./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-new/count_by_1_variant_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_720a68ff-be4e-44e8-b684-f1fc1ccc4bc5/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_720a68ff-be4e-44e8-b684-f1fc1ccc4bc5/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_720a68ff-be4e-44e8-b684-f1fc1ccc4bc5/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_720a68ff-be4e-44e8-b684-f1fc1ccc4bc5/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-new/count_by_1_variant_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_720a68ff-be4e-44e8-b684-f1fc1ccc4bc5/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_720a68ff-be4e-44e8-b684-f1fc1ccc4bc5/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2c35b63020039b8235bc0a118d8fbb9fe59d3a09 ............................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 12:16:37,932 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 12:16:37,933 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 12:16:37,941 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 12:16:37,942 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 12:16:37,942 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 12:16:37,943 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 12:16:37,944 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 12:16:37,946 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 12:16:37,946 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 12:16:37,947 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 12:16:37,947 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 12:16:37,948 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 12:16:37,948 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 12:16:37,949 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 12:16:37,949 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 12:16:37,950 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 12:16:37,951 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 12:16:37,953 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 12:16:37,954 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 12:16:37,954 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 12:16:37,955 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 12:16:37,957 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 12:16:37,957 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 12:16:37,957 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 12:16:37,958 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 12:16:37,958 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 12:16:37,959 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 12:16:37,959 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 12:16:37,960 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 12:16:37,960 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 12:16:37,961 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 12:16:37,961 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 12:16:37,961 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 12:16:37,962 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 12:16:37,962 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 12:16:37,963 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_720a68ff-be4e-44e8-b684-f1fc1ccc4bc5/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 12:16:37,972 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 12:16:37,973 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 12:16:37,973 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 12:16:37,973 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 12:16:37,973 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 12:16:37,973 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 12:16:37,974 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 12:16:37,974 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 12:16:37,974 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 12:16:37,974 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 12:16:37,974 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 12:16:37,974 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 12:16:37,975 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 12:16:37,975 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 12:16:37,975 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 12:16:37,975 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 12:16:37,975 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 12:16:37,976 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 12:16:37,976 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 12:16:37,976 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 12:16:37,976 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 12:16:37,976 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 12:16:37,976 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 12:16:37,977 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 12:16:37,977 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 12:16:37,977 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 12:16:37,977 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 12:16:37,977 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 12:16:37,977 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 12:16:37,977 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 12:16:37,977 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 12:16:37,978 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 12:16:37,978 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 12:16:37,978 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 12:16:37,978 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 12:16:37,978 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 12:16:37,978 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 12:16:37,978 INFO L133 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/working_dir_720a68ff-be4e-44e8-b684-f1fc1ccc4bc5/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c35b63020039b8235bc0a118d8fbb9fe59d3a09 [2018-11-23 12:16:38,001 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 12:16:38,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 12:16:38,012 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 12:16:38,013 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 12:16:38,014 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 12:16:38,014 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_720a68ff-be4e-44e8-b684-f1fc1ccc4bc5/bin-2019/utaipan/../../sv-benchmarks/c/loop-new/count_by_1_variant_true-unreach-call_true-termination.i [2018-11-23 12:16:38,058 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_720a68ff-be4e-44e8-b684-f1fc1ccc4bc5/bin-2019/utaipan/data/10e37d53e/6f53d578fefd4cd4affdf49bd447c059/FLAG72f1da817 [2018-11-23 12:16:38,345 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 12:16:38,345 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_720a68ff-be4e-44e8-b684-f1fc1ccc4bc5/sv-benchmarks/c/loop-new/count_by_1_variant_true-unreach-call_true-termination.i [2018-11-23 12:16:38,350 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_720a68ff-be4e-44e8-b684-f1fc1ccc4bc5/bin-2019/utaipan/data/10e37d53e/6f53d578fefd4cd4affdf49bd447c059/FLAG72f1da817 [2018-11-23 12:16:38,358 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_720a68ff-be4e-44e8-b684-f1fc1ccc4bc5/bin-2019/utaipan/data/10e37d53e/6f53d578fefd4cd4affdf49bd447c059 [2018-11-23 12:16:38,360 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 12:16:38,361 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 12:16:38,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 12:16:38,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 12:16:38,364 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 12:16:38,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:16:38" (1/1) ... [2018-11-23 12:16:38,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aa5b739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:16:38, skipping insertion in model container [2018-11-23 12:16:38,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:16:38" (1/1) ... [2018-11-23 12:16:38,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 12:16:38,384 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 12:16:38,486 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 12:16:38,488 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 12:16:38,496 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 12:16:38,504 INFO L195 MainTranslator]: Completed translation [2018-11-23 12:16:38,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:16:38 WrapperNode [2018-11-23 12:16:38,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 12:16:38,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 12:16:38,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 12:16:38,504 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 12:16:38,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:16:38" (1/1) ... [2018-11-23 12:16:38,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:16:38" (1/1) ... [2018-11-23 12:16:38,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 12:16:38,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 12:16:38,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 12:16:38,521 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 12:16:38,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:16:38" (1/1) ... [2018-11-23 12:16:38,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:16:38" (1/1) ... [2018-11-23 12:16:38,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:16:38" (1/1) ... [2018-11-23 12:16:38,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:16:38" (1/1) ... [2018-11-23 12:16:38,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:16:38" (1/1) ... [2018-11-23 12:16:38,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:16:38" (1/1) ... [2018-11-23 12:16:38,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:16:38" (1/1) ... [2018-11-23 12:16:38,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 12:16:38,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 12:16:38,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 12:16:38,537 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 12:16:38,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:16:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_720a68ff-be4e-44e8-b684-f1fc1ccc4bc5/bin-2019/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 [2018-11-23 12:16:38,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 12:16:38,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 12:16:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 12:16:38,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 12:16:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 12:16:38,613 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 12:16:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 12:16:38,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 12:16:38,710 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 12:16:38,710 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 12:16:38,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:16:38 BoogieIcfgContainer [2018-11-23 12:16:38,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 12:16:38,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 12:16:38,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 12:16:38,714 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 12:16:38,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:16:38" (1/3) ... [2018-11-23 12:16:38,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d1f1f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:16:38, skipping insertion in model container [2018-11-23 12:16:38,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:16:38" (2/3) ... [2018-11-23 12:16:38,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d1f1f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:16:38, skipping insertion in model container [2018-11-23 12:16:38,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:16:38" (3/3) ... [2018-11-23 12:16:38,716 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_1_variant_true-unreach-call_true-termination.i [2018-11-23 12:16:38,722 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 12:16:38,727 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 12:16:38,737 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 12:16:38,757 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 12:16:38,757 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 12:16:38,758 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 12:16:38,758 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 12:16:38,758 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 12:16:38,758 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 12:16:38,758 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 12:16:38,758 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 12:16:38,770 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-23 12:16:38,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 12:16:38,774 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:16:38,775 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:16:38,777 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:16:38,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:16:38,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1875203651, now seen corresponding path program 1 times [2018-11-23 12:16:38,782 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 12:16:38,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:16:38,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:16:38,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:16:38,812 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 12:16:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:16:38,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:16:38,906 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 12:16:38,906 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 12:16:38,906 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 12:16:38,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 12:16:38,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 12:16:38,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 12:16:38,918 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 5 states. [2018-11-23 12:16:38,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:16:38,989 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2018-11-23 12:16:38,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 12:16:38,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-11-23 12:16:38,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:16:38,997 INFO L225 Difference]: With dead ends: 40 [2018-11-23 12:16:38,997 INFO L226 Difference]: Without dead ends: 21 [2018-11-23 12:16:38,999 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 12:16:39,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-23 12:16:39,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2018-11-23 12:16:39,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-23 12:16:39,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-11-23 12:16:39,026 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 10 [2018-11-23 12:16:39,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:16:39,026 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-11-23 12:16:39,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 12:16:39,027 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-11-23 12:16:39,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-23 12:16:39,027 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:16:39,027 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:16:39,027 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:16:39,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:16:39,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1632080392, now seen corresponding path program 1 times [2018-11-23 12:16:39,028 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 12:16:39,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:16:39,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:16:39,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:16:39,029 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 12:16:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:16:39,092 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:16:39,093 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 12:16:39,093 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 12:16:39,093 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2018-11-23 12:16:39,095 INFO L202 CegarAbsIntRunner]: [0], [4], [12], [15], [21], [24], [26], [29], [31], [32], [33], [34], [36], [37] [2018-11-23 12:16:39,113 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 12:16:39,114 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 12:16:39,216 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 12:16:39,217 INFO L272 AbstractInterpreter]: Visited 14 different actions 41 times. Merged at 3 different actions 9 times. Never widened. Performed 62 root evaluator evaluations with a maximum evaluation depth of 3. Performed 62 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 2 variables. [2018-11-23 12:16:39,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:16:39,222 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 12:16:39,222 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 12:16:39,222 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_720a68ff-be4e-44e8-b684-f1fc1ccc4bc5/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 12:16:39,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:16:39,234 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 12:16:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:16:39,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:16:39,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:16:39,300 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 12:16:39,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:16:39,374 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 12:16:39,374 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2018-11-23 12:16:39,374 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 12:16:39,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 12:16:39,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 12:16:39,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-23 12:16:39,375 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 9 states. [2018-11-23 12:16:39,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:16:39,465 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-11-23 12:16:39,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 12:16:39,465 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2018-11-23 12:16:39,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:16:39,466 INFO L225 Difference]: With dead ends: 30 [2018-11-23 12:16:39,466 INFO L226 Difference]: Without dead ends: 28 [2018-11-23 12:16:39,467 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-11-23 12:16:39,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-23 12:16:39,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2018-11-23 12:16:39,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-23 12:16:39,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-11-23 12:16:39,473 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 17 [2018-11-23 12:16:39,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:16:39,473 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-11-23 12:16:39,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 12:16:39,473 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-11-23 12:16:39,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-23 12:16:39,474 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:16:39,474 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:16:39,474 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:16:39,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:16:39,474 INFO L82 PathProgramCache]: Analyzing trace with hash 282820957, now seen corresponding path program 2 times [2018-11-23 12:16:39,474 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 12:16:39,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:16:39,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:16:39,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:16:39,475 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 12:16:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:16:39,567 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 12:16:39,567 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 12:16:39,567 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 12:16:39,568 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 12:16:39,568 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 12:16:39,568 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 12:16:39,568 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_720a68ff-be4e-44e8-b684-f1fc1ccc4bc5/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 12:16:39,577 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 12:16:39,577 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 12:16:39,584 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-23 12:16:39,584 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 12:16:39,586 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:16:39,609 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 12:16:39,610 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 12:16:39,653 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 12:16:39,677 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 12:16:39,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 14 [2018-11-23 12:16:39,677 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 12:16:39,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-23 12:16:39,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-23 12:16:39,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-11-23 12:16:39,678 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 13 states. [2018-11-23 12:16:39,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:16:39,733 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2018-11-23 12:16:39,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 12:16:39,733 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-11-23 12:16:39,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:16:39,733 INFO L225 Difference]: With dead ends: 32 [2018-11-23 12:16:39,733 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 12:16:39,734 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2018-11-23 12:16:39,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 12:16:39,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 12:16:39,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 12:16:39,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 12:16:39,735 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2018-11-23 12:16:39,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:16:39,735 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 12:16:39,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-23 12:16:39,735 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 12:16:39,735 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 12:16:39,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 12:16:39,785 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 12:16:39,786 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 12:16:39,786 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 12:16:39,786 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 12:16:39,786 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 12:16:39,786 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 12:16:39,786 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 10 16) the Hoare annotation is: true [2018-11-23 12:16:39,786 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 10 16) no Hoare annotation was computed. [2018-11-23 12:16:39,786 INFO L444 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: (<= main_~i~0 999999) [2018-11-23 12:16:39,786 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 10 16) no Hoare annotation was computed. [2018-11-23 12:16:39,787 INFO L448 ceAbstractionStarter]: For program point L13-1(lines 12 14) no Hoare annotation was computed. [2018-11-23 12:16:39,787 INFO L444 ceAbstractionStarter]: At program point L12-2(lines 12 14) the Hoare annotation is: (<= main_~i~0 1000000) [2018-11-23 12:16:39,787 INFO L448 ceAbstractionStarter]: For program point L12-3(lines 12 14) no Hoare annotation was computed. [2018-11-23 12:16:39,787 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-23 12:16:39,787 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-23 12:16:39,787 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-23 12:16:39,787 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-23 12:16:39,787 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-23 12:16:39,787 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-23 12:16:39,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 12:16:39 BoogieIcfgContainer [2018-11-23 12:16:39,795 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 12:16:39,795 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 12:16:39,795 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 12:16:39,796 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 12:16:39,796 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:16:38" (3/4) ... [2018-11-23 12:16:39,799 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 12:16:39,804 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 12:16:39,805 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 12:16:39,805 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-23 12:16:39,808 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-23 12:16:39,808 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 12:16:39,809 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 12:16:39,836 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_720a68ff-be4e-44e8-b684-f1fc1ccc4bc5/bin-2019/utaipan/witness.graphml [2018-11-23 12:16:39,836 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 12:16:39,836 INFO L168 Benchmark]: Toolchain (without parser) took 1475.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.3 MB). Free memory was 959.1 MB in the beginning and 1.0 GB in the end (delta: -58.9 MB). Peak memory consumption was 110.5 MB. Max. memory is 11.5 GB. [2018-11-23 12:16:39,837 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 12:16:39,838 INFO L168 Benchmark]: CACSL2BoogieTranslator took 142.56 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 12:16:39,838 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.42 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 12:16:39,839 INFO L168 Benchmark]: Boogie Preprocessor took 16.04 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 12:16:39,839 INFO L168 Benchmark]: RCFGBuilder took 173.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.3 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -200.7 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-23 12:16:39,840 INFO L168 Benchmark]: TraceAbstraction took 1083.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 125.1 MB). Peak memory consumption was 125.1 MB. Max. memory is 11.5 GB. [2018-11-23 12:16:39,840 INFO L168 Benchmark]: Witness Printer took 40.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-23 12:16:39,843 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 142.56 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.42 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.04 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 173.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.3 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -200.7 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1083.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 125.1 MB). Peak memory consumption was 125.1 MB. Max. memory is 11.5 GB. * Witness Printer took 40.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: i <= 1000000 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 1.0s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 29 SDslu, 135 SDs, 0 SdLazy, 132 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 80 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 20 NumberOfFragments, 11 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 23 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 5143 SizeOfPredicates, 4 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 29/57 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...