./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/joey.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows 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_d10b03b7-a8e0-4d36-8d4c-d332e02ded4d/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d10b03b7-a8e0-4d36-8d4c-d332e02ded4d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d10b03b7-a8e0-4d36-8d4c-d332e02ded4d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d10b03b7-a8e0-4d36-8d4c-d332e02ded4d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/joey.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d10b03b7-a8e0-4d36-8d4c-d332e02ded4d/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d10b03b7-a8e0-4d36-8d4c-d332e02ded4d/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 6360f720317c1229a4bb277806239106bfb4e5c0 ........................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:42:29,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:42:29,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:42:29,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:42:29,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:42:29,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:42:29,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:42:29,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:42:29,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:42:29,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:42:29,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:42:29,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:42:29,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:42:29,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:42:29,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:42:29,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:42:29,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:42:29,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:42:29,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:42:29,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:42:29,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:42:29,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:42:29,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:42:29,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:42:29,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:42:29,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:42:29,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:42:29,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:42:29,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:42:29,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:42:29,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:42:29,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:42:29,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:42:29,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:42:29,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:42:29,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:42:29,975 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:42:29,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:42:29,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:42:29,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:42:29,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:42:29,978 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d10b03b7-a8e0-4d36-8d4c-d332e02ded4d/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-11-26 02:42:29,998 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:42:29,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:42:29,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:42:30,000 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:42:30,000 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:42:30,000 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:42:30,000 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:42:30,001 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:42:30,001 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:42:30,001 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:42:30,001 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:42:30,001 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:42:30,002 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:42:30,002 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:42:30,002 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:42:30,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:42:30,003 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:42:30,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:42:30,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:42:30,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:42:30,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:42:30,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:42:30,004 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-26 02:42:30,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:42:30,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:42:30,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:42:30,005 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:42:30,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:42:30,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:42:30,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:42:30,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:42:30,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:42:30,006 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:42:30,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:42:30,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:42:30,007 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:42:30,007 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_d10b03b7-a8e0-4d36-8d4c-d332e02ded4d/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 -> 6360f720317c1229a4bb277806239106bfb4e5c0 [2019-11-26 02:42:30,154 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:42:30,167 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:42:30,170 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:42:30,172 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:42:30,173 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:42:30,173 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d10b03b7-a8e0-4d36-8d4c-d332e02ded4d/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/joey.c [2019-11-26 02:42:30,232 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d10b03b7-a8e0-4d36-8d4c-d332e02ded4d/bin/utaipan/data/1cf87a97b/02f98d69f3094859bd8506ddd3e0d104/FLAG2014e1e12 [2019-11-26 02:42:30,601 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:42:30,602 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d10b03b7-a8e0-4d36-8d4c-d332e02ded4d/sv-benchmarks/c/termination-crafted-lit/joey.c [2019-11-26 02:42:30,607 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d10b03b7-a8e0-4d36-8d4c-d332e02ded4d/bin/utaipan/data/1cf87a97b/02f98d69f3094859bd8506ddd3e0d104/FLAG2014e1e12 [2019-11-26 02:42:30,617 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d10b03b7-a8e0-4d36-8d4c-d332e02ded4d/bin/utaipan/data/1cf87a97b/02f98d69f3094859bd8506ddd3e0d104 [2019-11-26 02:42:30,619 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:42:30,620 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:42:30,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:42:30,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:42:30,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:42:30,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:42:30" (1/1) ... [2019-11-26 02:42:30,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e94434d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:30, skipping insertion in model container [2019-11-26 02:42:30,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:42:30" (1/1) ... [2019-11-26 02:42:30,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:42:30,642 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:42:30,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:42:30,824 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:42:30,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:42:30,914 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:42:30,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:30 WrapperNode [2019-11-26 02:42:30,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:42:30,916 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:42:30,916 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:42:30,916 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:42:30,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:30" (1/1) ... [2019-11-26 02:42:30,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:30" (1/1) ... [2019-11-26 02:42:30,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:42:30,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:42:30,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:42:30,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:42:30,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:30" (1/1) ... [2019-11-26 02:42:30,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:30" (1/1) ... [2019-11-26 02:42:30,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:30" (1/1) ... [2019-11-26 02:42:30,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:30" (1/1) ... [2019-11-26 02:42:30,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:30" (1/1) ... [2019-11-26 02:42:30,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:30" (1/1) ... [2019-11-26 02:42:30,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:30" (1/1) ... [2019-11-26 02:42:30,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:42:30,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:42:30,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:42:30,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:42:30,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d10b03b7-a8e0-4d36-8d4c-d332e02ded4d/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 02:42:31,002 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2019-11-26 02:42:31,002 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2019-11-26 02:42:31,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:42:31,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:42:31,197 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:42:31,197 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-26 02:42:31,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:42:31 BoogieIcfgContainer [2019-11-26 02:42:31,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:42:31,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:42:31,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:42:31,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:42:31,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:42:30" (1/3) ... [2019-11-26 02:42:31,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79318090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:42:31, skipping insertion in model container [2019-11-26 02:42:31,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:30" (2/3) ... [2019-11-26 02:42:31,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79318090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:42:31, skipping insertion in model container [2019-11-26 02:42:31,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:42:31" (3/3) ... [2019-11-26 02:42:31,206 INFO L109 eAbstractionObserver]: Analyzing ICFG joey.c [2019-11-26 02:42:31,214 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:42:31,226 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-11-26 02:42:31,237 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-11-26 02:42:31,257 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:42:31,258 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:42:31,258 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:42:31,258 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:42:31,258 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:42:31,258 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:42:31,258 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:42:31,259 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:42:31,275 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-11-26 02:42:31,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:42:31,280 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:42:31,280 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:42:31,281 INFO L410 AbstractCegarLoop]: === Iteration 1 === [recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:42:31,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:42:31,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1873828178, now seen corresponding path program 1 times [2019-11-26 02:42:31,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:42:31,294 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483498468] [2019-11-26 02:42:31,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:42:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:42:31,510 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 02:42:31,511 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483498468] [2019-11-26 02:42:31,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:42:31,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 02:42:31,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045408407] [2019-11-26 02:42:31,516 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:42:31,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:42:31,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:42:31,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:42:31,527 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 7 states. [2019-11-26 02:42:31,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:42:31,752 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2019-11-26 02:42:31,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:42:31,753 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2019-11-26 02:42:31,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:42:31,768 INFO L225 Difference]: With dead ends: 64 [2019-11-26 02:42:31,768 INFO L226 Difference]: Without dead ends: 52 [2019-11-26 02:42:31,773 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:42:31,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-26 02:42:31,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2019-11-26 02:42:31,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-26 02:42:31,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2019-11-26 02:42:31,817 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 6 [2019-11-26 02:42:31,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:42:31,817 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2019-11-26 02:42:31,818 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:42:31,818 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2019-11-26 02:42:31,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:42:31,818 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:42:31,819 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:42:31,819 INFO L410 AbstractCegarLoop]: === Iteration 2 === [recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:42:31,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:42:31,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1873828402, now seen corresponding path program 1 times [2019-11-26 02:42:31,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:42:31,820 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347287556] [2019-11-26 02:42:31,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:42:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:42:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:42:31,856 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:42:31,857 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:42:31,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:42:31 BoogieIcfgContainer [2019-11-26 02:42:31,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:42:31,876 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:42:31,876 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:42:31,876 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:42:31,876 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:42:31" (3/4) ... [2019-11-26 02:42:31,878 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:42:31,918 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d10b03b7-a8e0-4d36-8d4c-d332e02ded4d/bin/utaipan/witness.graphml [2019-11-26 02:42:31,921 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:42:31,923 INFO L168 Benchmark]: Toolchain (without parser) took 1302.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -117.0 MB). Peak memory consumption was 16.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:42:31,923 INFO L168 Benchmark]: CDTParser took 1.06 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 02:42:31,927 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -186.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:42:31,928 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.93 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 02:42:31,929 INFO L168 Benchmark]: Boogie Preprocessor took 12.86 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:42:31,930 INFO L168 Benchmark]: RCFGBuilder took 244.65 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:42:31,930 INFO L168 Benchmark]: TraceAbstraction took 676.06 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: 39.0 MB). Peak memory consumption was 39.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:42:31,931 INFO L168 Benchmark]: Witness Printer took 45.53 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:42:31,934 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.06 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 294.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -186.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.93 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. * Boogie Preprocessor took 12.86 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 244.65 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 676.06 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: 39.0 MB). Peak memory consumption was 39.0 MB. Max. memory is 11.5 GB. * Witness Printer took 45.53 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y; [L22] CALL rec(x) VAL [\old(x)=2147483647] [L10] COND FALSE !(x <= 0) VAL [\old(x)=2147483647, x=2147483647] [L12] COND FALSE !(x%2 == 0) VAL [\old(x)=2147483647, x=2147483647] [L15] ++x VAL [\old(x)=2147483647, x=2147483647] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 31 locations, 8 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 43 SDslu, 67 SDs, 0 SdLazy, 68 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=1, 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, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 135 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 incorrect! Received shutdown request...