceAbstraction took 138.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 20:13:12,934 INFO L168 Benchmark]: Witness Printer took 2.83 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:13:12,936 INFO L335 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 955.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 185.70 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 938.8 MB in the beginning and 1.1 GB in the end (delta: -153.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.83 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.32 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 178.20 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 138.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 2.83 ms. Allocated memory is still 1.1 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 [L21] COND TRUE c < (unsigned char)8 [L22] ((unsigned char)1) << c - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 6 error locations. Result: UNSAFE, OverallTime: 0.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...