./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex2.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_df8356ca-675b-4bd2-8de7-736feb786b41/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_df8356ca-675b-4bd2-8de7-736feb786b41/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_df8356ca-675b-4bd2-8de7-736feb786b41/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_df8356ca-675b-4bd2-8de7-736feb786b41/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_df8356ca-675b-4bd2-8de7-736feb786b41/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_df8356ca-675b-4bd2-8de7-736feb786b41/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 f1df70d37f8afdd882c0c58eaed03ed11e314407 ..................................................................................................................................................................................................................................................................................................................... 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 02:36:08,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:36:08,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:36:08,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:36:08,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:36:08,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:36:08,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:36:08,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:36:08,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:36:08,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:36:08,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:36:08,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:36:08,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:36:08,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:36:08,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:36:08,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:36:08,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:36:08,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:36:08,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:36:08,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:36:08,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:36:08,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:36:08,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:36:08,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:36:08,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:36:08,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:36:08,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:36:08,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:36:08,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:36:08,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:36:08,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:36:08,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:36:08,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:36:08,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:36:08,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:36:08,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:36:08,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:36:08,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:36:08,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:36:08,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:36:08,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:36:08,461 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_df8356ca-675b-4bd2-8de7-736feb786b41/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-11-26 02:36:08,488 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:36:08,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:36:08,499 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:36:08,499 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:36:08,500 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:36:08,500 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:36:08,500 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:36:08,500 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:36:08,500 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:36:08,501 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:36:08,501 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:36:08,501 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:36:08,501 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:36:08,502 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:36:08,502 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:36:08,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:36:08,503 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:36:08,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:36:08,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:36:08,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:36:08,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:36:08,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:36:08,504 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-26 02:36:08,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:36:08,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:36:08,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:36:08,506 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:36:08,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:36:08,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:36:08,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:36:08,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:36:08,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:36:08,507 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:36:08,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:36:08,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:36:08,508 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:36:08,508 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_df8356ca-675b-4bd2-8de7-736feb786b41/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 -> f1df70d37f8afdd882c0c58eaed03ed11e314407 [2019-11-26 02:36:08,691 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:36:08,709 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:36:08,712 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:36:08,714 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:36:08,714 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:36:08,715 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_df8356ca-675b-4bd2-8de7-736feb786b41/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex2.c [2019-11-26 02:36:08,779 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_df8356ca-675b-4bd2-8de7-736feb786b41/bin/utaipan/data/ac55cc3c4/e0abdd02d10d4d2983d4aa4766f73116/FLAGcf3e85bfc [2019-11-26 02:36:09,176 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:36:09,177 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_df8356ca-675b-4bd2-8de7-736feb786b41/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex2.c [2019-11-26 02:36:09,182 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_df8356ca-675b-4bd2-8de7-736feb786b41/bin/utaipan/data/ac55cc3c4/e0abdd02d10d4d2983d4aa4766f73116/FLAGcf3e85bfc [2019-11-26 02:36:09,558 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_df8356ca-675b-4bd2-8de7-736feb786b41/bin/utaipan/data/ac55cc3c4/e0abdd02d10d4d2983d4aa4766f73116 [2019-11-26 02:36:09,561 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:36:09,562 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:36:09,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:36:09,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:36:09,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:36:09,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:36:09" (1/1) ... [2019-11-26 02:36:09,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18a2a056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:09, skipping insertion in model container [2019-11-26 02:36:09,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:36:09" (1/1) ... [2019-11-26 02:36:09,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:36:09,594 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:36:09,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:36:09,797 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:36:09,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:36:09,898 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:36:09,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:09 WrapperNode [2019-11-26 02:36:09,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:36:09,899 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:36:09,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:36:09,899 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:36:09,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:09" (1/1) ... [2019-11-26 02:36:09,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:09" (1/1) ... [2019-11-26 02:36:09,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:36:09,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:36:09,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:36:09,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:36:09,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:09" (1/1) ... [2019-11-26 02:36:09,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:09" (1/1) ... [2019-11-26 02:36:09,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:09" (1/1) ... [2019-11-26 02:36:09,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:09" (1/1) ... [2019-11-26 02:36:09,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:09" (1/1) ... [2019-11-26 02:36:09,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:09" (1/1) ... [2019-11-26 02:36:09,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:09" (1/1) ... [2019-11-26 02:36:09,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:36:09,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:36:09,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:36:09,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:36:09,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df8356ca-675b-4bd2-8de7-736feb786b41/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 02:36:10,012 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-11-26 02:36:10,012 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-11-26 02:36:10,013 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-11-26 02:36:10,013 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-11-26 02:36:10,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:36:10,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:36:10,209 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:36:10,209 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-26 02:36:10,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:36:10 BoogieIcfgContainer [2019-11-26 02:36:10,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:36:10,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:36:10,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:36:10,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:36:10,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:36:09" (1/3) ... [2019-11-26 02:36:10,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17104a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:36:10, skipping insertion in model container [2019-11-26 02:36:10,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:09" (2/3) ... [2019-11-26 02:36:10,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17104a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:36:10, skipping insertion in model container [2019-11-26 02:36:10,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:36:10" (3/3) ... [2019-11-26 02:36:10,229 INFO L109 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex2.c [2019-11-26 02:36:10,237 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:36:10,253 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-26 02:36:10,263 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-26 02:36:10,296 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:36:10,296 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:36:10,297 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:36:10,297 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:36:10,297 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:36:10,297 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:36:10,297 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:36:10,297 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:36:10,316 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-11-26 02:36:10,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:36:10,320 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:10,321 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:36:10,321 INFO L410 AbstractCegarLoop]: === Iteration 1 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:36:10,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:10,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1512012543, now seen corresponding path program 1 times [2019-11-26 02:36:10,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:10,339 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458728963] [2019-11-26 02:36:10,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:10,487 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 02:36:10,487 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458728963] [2019-11-26 02:36:10,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:36:10,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:36:10,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035088695] [2019-11-26 02:36:10,493 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:36:10,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:36:10,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:36:10,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:36:10,505 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2019-11-26 02:36:10,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:36:10,613 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2019-11-26 02:36:10,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:36:10,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-11-26 02:36:10,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:36:10,621 INFO L225 Difference]: With dead ends: 36 [2019-11-26 02:36:10,621 INFO L226 Difference]: Without dead ends: 22 [2019-11-26 02:36:10,625 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:36:10,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-26 02:36:10,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2019-11-26 02:36:10,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-26 02:36:10,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-11-26 02:36:10,657 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 6 [2019-11-26 02:36:10,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:36:10,657 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-11-26 02:36:10,657 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:36:10,657 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-11-26 02:36:10,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:36:10,658 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:10,658 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:36:10,658 INFO L410 AbstractCegarLoop]: === Iteration 2 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:36:10,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:10,658 INFO L82 PathProgramCache]: Analyzing trace with hash -372251385, now seen corresponding path program 1 times [2019-11-26 02:36:10,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:10,659 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53432124] [2019-11-26 02:36:10,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:10,698 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 02:36:10,698 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53432124] [2019-11-26 02:36:10,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:36:10,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:36:10,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444774157] [2019-11-26 02:36:10,700 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:36:10,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:36:10,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:36:10,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:36:10,701 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 5 states. [2019-11-26 02:36:10,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:36:10,749 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2019-11-26 02:36:10,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:36:10,750 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-26 02:36:10,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:36:10,751 INFO L225 Difference]: With dead ends: 22 [2019-11-26 02:36:10,751 INFO L226 Difference]: Without dead ends: 21 [2019-11-26 02:36:10,752 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:36:10,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-26 02:36:10,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-11-26 02:36:10,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-26 02:36:10,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-11-26 02:36:10,757 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 7 [2019-11-26 02:36:10,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:36:10,757 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-11-26 02:36:10,757 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:36:10,757 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-11-26 02:36:10,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:36:10,758 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:10,758 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:36:10,758 INFO L410 AbstractCegarLoop]: === Iteration 3 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:36:10,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:10,759 INFO L82 PathProgramCache]: Analyzing trace with hash -135389413, now seen corresponding path program 1 times [2019-11-26 02:36:10,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:10,759 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520481308] [2019-11-26 02:36:10,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:36:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:36:10,818 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:36:10,818 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:36:10,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:36:10 BoogieIcfgContainer [2019-11-26 02:36:10,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:36:10,842 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:36:10,842 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:36:10,842 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:36:10,843 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:36:10" (3/4) ... [2019-11-26 02:36:10,845 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:36:10,896 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_df8356ca-675b-4bd2-8de7-736feb786b41/bin/utaipan/witness.graphml [2019-11-26 02:36:10,896 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:36:10,898 INFO L168 Benchmark]: Toolchain (without parser) took 1335.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -142.2 MB). Peak memory consumption was 9.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:10,899 INFO L168 Benchmark]: CDTParser took 0.24 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 02:36:10,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -205.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:10,900 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.63 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 02:36:10,901 INFO L168 Benchmark]: Boogie Preprocessor took 24.70 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 02:36:10,901 INFO L168 Benchmark]: RCFGBuilder took 255.28 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: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:10,902 INFO L168 Benchmark]: TraceAbstraction took 629.94 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: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:10,902 INFO L168 Benchmark]: Witness Printer took 54.35 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 02:36:10,908 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 334.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -205.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.63 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 24.70 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 255.28 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: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 629.94 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: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. * Witness Printer took 54.35 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: - CounterExampleResult [Line: 26]: integer overflow possible integer overflow possible We found a FailurePath: [L30] int i = __VERIFIER_nondet_int(); [L31] int x = __VERIFIER_nondet_int(); [L32] COND TRUE i >= 0 && x >= 0 [L33] CALL f(i,x) VAL [\old(i)=2147483647, \old(x)=1] [L18] COND FALSE !(i==0) VAL [\old(i)=2147483647, \old(x)=1, i=2147483647, x=1] [L21] EXPR i-1 VAL [\old(i)=2147483647, \old(x)=1, i=2147483647, x=1] [L21] CALL g(i-1,x,i) VAL [\old(a)=2147483646, \old(b)=1, \old(c)=2147483647] [L26] b+c VAL [\old(a)=2147483646, \old(b)=1, \old(c)=2147483647, a=2147483646, b=1, c=2147483647] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 23 SDslu, 84 SDs, 0 SdLazy, 44 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 171 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...