./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/simple_true-unreach-call1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_34e5df92-fdda-404d-9365-5e5799913390/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_34e5df92-fdda-404d-9365-5e5799913390/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_34e5df92-fdda-404d-9365-5e5799913390/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_34e5df92-fdda-404d-9365-5e5799913390/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/simple_true-unreach-call1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_34e5df92-fdda-404d-9365-5e5799913390/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_34e5df92-fdda-404d-9365-5e5799913390/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 e7cbc65d3ba09c4819731d0da35aff1b9185c4a8 ....................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-03 03:28:27,634 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 03:28:27,635 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 03:28:27,641 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 03:28:27,641 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 03:28:27,642 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 03:28:27,643 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 03:28:27,643 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 03:28:27,644 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 03:28:27,645 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 03:28:27,645 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 03:28:27,645 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 03:28:27,646 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 03:28:27,646 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 03:28:27,647 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 03:28:27,647 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 03:28:27,648 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 03:28:27,649 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 03:28:27,650 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 03:28:27,650 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 03:28:27,651 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 03:28:27,652 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 03:28:27,653 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 03:28:27,653 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 03:28:27,653 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 03:28:27,653 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 03:28:27,654 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 03:28:27,654 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 03:28:27,655 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 03:28:27,655 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 03:28:27,655 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 03:28:27,656 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 03:28:27,656 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 03:28:27,656 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 03:28:27,657 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 03:28:27,657 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 03:28:27,657 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_34e5df92-fdda-404d-9365-5e5799913390/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-03 03:28:27,664 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 03:28:27,664 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 03:28:27,665 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 03:28:27,665 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 03:28:27,665 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 03:28:27,665 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 03:28:27,665 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 03:28:27,666 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 03:28:27,666 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 03:28:27,666 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 03:28:27,666 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 03:28:27,666 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 03:28:27,666 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 03:28:27,667 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 03:28:27,667 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 03:28:27,667 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 03:28:27,667 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 03:28:27,667 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 03:28:27,667 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 03:28:27,667 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 03:28:27,667 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 03:28:27,668 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 03:28:27,668 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 03:28:27,668 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 03:28:27,668 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 03:28:27,668 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 03:28:27,668 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 03:28:27,668 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 03:28:27,668 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 03:28:27,669 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 03:28:27,669 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 03:28:27,669 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 03:28:27,669 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 03:28:27,669 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 03:28:27,669 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 03:28:27,669 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 03:28:27,669 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_34e5df92-fdda-404d-9365-5e5799913390/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 -> e7cbc65d3ba09c4819731d0da35aff1b9185c4a8 [2018-12-03 03:28:27,687 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 03:28:27,696 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 03:28:27,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 03:28:27,700 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 03:28:27,700 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 03:28:27,700 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_34e5df92-fdda-404d-9365-5e5799913390/bin-2019/utaipan/../../sv-benchmarks/c/loop-acceleration/simple_true-unreach-call1.i [2018-12-03 03:28:27,744 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_34e5df92-fdda-404d-9365-5e5799913390/bin-2019/utaipan/data/109602323/23cb56690c164c0782415e64e7281eb5/FLAGd5d5cb37c [2018-12-03 03:28:28,158 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 03:28:28,159 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_34e5df92-fdda-404d-9365-5e5799913390/sv-benchmarks/c/loop-acceleration/simple_true-unreach-call1.i [2018-12-03 03:28:28,162 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_34e5df92-fdda-404d-9365-5e5799913390/bin-2019/utaipan/data/109602323/23cb56690c164c0782415e64e7281eb5/FLAGd5d5cb37c [2018-12-03 03:28:28,170 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_34e5df92-fdda-404d-9365-5e5799913390/bin-2019/utaipan/data/109602323/23cb56690c164c0782415e64e7281eb5 [2018-12-03 03:28:28,171 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 03:28:28,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 03:28:28,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 03:28:28,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 03:28:28,175 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 03:28:28,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 03:28:28" (1/1) ... [2018-12-03 03:28:28,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2817da2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:28:28, skipping insertion in model container [2018-12-03 03:28:28,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 03:28:28" (1/1) ... [2018-12-03 03:28:28,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 03:28:28,189 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 03:28:28,269 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 03:28:28,271 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 03:28:28,279 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 03:28:28,287 INFO L195 MainTranslator]: Completed translation [2018-12-03 03:28:28,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:28:28 WrapperNode [2018-12-03 03:28:28,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 03:28:28,288 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 03:28:28,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 03:28:28,288 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 03:28:28,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:28:28" (1/1) ... [2018-12-03 03:28:28,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:28:28" (1/1) ... [2018-12-03 03:28:28,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 03:28:28,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 03:28:28,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 03:28:28,299 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 03:28:28,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:28:28" (1/1) ... [2018-12-03 03:28:28,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:28:28" (1/1) ... [2018-12-03 03:28:28,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:28:28" (1/1) ... [2018-12-03 03:28:28,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:28:28" (1/1) ... [2018-12-03 03:28:28,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:28:28" (1/1) ... [2018-12-03 03:28:28,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:28:28" (1/1) ... [2018-12-03 03:28:28,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:28:28" (1/1) ... [2018-12-03 03:28:28,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 03:28:28,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 03:28:28,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 03:28:28,311 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 03:28:28,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:28:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_34e5df92-fdda-404d-9365-5e5799913390/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 [2018-12-03 03:28:28,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 03:28:28,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 03:28:28,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 03:28:28,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 03:28:28,373 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 03:28:28,373 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 03:28:28,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-03 03:28:28,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-03 03:28:28,448 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 03:28:28,448 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-03 03:28:28,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:28:28 BoogieIcfgContainer [2018-12-03 03:28:28,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 03:28:28,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 03:28:28,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 03:28:28,451 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 03:28:28,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 03:28:28" (1/3) ... [2018-12-03 03:28:28,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a15662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 03:28:28, skipping insertion in model container [2018-12-03 03:28:28,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:28:28" (2/3) ... [2018-12-03 03:28:28,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a15662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 03:28:28, skipping insertion in model container [2018-12-03 03:28:28,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:28:28" (3/3) ... [2018-12-03 03:28:28,454 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_true-unreach-call1.i [2018-12-03 03:28:28,462 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 03:28:28,467 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 03:28:28,481 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 03:28:28,499 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 03:28:28,499 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 03:28:28,499 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 03:28:28,499 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 03:28:28,499 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 03:28:28,500 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 03:28:28,500 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 03:28:28,500 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 03:28:28,511 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-12-03 03:28:28,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-03 03:28:28,515 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 03:28:28,516 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 03:28:28,518 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 03:28:28,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 03:28:28,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2018-12-03 03:28:28,522 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 03:28:28,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:28:28,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 03:28:28,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:28:28,552 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 03:28:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 03:28:28,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 03:28:28,646 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 03:28:28,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 03:28:28,647 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 03:28:28,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 03:28:28,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 03:28:28,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 03:28:28,659 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2018-12-03 03:28:28,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 03:28:28,678 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2018-12-03 03:28:28,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 03:28:28,680 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-03 03:28:28,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 03:28:28,687 INFO L225 Difference]: With dead ends: 29 [2018-12-03 03:28:28,687 INFO L226 Difference]: Without dead ends: 12 [2018-12-03 03:28:28,689 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 03:28:28,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-03 03:28:28,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-03 03:28:28,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-03 03:28:28,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-12-03 03:28:28,711 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-12-03 03:28:28,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 03:28:28,712 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-12-03 03:28:28,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 03:28:28,712 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-12-03 03:28:28,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-03 03:28:28,712 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 03:28:28,712 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 03:28:28,712 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 03:28:28,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 03:28:28,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1432376145, now seen corresponding path program 1 times [2018-12-03 03:28:28,713 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 03:28:28,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:28:28,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 03:28:28,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 03:28:28,714 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 03:28:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 03:28:28,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 03:28:28,762 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 03:28:28,762 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 03:28:28,762 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-12-03 03:28:28,763 INFO L205 CegarAbsIntRunner]: [0], [4], [11], [13], [19], [22], [24], [30], [31], [32], [34] [2018-12-03 03:28:28,783 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-03 03:28:28,783 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 03:28:28,872 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-03 03:28:28,873 INFO L272 AbstractInterpreter]: Visited 10 different actions 16 times. Merged at 1 different actions 3 times. Never widened. Performed 39 root evaluator evaluations with a maximum evaluation depth of 13. Performed 39 inverse root evaluator evaluations with a maximum inverse evaluation depth of 13. Found 2 fixpoints after 2 different actions. Largest state had 2 variables. [2018-12-03 03:28:28,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 03:28:28,878 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-03 03:28:28,907 INFO L227 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 50% of their original sizes. [2018-12-03 03:28:28,908 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-03 03:28:28,920 INFO L418 sIntCurrentIteration]: We unified 10 AI predicates to 10 [2018-12-03 03:28:28,920 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-03 03:28:28,921 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-03 03:28:28,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2018-12-03 03:28:28,921 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 03:28:28,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-03 03:28:28,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-03 03:28:28,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-03 03:28:28,922 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states. [2018-12-03 03:28:28,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 03:28:28,959 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-12-03 03:28:28,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-03 03:28:28,959 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-12-03 03:28:28,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 03:28:28,960 INFO L225 Difference]: With dead ends: 12 [2018-12-03 03:28:28,960 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 03:28:28,960 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-12-03 03:28:28,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 03:28:28,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 03:28:28,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 03:28:28,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 03:28:28,961 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-12-03 03:28:28,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 03:28:28,961 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 03:28:28,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-03 03:28:28,961 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 03:28:28,961 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 03:28:28,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 03:28:29,002 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-03 03:28:29,002 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-03 03:28:29,002 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-03 03:28:29,002 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-03 03:28:29,002 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-03 03:28:29,003 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-03 03:28:29,003 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 8 14) the Hoare annotation is: true [2018-12-03 03:28:29,003 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 8 14) no Hoare annotation was computed. [2018-12-03 03:28:29,003 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 8 14) no Hoare annotation was computed. [2018-12-03 03:28:29,003 INFO L444 ceAbstractionStarter]: At program point L10-2(lines 10 12) the Hoare annotation is: (= (mod main_~x~0 2) 0) [2018-12-03 03:28:29,003 INFO L444 ceAbstractionStarter]: At program point L10-3(lines 10 12) the Hoare annotation is: (and (not (= main_~x~0 0)) (= (mod main_~x~0 2) 0)) [2018-12-03 03:28:29,003 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-12-03 03:28:29,003 INFO L448 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-12-03 03:28:29,004 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-12-03 03:28:29,004 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-12-03 03:28:29,004 INFO L448 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-12-03 03:28:29,004 INFO L448 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-12-03 03:28:29,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 03:28:29 BoogieIcfgContainer [2018-12-03 03:28:29,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 03:28:29,010 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 03:28:29,010 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 03:28:29,010 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 03:28:29,011 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:28:28" (3/4) ... [2018-12-03 03:28:29,013 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-03 03:28:29,016 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-03 03:28:29,017 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-03 03:28:29,017 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-12-03 03:28:29,019 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-03 03:28:29,019 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-03 03:28:29,019 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-03 03:28:29,044 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_34e5df92-fdda-404d-9365-5e5799913390/bin-2019/utaipan/witness.graphml [2018-12-03 03:28:29,044 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 03:28:29,045 INFO L168 Benchmark]: Toolchain (without parser) took 873.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 953.5 MB in the beginning and 1.0 GB in the end (delta: -81.6 MB). Peak memory consumption was 40.6 MB. Max. memory is 11.5 GB. [2018-12-03 03:28:29,046 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 03:28:29,046 INFO L168 Benchmark]: CACSL2BoogieTranslator took 114.62 ms. Allocated memory is still 1.0 GB. Free memory was 953.5 MB in the beginning and 942.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-03 03:28:29,047 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.45 ms. Allocated memory is still 1.0 GB. Free memory is still 942.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 03:28:29,047 INFO L168 Benchmark]: Boogie Preprocessor took 11.68 ms. Allocated memory is still 1.0 GB. Free memory is still 942.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 03:28:29,047 INFO L168 Benchmark]: RCFGBuilder took 137.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 942.7 MB in the beginning and 1.1 GB in the end (delta: -159.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2018-12-03 03:28:29,048 INFO L168 Benchmark]: TraceAbstraction took 561.30 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: 63.6 MB). Peak memory consumption was 63.6 MB. Max. memory is 11.5 GB. [2018-12-03 03:28:29,048 INFO L168 Benchmark]: Witness Printer took 34.44 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: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-12-03 03:28:29,051 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 114.62 ms. Allocated memory is still 1.0 GB. Free memory was 953.5 MB in the beginning and 942.7 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 11.45 ms. Allocated memory is still 1.0 GB. Free memory is still 942.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.68 ms. Allocated memory is still 1.0 GB. Free memory is still 942.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 137.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 942.7 MB in the beginning and 1.1 GB in the end (delta: -159.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 561.30 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: 63.6 MB). Peak memory consumption was 63.6 MB. Max. memory is 11.5 GB. * Witness Printer took 34.44 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: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 10]: Loop Invariant Derived loop invariant: x % 2 == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. SAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 2 SDslu, 35 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.8 AbsIntWeakeningRatio, 0.3 AbsIntAvgWeakeningVarsNumRemoved, 0.1 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 10 NumberOfFragments, 20 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 395 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...