./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/signedintegeroverflow-regression/NoNegativeIntegerConstant.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8c6084a9-3bad-45da-bdfc-2ab8a4ab5ab0/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8c6084a9-3bad-45da-bdfc-2ab8a4ab5ab0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8c6084a9-3bad-45da-bdfc-2ab8a4ab5ab0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8c6084a9-3bad-45da-bdfc-2ab8a4ab5ab0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/signedintegeroverflow-regression/NoNegativeIntegerConstant.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8c6084a9-3bad-45da-bdfc-2ab8a4ab5ab0/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8c6084a9-3bad-45da-bdfc-2ab8a4ab5ab0/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 64bit --witnessprinter.graph.data.programhash a11cfeaad7bed3f9aca46452bbe027320dfd89ff ............................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 07:39:49,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 07:39:49,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 07:39:49,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 07:39:49,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 07:39:49,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 07:39:49,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 07:39:49,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 07:39:49,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 07:39:49,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 07:39:49,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 07:39:49,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 07:39:49,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 07:39:49,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 07:39:49,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 07:39:49,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 07:39:49,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 07:39:49,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 07:39:49,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 07:39:49,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 07:39:49,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 07:39:49,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 07:39:49,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 07:39:49,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 07:39:49,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 07:39:49,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 07:39:49,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 07:39:49,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 07:39:49,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 07:39:49,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 07:39:49,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 07:39:49,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 07:39:49,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 07:39:49,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 07:39:49,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 07:39:49,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 07:39:49,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 07:39:49,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 07:39:49,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 07:39:49,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 07:39:49,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 07:39:49,749 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8c6084a9-3bad-45da-bdfc-2ab8a4ab5ab0/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-12-09 07:39:49,765 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 07:39:49,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 07:39:49,766 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 07:39:49,766 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 07:39:49,774 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 07:39:49,775 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 07:39:49,775 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 07:39:49,775 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 07:39:49,775 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 07:39:49,775 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 07:39:49,775 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 07:39:49,775 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 07:39:49,775 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 07:39:49,776 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 07:39:49,776 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 07:39:49,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 07:39:49,776 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 07:39:49,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 07:39:49,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 07:39:49,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 07:39:49,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 07:39:49,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 07:39:49,777 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-09 07:39:49,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 07:39:49,777 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 07:39:49,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 07:39:49,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 07:39:49,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 07:39:49,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:39:49,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 07:39:49,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 07:39:49,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 07:39:49,778 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 07:39:49,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 07:39:49,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 07:39:49,778 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 07:39:49,778 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 07:39:49,779 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_8c6084a9-3bad-45da-bdfc-2ab8a4ab5ab0/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8c6084a9-3bad-45da-bdfc-2ab8a4ab5ab0/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a11cfeaad7bed3f9aca46452bbe027320dfd89ff [2020-12-09 07:39:49,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 07:39:49,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 07:39:49,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 07:39:49,989 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 07:39:49,990 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 07:39:49,990 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8c6084a9-3bad-45da-bdfc-2ab8a4ab5ab0/bin/utaipan/../../sv-benchmarks/c/signedintegeroverflow-regression/NoNegativeIntegerConstant.i [2020-12-09 07:39:50,038 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8c6084a9-3bad-45da-bdfc-2ab8a4ab5ab0/bin/utaipan/data/14a058346/ad7a6aebe8ac4dca95be6b95618abf2f/FLAG3b875cca9 [2020-12-09 07:39:50,433 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 07:39:50,434 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8c6084a9-3bad-45da-bdfc-2ab8a4ab5ab0/sv-benchmarks/c/signedintegeroverflow-regression/NoNegativeIntegerConstant.i [2020-12-09 07:39:50,440 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8c6084a9-3bad-45da-bdfc-2ab8a4ab5ab0/bin/utaipan/data/14a058346/ad7a6aebe8ac4dca95be6b95618abf2f/FLAG3b875cca9 [2020-12-09 07:39:50,450 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8c6084a9-3bad-45da-bdfc-2ab8a4ab5ab0/bin/utaipan/data/14a058346/ad7a6aebe8ac4dca95be6b95618abf2f [2020-12-09 07:39:50,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 07:39:50,453 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 07:39:50,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 07:39:50,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 07:39:50,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 07:39:50,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:39:50" (1/1) ... [2020-12-09 07:39:50,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e0a9191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:39:50, skipping insertion in model container [2020-12-09 07:39:50,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:39:50" (1/1) ... [2020-12-09 07:39:50,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 07:39:50,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 07:39:50,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:39:50,645 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 07:39:50,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:39:50,703 INFO L208 MainTranslator]: Completed translation [2020-12-09 07:39:50,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:39:50 WrapperNode [2020-12-09 07:39:50,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 07:39:50,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 07:39:50,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 07:39:50,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 07:39:50,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:39:50" (1/1) ... [2020-12-09 07:39:50,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:39:50" (1/1) ... [2020-12-09 07:39:50,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 07:39:50,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 07:39:50,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 07:39:50,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 07:39:50,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:39:50" (1/1) ... [2020-12-09 07:39:50,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:39:50" (1/1) ... [2020-12-09 07:39:50,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:39:50" (1/1) ... [2020-12-09 07:39:50,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:39:50" (1/1) ... [2020-12-09 07:39:50,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:39:50" (1/1) ... [2020-12-09 07:39:50,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:39:50" (1/1) ... [2020-12-09 07:39:50,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:39:50" (1/1) ... [2020-12-09 07:39:50,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 07:39:50,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 07:39:50,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 07:39:50,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 07:39:50,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:39:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c6084a9-3bad-45da-bdfc-2ab8a4ab5ab0/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 [2020-12-09 07:39:50,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 07:39:50,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 07:39:50,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 07:39:50,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 07:39:50,955 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 07:39:50,955 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-09 07:39:50,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:39:50 BoogieIcfgContainer [2020-12-09 07:39:50,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 07:39:50,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 07:39:50,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 07:39:50,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 07:39:50,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:39:50" (1/3) ... [2020-12-09 07:39:50,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eeda4f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:39:50, skipping insertion in model container [2020-12-09 07:39:50,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:39:50" (2/3) ... [2020-12-09 07:39:50,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eeda4f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:39:50, skipping insertion in model container [2020-12-09 07:39:50,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:39:50" (3/3) ... [2020-12-09 07:39:50,965 INFO L111 eAbstractionObserver]: Analyzing ICFG NoNegativeIntegerConstant.i [2020-12-09 07:39:50,986 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 07:39:50,988 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-12-09 07:39:50,999 INFO L253 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-12-09 07:39:51,020 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 07:39:51,020 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 07:39:51,020 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 07:39:51,020 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 07:39:51,021 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 07:39:51,021 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 07:39:51,021 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 07:39:51,021 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 07:39:51,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2 states. [2020-12-09 07:39:51,035 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 07:39:51,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 2 states. [2020-12-09 07:39:51,072 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 07:39:51,072 INFO L265 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-12-09 07:39:51,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:39:51 BoogieIcfgContainer [2020-12-09 07:39:51,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 07:39:51,078 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 07:39:51,078 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 07:39:51,078 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 07:39:51,078 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:39:50" (3/4) ... [2020-12-09 07:39:51,081 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 07:39:51,087 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 07:39:51,087 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 07:39:51,087 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 07:39:51,088 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 07:39:51,107 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8c6084a9-3bad-45da-bdfc-2ab8a4ab5ab0/bin/utaipan/witness.graphml [2020-12-09 07:39:51,107 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 07:39:51,109 INFO L168 Benchmark]: Toolchain (without parser) took 655.26 ms. Allocated memory is still 109.1 MB. Free memory was 83.3 MB in the beginning and 78.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. [2020-12-09 07:39:51,109 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 71.3 MB. Free memory was 47.7 MB in the beginning and 47.6 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:39:51,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.58 ms. Allocated memory is still 109.1 MB. Free memory was 83.0 MB in the beginning and 74.3 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 07:39:51,110 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.11 ms. Allocated memory is still 109.1 MB. Free memory was 74.3 MB in the beginning and 72.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:39:51,111 INFO L168 Benchmark]: Boogie Preprocessor took 13.38 ms. Allocated memory is still 109.1 MB. Free memory was 72.6 MB in the beginning and 71.6 MB in the end (delta: 930.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:39:51,111 INFO L168 Benchmark]: RCFGBuilder took 211.88 ms. Allocated memory is still 109.1 MB. Free memory was 71.6 MB in the beginning and 58.8 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 07:39:51,111 INFO L168 Benchmark]: TraceAbstraction took 118.43 ms. Allocated memory is still 109.1 MB. Free memory was 58.3 MB in the beginning and 81.2 MB in the end (delta: -22.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:39:51,112 INFO L168 Benchmark]: Witness Printer took 29.60 ms. Allocated memory is still 109.1 MB. Free memory was 81.2 MB in the beginning and 78.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:39:51,115 INFO L339 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 71.3 MB. Free memory was 47.7 MB in the beginning and 47.6 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 250.58 ms. Allocated memory is still 109.1 MB. Free memory was 83.0 MB in the beginning and 74.3 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 26.11 ms. Allocated memory is still 109.1 MB. Free memory was 74.3 MB in the beginning and 72.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 13.38 ms. Allocated memory is still 109.1 MB. Free memory was 72.6 MB in the beginning and 71.6 MB in the end (delta: 930.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 211.88 ms. Allocated memory is still 109.1 MB. Free memory was 71.6 MB in the beginning and 58.8 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 118.43 ms. Allocated memory is still 109.1 MB. Free memory was 58.3 MB in the beginning and 81.2 MB in the end (delta: -22.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 29.60 ms. Allocated memory is still 109.1 MB. Free memory was 81.2 MB in the beginning and 78.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 2 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2occurred 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: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...