./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loops/trex04_true-unreach-call_false-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_fc5a7adb-860b-4100-b876-8e4569dd6c26/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_fc5a7adb-860b-4100-b876-8e4569dd6c26/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_fc5a7adb-860b-4100-b876-8e4569dd6c26/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_fc5a7adb-860b-4100-b876-8e4569dd6c26/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/trex04_true-unreach-call_false-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_fc5a7adb-860b-4100-b876-8e4569dd6c26/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_fc5a7adb-860b-4100-b876-8e4569dd6c26/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 ebd700d2a774ad3ca11fe220b69fa701cbe412e1 ......................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:56:51,718 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:56:51,720 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:56:51,729 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:56:51,730 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:56:51,730 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:56:51,732 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:56:51,733 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:56:51,735 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:56:51,735 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:56:51,736 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:56:51,737 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:56:51,737 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:56:51,738 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:56:51,739 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:56:51,740 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:56:51,741 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:56:51,742 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:56:51,744 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:56:51,746 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:56:51,747 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:56:51,748 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:56:51,751 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:56:51,751 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:56:51,752 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:56:51,752 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:56:51,753 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:56:51,755 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:56:51,755 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:56:51,756 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:56:51,757 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:56:51,757 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 23:56:51,758 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:56:51,758 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:56:51,759 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:56:51,760 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:56:51,760 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_fc5a7adb-860b-4100-b876-8e4569dd6c26/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 23:56:51,773 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:56:51,773 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:56:51,774 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:56:51,774 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:56:51,775 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:56:51,775 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:56:51,775 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:56:51,775 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:56:51,776 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:56:51,776 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:56:51,776 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:56:51,777 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:56:51,777 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 23:56:51,777 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:56:51,777 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 23:56:51,777 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:56:51,778 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:56:51,778 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:56:51,778 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:56:51,780 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 23:56:51,780 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:56:51,780 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:56:51,780 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:56:51,780 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:56:51,781 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:56:51,781 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:56:51,781 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:56:51,781 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:56:51,781 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:56:51,781 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:56:51,782 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:56:51,782 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:56:51,782 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:56:51,782 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:56:51,782 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_fc5a7adb-860b-4100-b876-8e4569dd6c26/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 -> ebd700d2a774ad3ca11fe220b69fa701cbe412e1 [2018-10-26 23:56:51,812 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:56:51,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:56:51,825 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:56:51,827 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:56:51,827 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:56:51,828 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_fc5a7adb-860b-4100-b876-8e4569dd6c26/bin-2019/utaipan/../../sv-benchmarks/c/loops/trex04_true-unreach-call_false-termination.i [2018-10-26 23:56:51,874 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fc5a7adb-860b-4100-b876-8e4569dd6c26/bin-2019/utaipan/data/46b45a04a/07180a60ee6c4f81975a417329de91a4/FLAG5ea7dd04d [2018-10-26 23:56:52,245 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:56:52,246 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_fc5a7adb-860b-4100-b876-8e4569dd6c26/sv-benchmarks/c/loops/trex04_true-unreach-call_false-termination.i [2018-10-26 23:56:52,253 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fc5a7adb-860b-4100-b876-8e4569dd6c26/bin-2019/utaipan/data/46b45a04a/07180a60ee6c4f81975a417329de91a4/FLAG5ea7dd04d [2018-10-26 23:56:52,267 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_fc5a7adb-860b-4100-b876-8e4569dd6c26/bin-2019/utaipan/data/46b45a04a/07180a60ee6c4f81975a417329de91a4 [2018-10-26 23:56:52,270 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:56:52,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 23:56:52,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:56:52,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:56:52,276 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:56:52,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:56:52" (1/1) ... [2018-10-26 23:56:52,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59845b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:52, skipping insertion in model container [2018-10-26 23:56:52,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:56:52" (1/1) ... [2018-10-26 23:56:52,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:56:52,309 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:56:52,432 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:56:52,434 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:56:52,449 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:56:52,462 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:56:52,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:52 WrapperNode [2018-10-26 23:56:52,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:56:52,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:56:52,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:56:52,464 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:56:52,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:52" (1/1) ... [2018-10-26 23:56:52,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:52" (1/1) ... [2018-10-26 23:56:52,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:56:52,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:56:52,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:56:52,485 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:56:52,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:52" (1/1) ... [2018-10-26 23:56:52,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:52" (1/1) ... [2018-10-26 23:56:52,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:52" (1/1) ... [2018-10-26 23:56:52,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:52" (1/1) ... [2018-10-26 23:56:52,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:52" (1/1) ... [2018-10-26 23:56:52,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:52" (1/1) ... [2018-10-26 23:56:52,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:52" (1/1) ... [2018-10-26 23:56:52,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:56:52,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:56:52,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:56:52,509 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:56:52,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc5a7adb-860b-4100-b876-8e4569dd6c26/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 [2018-10-26 23:56:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:56:52,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:56:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-10-26 23:56:52,639 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-10-26 23:56:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:56:52,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:56:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:56:52,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:56:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 23:56:52,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 23:56:53,094 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:56:53,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:56:53 BoogieIcfgContainer [2018-10-26 23:56:53,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:56:53,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:56:53,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:56:53,097 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:56:53,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:56:52" (1/3) ... [2018-10-26 23:56:53,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc1728a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:56:53, skipping insertion in model container [2018-10-26 23:56:53,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:52" (2/3) ... [2018-10-26 23:56:53,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc1728a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:56:53, skipping insertion in model container [2018-10-26 23:56:53,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:56:53" (3/3) ... [2018-10-26 23:56:53,104 INFO L112 eAbstractionObserver]: Analyzing ICFG trex04_true-unreach-call_false-termination.i [2018-10-26 23:56:53,122 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:56:53,130 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:56:53,145 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:56:53,175 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:56:53,175 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:56:53,175 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:56:53,176 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:56:53,176 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:56:53,176 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:56:53,176 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:56:53,176 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:56:53,192 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-10-26 23:56:53,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 23:56:53,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:56:53,199 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:56:53,201 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:56:53,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:56:53,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1294249659, now seen corresponding path program 1 times [2018-10-26 23:56:53,210 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:56:53,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:53,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:56:53,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:53,256 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:56:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:56:53,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:56:53,322 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:56:53,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 23:56:53,323 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:56:53,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 23:56:53,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 23:56:53,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 23:56:53,344 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2018-10-26 23:56:53,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:56:53,364 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2018-10-26 23:56:53,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 23:56:53,365 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2018-10-26 23:56:53,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:56:53,372 INFO L225 Difference]: With dead ends: 42 [2018-10-26 23:56:53,372 INFO L226 Difference]: Without dead ends: 25 [2018-10-26 23:56:53,375 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 23:56:53,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-26 23:56:53,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-26 23:56:53,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-26 23:56:53,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2018-10-26 23:56:53,413 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 16 [2018-10-26 23:56:53,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:56:53,413 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2018-10-26 23:56:53,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 23:56:53,414 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2018-10-26 23:56:53,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-26 23:56:53,416 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:56:53,416 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:56:53,417 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:56:53,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:56:53,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1720438887, now seen corresponding path program 1 times [2018-10-26 23:56:53,417 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:56:53,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:53,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:56:53,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:53,420 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:56:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:56:53,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:56:53,669 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:56:53,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 23:56:53,669 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:56:53,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:56:53,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:56:53,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:56:53,672 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand 5 states. [2018-10-26 23:56:53,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:56:53,751 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2018-10-26 23:56:53,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 23:56:53,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-10-26 23:56:53,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:56:53,752 INFO L225 Difference]: With dead ends: 25 [2018-10-26 23:56:53,752 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 23:56:53,753 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:56:53,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 23:56:53,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 23:56:53,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 23:56:53,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 23:56:53,758 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-10-26 23:56:53,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:56:53,759 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 23:56:53,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:56:53,759 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 23:56:53,759 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 23:56:53,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 23:56:53,816 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-26 23:56:53,816 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-26 23:56:53,816 INFO L425 ceAbstractionStarter]: For program point fooEXIT(lines 11 18) no Hoare annotation was computed. [2018-10-26 23:56:53,816 INFO L428 ceAbstractionStarter]: At program point fooENTRY(lines 11 18) the Hoare annotation is: true [2018-10-26 23:56:53,816 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-10-26 23:56:53,817 INFO L425 ceAbstractionStarter]: For program point L16-1(lines 11 18) no Hoare annotation was computed. [2018-10-26 23:56:53,817 INFO L425 ceAbstractionStarter]: For program point L15-2(lines 12 18) no Hoare annotation was computed. [2018-10-26 23:56:53,817 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-26 23:56:53,817 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-26 23:56:53,817 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-26 23:56:53,817 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-26 23:56:53,817 INFO L425 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-10-26 23:56:53,818 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 19 35) no Hoare annotation was computed. [2018-10-26 23:56:53,819 INFO L425 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-10-26 23:56:53,819 INFO L425 ceAbstractionStarter]: For program point L25-2(lines 20 35) no Hoare annotation was computed. [2018-10-26 23:56:53,820 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 19 35) no Hoare annotation was computed. [2018-10-26 23:56:53,820 INFO L425 ceAbstractionStarter]: For program point L30(lines 30 33) no Hoare annotation was computed. [2018-10-26 23:56:53,820 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 19 35) the Hoare annotation is: true [2018-10-26 23:56:53,820 INFO L425 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2018-10-26 23:56:53,820 INFO L425 ceAbstractionStarter]: For program point L30-2(lines 20 35) no Hoare annotation was computed. [2018-10-26 23:56:53,820 INFO L428 ceAbstractionStarter]: At program point L28-1(line 28) the Hoare annotation is: true [2018-10-26 23:56:53,820 INFO L421 ceAbstractionStarter]: At program point L30-3(lines 30 33) the Hoare annotation is: (<= main_~x~0 0) [2018-10-26 23:56:53,821 INFO L428 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: true [2018-10-26 23:56:53,821 INFO L425 ceAbstractionStarter]: For program point L28-3(lines 20 35) no Hoare annotation was computed. [2018-10-26 23:56:53,821 INFO L425 ceAbstractionStarter]: For program point L26-2(line 26) no Hoare annotation was computed. [2018-10-26 23:56:53,821 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-26 23:56:53,821 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-26 23:56:53,821 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-26 23:56:53,821 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-26 23:56:53,822 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-26 23:56:53,822 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-26 23:56:53,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:56:53 BoogieIcfgContainer [2018-10-26 23:56:53,825 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:56:53,825 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 23:56:53,825 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 23:56:53,826 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 23:56:53,829 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:56:53" (3/4) ... [2018-10-26 23:56:53,833 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-26 23:56:53,841 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-26 23:56:53,841 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2018-10-26 23:56:53,841 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-26 23:56:53,841 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-26 23:56:53,846 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-10-26 23:56:53,846 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-10-26 23:56:53,846 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-26 23:56:53,895 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_fc5a7adb-860b-4100-b876-8e4569dd6c26/bin-2019/utaipan/witness.graphml [2018-10-26 23:56:53,895 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 23:56:53,896 INFO L168 Benchmark]: Toolchain (without parser) took 1625.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.0 MB). Free memory was 959.7 MB in the beginning and 1.1 GB in the end (delta: -161.8 MB). Peak memory consumption was 11.2 MB. Max. memory is 11.5 GB. [2018-10-26 23:56:53,897 INFO L168 Benchmark]: CDTParser took 0.17 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. [2018-10-26 23:56:53,898 INFO L168 Benchmark]: CACSL2BoogieTranslator took 190.81 ms. Allocated memory is still 1.0 GB. Free memory was 959.7 MB in the beginning and 948.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 23:56:53,899 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.99 ms. Allocated memory is still 1.0 GB. Free memory is still 948.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:56:53,899 INFO L168 Benchmark]: Boogie Preprocessor took 23.94 ms. Allocated memory is still 1.0 GB. Free memory was 948.9 MB in the beginning and 946.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 23:56:53,900 INFO L168 Benchmark]: RCFGBuilder took 585.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.0 MB). Free memory was 946.2 MB in the beginning and 1.2 GB in the end (delta: -209.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2018-10-26 23:56:53,900 INFO L168 Benchmark]: TraceAbstraction took 730.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 30.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 11.5 GB. [2018-10-26 23:56:53,901 INFO L168 Benchmark]: Witness Printer took 69.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-10-26 23:56:53,905 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 190.81 ms. Allocated memory is still 1.0 GB. Free memory was 959.7 MB in the beginning and 948.9 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 20.99 ms. Allocated memory is still 1.0 GB. Free memory is still 948.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.94 ms. Allocated memory is still 1.0 GB. Free memory was 948.9 MB in the beginning and 946.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 585.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.0 MB). Free memory was 946.2 MB in the beginning and 1.2 GB in the end (delta: -209.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 730.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 30.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 11.5 GB. * Witness Printer took 69.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 68 SDtfs, 1 SDslu, 82 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 12 NumberOfFragments, 11 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 577 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...