./Ultimate.py --spec /storage/repos/svcomp/c/properties/no-overflow.prp --file /storage/repos/svcomp/c/termination-crafted/Bangalore_true-no-overflow_true-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0ed9222f Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/termination-crafted/Bangalore_true-no-overflow_true-termination_true-valid-memsafety.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9c51224894dcd32e556532086a33c2900554a2d1 ........................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-14 01:16:42,749 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 01:16:42,753 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 01:16:42,765 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 01:16:42,766 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 01:16:42,767 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 01:16:42,768 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 01:16:42,771 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 01:16:42,773 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 01:16:42,774 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 01:16:42,775 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 01:16:42,775 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 01:16:42,776 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 01:16:42,777 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 01:16:42,779 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 01:16:42,780 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 01:16:42,781 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 01:16:42,782 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 01:16:42,785 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 01:16:42,788 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 01:16:42,789 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 01:16:42,790 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 01:16:42,793 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 01:16:42,793 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 01:16:42,794 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 01:16:42,795 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 01:16:42,796 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 01:16:42,797 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 01:16:42,798 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 01:16:42,800 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 01:16:42,800 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 01:16:42,801 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 01:16:42,801 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 01:16:42,801 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 01:16:42,802 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 01:16:42,803 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 01:16:42,804 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-01-14 01:16:42,822 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 01:16:42,823 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 01:16:42,824 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 01:16:42,824 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 01:16:42,824 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 01:16:42,825 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 01:16:42,825 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 01:16:42,825 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 01:16:42,825 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 01:16:42,825 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 01:16:42,825 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 01:16:42,826 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 01:16:42,827 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2019-01-14 01:16:42,827 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 01:16:42,827 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-14 01:16:42,827 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 01:16:42,828 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 01:16:42,828 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 01:16:42,828 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 01:16:42,828 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 01:16:42,828 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 01:16:42,829 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 01:16:42,830 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 01:16:42,830 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 01:16:42,830 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 01:16:42,830 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 01:16:42,831 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 01:16:42,831 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c51224894dcd32e556532086a33c2900554a2d1 [2019-01-14 01:16:42,868 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 01:16:42,881 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 01:16:42,884 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 01:16:42,886 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 01:16:42,887 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 01:16:42,888 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted/Bangalore_true-no-overflow_true-termination_true-valid-memsafety.c [2019-01-14 01:16:42,949 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dcf294a9/76eafd0fbdc54e24826d8bc4b1274088/FLAG7d4dfb824 [2019-01-14 01:16:43,373 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 01:16:43,373 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted/Bangalore_true-no-overflow_true-termination_true-valid-memsafety.c [2019-01-14 01:16:43,381 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dcf294a9/76eafd0fbdc54e24826d8bc4b1274088/FLAG7d4dfb824 [2019-01-14 01:16:43,742 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dcf294a9/76eafd0fbdc54e24826d8bc4b1274088 [2019-01-14 01:16:43,747 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 01:16:43,749 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 01:16:43,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 01:16:43,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 01:16:43,761 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 01:16:43,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 01:16:43" (1/1) ... [2019-01-14 01:16:43,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ebc1e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:16:43, skipping insertion in model container [2019-01-14 01:16:43,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 01:16:43" (1/1) ... [2019-01-14 01:16:43,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 01:16:43,796 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 01:16:43,963 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 01:16:43,968 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 01:16:43,983 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 01:16:43,998 INFO L195 MainTranslator]: Completed translation [2019-01-14 01:16:43,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:16:43 WrapperNode [2019-01-14 01:16:43,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 01:16:43,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 01:16:44,000 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 01:16:44,000 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 01:16:44,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:16:43" (1/1) ... [2019-01-14 01:16:44,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:16:43" (1/1) ... [2019-01-14 01:16:44,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 01:16:44,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 01:16:44,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 01:16:44,036 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 01:16:44,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:16:43" (1/1) ... [2019-01-14 01:16:44,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:16:43" (1/1) ... [2019-01-14 01:16:44,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:16:43" (1/1) ... [2019-01-14 01:16:44,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:16:43" (1/1) ... [2019-01-14 01:16:44,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:16:43" (1/1) ... [2019-01-14 01:16:44,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:16:43" (1/1) ... [2019-01-14 01:16:44,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:16:43" (1/1) ... [2019-01-14 01:16:44,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 01:16:44,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 01:16:44,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 01:16:44,053 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 01:16:44,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:16:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 01:16:44,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 01:16:44,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 01:16:44,499 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 01:16:44,499 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2019-01-14 01:16:44,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 01:16:44 BoogieIcfgContainer [2019-01-14 01:16:44,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 01:16:44,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 01:16:44,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 01:16:44,505 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 01:16:44,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 01:16:43" (1/3) ... [2019-01-14 01:16:44,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726d0963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 01:16:44, skipping insertion in model container [2019-01-14 01:16:44,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:16:43" (2/3) ... [2019-01-14 01:16:44,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726d0963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 01:16:44, skipping insertion in model container [2019-01-14 01:16:44,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 01:16:44" (3/3) ... [2019-01-14 01:16:44,509 INFO L112 eAbstractionObserver]: Analyzing ICFG Bangalore_true-no-overflow_true-termination_true-valid-memsafety.c [2019-01-14 01:16:44,517 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 01:16:44,523 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-01-14 01:16:44,538 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-01-14 01:16:44,568 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 01:16:44,568 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 01:16:44,568 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 01:16:44,568 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 01:16:44,569 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 01:16:44,569 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 01:16:44,569 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 01:16:44,569 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 01:16:44,569 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 01:16:44,580 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-01-14 01:16:44,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-01-14 01:16:44,585 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 01:16:44,586 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-01-14 01:16:44,588 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 01:16:44,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 01:16:44,594 INFO L82 PathProgramCache]: Analyzing trace with hash 957573, now seen corresponding path program 1 times [2019-01-14 01:16:44,595 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 01:16:44,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 01:16:44,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:16:44,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 01:16:44,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:16:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 01:16:44,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 01:16:44,836 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 01:16:44,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 01:16:44,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 01:16:44,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 01:16:44,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-14 01:16:44,859 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2019-01-14 01:16:45,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 01:16:45,227 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2019-01-14 01:16:45,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-14 01:16:45,229 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-01-14 01:16:45,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 01:16:45,238 INFO L225 Difference]: With dead ends: 28 [2019-01-14 01:16:45,239 INFO L226 Difference]: Without dead ends: 15 [2019-01-14 01:16:45,242 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-14 01:16:45,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-01-14 01:16:45,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 9. [2019-01-14 01:16:45,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-01-14 01:16:45,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-01-14 01:16:45,275 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 4 [2019-01-14 01:16:45,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 01:16:45,276 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-01-14 01:16:45,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 01:16:45,276 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-01-14 01:16:45,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-01-14 01:16:45,276 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 01:16:45,276 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-01-14 01:16:45,277 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 01:16:45,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 01:16:45,277 INFO L82 PathProgramCache]: Analyzing trace with hash 29684810, now seen corresponding path program 1 times [2019-01-14 01:16:45,278 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 01:16:45,278 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 01:16:45,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:16:45,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 01:16:45,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:16:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 01:16:45,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 01:16:45,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 01:16:45,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 01:16:45,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 01:16:45,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 01:16:45,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-14 01:16:45,339 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2019-01-14 01:16:45,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 01:16:45,389 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2019-01-14 01:16:45,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-14 01:16:45,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-01-14 01:16:45,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 01:16:45,390 INFO L225 Difference]: With dead ends: 9 [2019-01-14 01:16:45,390 INFO L226 Difference]: Without dead ends: 8 [2019-01-14 01:16:45,391 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-14 01:16:45,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-01-14 01:16:45,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-01-14 01:16:45,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-01-14 01:16:45,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-01-14 01:16:45,394 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2019-01-14 01:16:45,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 01:16:45,394 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-01-14 01:16:45,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 01:16:45,395 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-01-14 01:16:45,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-01-14 01:16:45,395 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 01:16:45,395 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-01-14 01:16:45,396 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 01:16:45,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 01:16:45,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1537667284, now seen corresponding path program 1 times [2019-01-14 01:16:45,396 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 01:16:45,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 01:16:45,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:16:45,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 01:16:45,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:16:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 01:16:45,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 01:16:45,489 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-14 01:16:45,489 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-01-14 01:16:45,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 01:16:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 01:16:45,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 01:16:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 01:16:45,747 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-01-14 01:16:45,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2019-01-14 01:16:45,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-01-14 01:16:45,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-01-14 01:16:45,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-01-14 01:16:45,748 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 8 states. [2019-01-14 01:16:45,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 01:16:45,906 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2019-01-14 01:16:45,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-14 01:16:45,907 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2019-01-14 01:16:45,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 01:16:45,908 INFO L225 Difference]: With dead ends: 9 [2019-01-14 01:16:45,908 INFO L226 Difference]: Without dead ends: 0 [2019-01-14 01:16:45,908 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-01-14 01:16:45,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-14 01:16:45,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-14 01:16:45,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-14 01:16:45,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-14 01:16:45,909 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-01-14 01:16:45,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 01:16:45,910 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 01:16:45,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-01-14 01:16:45,910 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-14 01:16:45,910 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-14 01:16:45,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-14 01:16:46,032 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-01-14 01:16:46,032 INFO L444 ceAbstractionStarter]: At program point L23(lines 13 24) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2019-01-14 01:16:46,032 INFO L444 ceAbstractionStarter]: At program point L19-2(lines 19 21) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 2147483647)) [2019-01-14 01:16:46,032 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-01-14 01:16:46,033 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-01-14 01:16:46,033 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-01-14 01:16:46,033 INFO L448 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2019-01-14 01:16:46,033 INFO L448 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-01-14 01:16:46,033 INFO L448 ceAbstractionStarter]: For program point L18(lines 18 22) no Hoare annotation was computed. [2019-01-14 01:16:46,033 INFO L448 ceAbstractionStarter]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2019-01-14 01:16:46,033 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-01-14 01:16:46,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 01:16:46 BoogieIcfgContainer [2019-01-14 01:16:46,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 01:16:46,045 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 01:16:46,045 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 01:16:46,045 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 01:16:46,046 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 01:16:44" (3/4) ... [2019-01-14 01:16:46,049 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-14 01:16:46,060 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-01-14 01:16:46,060 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-01-14 01:16:46,102 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 01:16:46,102 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 01:16:46,103 INFO L168 Benchmark]: Toolchain (without parser) took 2355.55 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 952.7 MB in the beginning and 1.0 GB in the end (delta: -77.3 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. [2019-01-14 01:16:46,105 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 01:16:46,106 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.55 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-14 01:16:46,107 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.13 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 01:16:46,107 INFO L168 Benchmark]: Boogie Preprocessor took 16.78 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 01:16:46,108 INFO L168 Benchmark]: RCFGBuilder took 447.78 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -141.0 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-01-14 01:16:46,109 INFO L168 Benchmark]: TraceAbstraction took 1543.05 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 11.5 GB. [2019-01-14 01:16:46,109 INFO L168 Benchmark]: Witness Printer took 57.56 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 01:16:46,113 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 248.55 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 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 36.13 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.78 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 447.78 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -141.0 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1543.05 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 11.5 GB. * Witness Printer took 57.56 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (x <= 2147483647 && 1 <= y) && y <= 2147483647 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: x <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 2 error locations. SAFE Result, 1.4s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 13 SDtfs, 31 SDslu, 3 SDs, 0 SdLazy, 37 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 13 HoareAnnotationTreeSize, 2 FomulaSimplifications, 10 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 499 SizeOfPredicates, 0 NumberOfNonLiveVariables, 18 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...