./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector-regression/implicitunsignedconversion-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4edf13f3-1361-4bff-b653-0674a03d7579/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_4edf13f3-1361-4bff-b653-0674a03d7579/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4edf13f3-1361-4bff-b653-0674a03d7579/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4edf13f3-1361-4bff-b653-0674a03d7579/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector-regression/implicitunsignedconversion-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4edf13f3-1361-4bff-b653-0674a03d7579/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4edf13f3-1361-4bff-b653-0674a03d7579/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 30aae13da2995f6cf7e0a5685beedb709cfcbffa ................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:39:57,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:39:57,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:39:57,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:39:57,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:39:57,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:39:57,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:39:57,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:39:57,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:39:57,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:39:57,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:39:57,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:39:57,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:39:57,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:39:57,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:39:57,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:39:57,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:39:57,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:39:57,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:39:57,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:39:57,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:39:57,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:39:57,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:39:57,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:39:57,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:39:57,696 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:39:57,696 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:39:57,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:39:57,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:39:57,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:39:57,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:39:57,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:39:57,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:39:57,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:39:57,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:39:57,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:39:57,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:39:57,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:39:57,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:39:57,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:39:57,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:39:57,707 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4edf13f3-1361-4bff-b653-0674a03d7579/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:39:57,732 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:39:57,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:39:57,743 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:39:57,743 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:39:57,743 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:39:57,744 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:39:57,744 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:39:57,744 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:39:57,744 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:39:57,744 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:39:57,745 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:39:57,745 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:39:57,745 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:39:57,745 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:39:57,746 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:39:57,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:39:57,746 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:39:57,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:39:57,748 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:39:57,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:39:57,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:39:57,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:39:57,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:39:57,749 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:39:57,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:39:57,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:39:57,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:39:57,750 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:39:57,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:39:57,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:39:57,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:39:57,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:39:57,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:39:57,751 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:39:57,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:39:57,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:39:57,752 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:39:57,752 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_4edf13f3-1361-4bff-b653-0674a03d7579/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 ! call(__VERIFIER_error())) ) 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 -> 30aae13da2995f6cf7e0a5685beedb709cfcbffa [2019-11-26 02:39:57,927 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:39:57,937 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:39:57,939 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:39:57,940 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:39:57,941 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:39:57,941 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4edf13f3-1361-4bff-b653-0674a03d7579/bin/utaipan/../../sv-benchmarks/c/bitvector-regression/implicitunsignedconversion-2.c [2019-11-26 02:39:57,994 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4edf13f3-1361-4bff-b653-0674a03d7579/bin/utaipan/data/7f5e6268c/551d990511224c8da8b9b11828c86dc5/FLAG6659ba611 [2019-11-26 02:39:58,388 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:39:58,389 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4edf13f3-1361-4bff-b653-0674a03d7579/sv-benchmarks/c/bitvector-regression/implicitunsignedconversion-2.c [2019-11-26 02:39:58,394 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4edf13f3-1361-4bff-b653-0674a03d7579/bin/utaipan/data/7f5e6268c/551d990511224c8da8b9b11828c86dc5/FLAG6659ba611 [2019-11-26 02:39:58,787 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4edf13f3-1361-4bff-b653-0674a03d7579/bin/utaipan/data/7f5e6268c/551d990511224c8da8b9b11828c86dc5 [2019-11-26 02:39:58,791 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:39:58,792 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:39:58,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:39:58,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:39:58,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:39:58,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:39:58" (1/1) ... [2019-11-26 02:39:58,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c238579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:58, skipping insertion in model container [2019-11-26 02:39:58,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:39:58" (1/1) ... [2019-11-26 02:39:58,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:39:58,826 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:39:58,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:39:58,986 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:39:59,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:39:59,066 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:39:59,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:59 WrapperNode [2019-11-26 02:39:59,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:39:59,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:39:59,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:39:59,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:39:59,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:59" (1/1) ... [2019-11-26 02:39:59,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:59" (1/1) ... [2019-11-26 02:39:59,098 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:39:59,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:39:59,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:39:59,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:39:59,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:59" (1/1) ... [2019-11-26 02:39:59,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:59" (1/1) ... [2019-11-26 02:39:59,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:59" (1/1) ... [2019-11-26 02:39:59,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:59" (1/1) ... [2019-11-26 02:39:59,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:59" (1/1) ... [2019-11-26 02:39:59,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:59" (1/1) ... [2019-11-26 02:39:59,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:59" (1/1) ... [2019-11-26 02:39:59,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:39:59,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:39:59,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:39:59,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:39:59,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4edf13f3-1361-4bff-b653-0674a03d7579/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 [2019-11-26 02:39:59,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:39:59,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:39:59,345 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:39:59,346 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-26 02:39:59,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:39:59 BoogieIcfgContainer [2019-11-26 02:39:59,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:39:59,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:39:59,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:39:59,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:39:59,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:39:58" (1/3) ... [2019-11-26 02:39:59,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b36c64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:39:59, skipping insertion in model container [2019-11-26 02:39:59,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:59" (2/3) ... [2019-11-26 02:39:59,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b36c64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:39:59, skipping insertion in model container [2019-11-26 02:39:59,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:39:59" (3/3) ... [2019-11-26 02:39:59,360 INFO L109 eAbstractionObserver]: Analyzing ICFG implicitunsignedconversion-2.c [2019-11-26 02:39:59,369 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:39:59,376 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:39:59,397 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:39:59,428 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:39:59,429 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:39:59,429 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:39:59,429 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:39:59,429 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:39:59,429 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:39:59,430 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:39:59,430 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:39:59,448 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-11-26 02:39:59,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-26 02:39:59,454 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:39:59,455 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-26 02:39:59,455 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:39:59,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:39:59,461 INFO L82 PathProgramCache]: Analyzing trace with hash 30884, now seen corresponding path program 1 times [2019-11-26 02:39:59,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:39:59,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365060175] [2019-11-26 02:39:59,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:39:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:39:59,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:39:59,750 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365060175] [2019-11-26 02:39:59,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:39:59,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:39:59,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666147256] [2019-11-26 02:39:59,757 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:39:59,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:39:59,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:39:59,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:39:59,772 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2019-11-26 02:39:59,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:39:59,795 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2019-11-26 02:39:59,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:39:59,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-26 02:39:59,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:39:59,805 INFO L225 Difference]: With dead ends: 8 [2019-11-26 02:39:59,806 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:39:59,826 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:39:59,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:39:59,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:39:59,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:39:59,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:39:59,846 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3 [2019-11-26 02:39:59,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:39:59,847 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:39:59,847 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:39:59,847 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:39:59,847 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:39:59,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:39:59,883 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:39:59,883 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:39:59,883 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-11-26 02:39:59,883 INFO L440 ceAbstractionStarter]: At program point L13(lines 3 14) the Hoare annotation is: (let ((.cse0 (div ULTIMATE.start_main_~minus_one~0 4294967296))) (and (<= ULTIMATE.start_main_~plus_one~0 (+ ULTIMATE.start_main_~minus_one~0 2)) (< .cse0 (div ULTIMATE.start_main_~plus_one~0 4294967296)) (<= (+ .cse0 1) 0))) [2019-11-26 02:39:59,884 INFO L440 ceAbstractionStarter]: At program point L8(lines 3 14) the Hoare annotation is: false [2019-11-26 02:39:59,884 INFO L444 ceAbstractionStarter]: For program point L7(lines 7 9) no Hoare annotation was computed. [2019-11-26 02:39:59,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:39:59 BoogieIcfgContainer [2019-11-26 02:39:59,898 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:39:59,898 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:39:59,898 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:39:59,899 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:39:59,899 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:39:59" (3/4) ... [2019-11-26 02:39:59,902 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:39:59,911 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-26 02:39:59,912 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-26 02:39:59,943 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4edf13f3-1361-4bff-b653-0674a03d7579/bin/utaipan/witness.graphml [2019-11-26 02:39:59,943 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:39:59,945 INFO L168 Benchmark]: Toolchain (without parser) took 1152.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 948.8 MB in the beginning and 1.1 GB in the end (delta: -139.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:39:59,945 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:39:59,947 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 948.8 MB in the beginning and 1.1 GB in the end (delta: -183.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:39:59,948 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.07 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:39:59,948 INFO L168 Benchmark]: Boogie Preprocessor took 19.70 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. [2019-11-26 02:39:59,949 INFO L168 Benchmark]: RCFGBuilder took 227.92 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:39:59,949 INFO L168 Benchmark]: TraceAbstraction took 550.01 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: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:39:59,950 INFO L168 Benchmark]: Witness Printer took 45.05 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. [2019-11-26 02:39:59,953 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 269.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 948.8 MB in the beginning and 1.1 GB in the end (delta: -183.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.07 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.70 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. * RCFGBuilder took 227.92 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 550.01 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: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * Witness Printer took 45.05 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: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: (plus_one <= minus_one + 2 && minus_one / 4294967296 < plus_one / 4294967296) && minus_one / 4294967296 + 1 <= 0 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 2 SDtfs, 2 SDslu, 0 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 21 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 42 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 proved your program to be correct! Received shutdown request...