./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/ldv-regression/test11_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/ldv-regression/test11_true-unreach-call_true-termination.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ff22ef1f1636739616d2fc1a8366a8c51606f555 ............................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-12 09:33:44,271 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 09:33:44,273 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 09:33:44,287 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-12 09:33:44,288 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-12 09:33:44,289 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-12 09:33:44,290 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-12 09:33:44,292 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-12 09:33:44,293 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-12 09:33:44,294 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-12 09:33:44,295 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-12 09:33:44,296 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-12 09:33:44,296 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-12 09:33:44,297 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-12 09:33:44,299 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-12 09:33:44,299 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-12 09:33:44,300 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-12 09:33:44,302 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-12 09:33:44,304 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-12 09:33:44,306 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-12 09:33:44,307 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-12 09:33:44,308 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-12 09:33:44,311 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-12 09:33:44,312 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 09:33:44,312 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 09:33:44,313 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 09:33:44,314 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 09:33:44,315 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 09:33:44,316 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 09:33:44,317 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 09:33:44,317 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 09:33:44,318 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 09:33:44,318 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 09:33:44,318 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 09:33:44,319 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 09:33:44,320 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 09:33:44,320 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-12 09:33:44,338 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 09:33:44,339 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 09:33:44,340 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 09:33:44,340 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 09:33:44,340 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 09:33:44,340 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 09:33:44,341 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 09:33:44,342 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-12 09:33:44,343 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 09:33:44,343 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 09:33:44,343 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 09:33:44,343 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 09:33:44,344 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 09:33:44,344 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 09:33:44,344 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 09:33:44,344 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 09:33:44,345 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 09:33:44,345 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 09:33:44,345 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 09:33:44,345 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 09:33:44,345 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 09:33:44,345 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 09:33:44,346 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 09:33:44,348 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 09:33:44,348 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 09:33:44,348 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-12 09:33:44,349 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 09:33:44,349 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-12 09:33:44,349 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 ! call(__VERIFIER_error())) ) 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff22ef1f1636739616d2fc1a8366a8c51606f555 [2019-01-12 09:33:44,394 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 09:33:44,407 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 09:33:44,411 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 09:33:44,412 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 09:33:44,413 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 09:33:44,414 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ldv-regression/test11_true-unreach-call_true-termination.c [2019-01-12 09:33:44,476 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a196b8ba5/f1aec73e3e924a809e9f37bd11241f37/FLAG8d77838fe [2019-01-12 09:33:44,971 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 09:33:44,971 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ldv-regression/test11_true-unreach-call_true-termination.c [2019-01-12 09:33:44,976 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a196b8ba5/f1aec73e3e924a809e9f37bd11241f37/FLAG8d77838fe [2019-01-12 09:33:45,316 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a196b8ba5/f1aec73e3e924a809e9f37bd11241f37 [2019-01-12 09:33:45,319 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 09:33:45,321 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 09:33:45,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 09:33:45,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 09:33:45,326 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 09:33:45,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 09:33:45" (1/1) ... [2019-01-12 09:33:45,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ba7b51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:33:45, skipping insertion in model container [2019-01-12 09:33:45,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 09:33:45" (1/1) ... [2019-01-12 09:33:45,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 09:33:45,355 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 09:33:45,530 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 09:33:45,543 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 09:33:45,561 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 09:33:45,580 INFO L195 MainTranslator]: Completed translation [2019-01-12 09:33:45,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:33:45 WrapperNode [2019-01-12 09:33:45,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 09:33:45,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 09:33:45,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 09:33:45,582 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 09:33:45,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:33:45" (1/1) ... [2019-01-12 09:33:45,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:33:45" (1/1) ... [2019-01-12 09:33:45,629 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 09:33:45,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 09:33:45,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 09:33:45,629 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 09:33:45,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:33:45" (1/1) ... [2019-01-12 09:33:45,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:33:45" (1/1) ... [2019-01-12 09:33:45,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:33:45" (1/1) ... [2019-01-12 09:33:45,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:33:45" (1/1) ... [2019-01-12 09:33:45,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:33:45" (1/1) ... [2019-01-12 09:33:45,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:33:45" (1/1) ... [2019-01-12 09:33:45,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:33:45" (1/1) ... [2019-01-12 09:33:45,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 09:33:45,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 09:33:45,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 09:33:45,664 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 09:33:45,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:33:45" (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 [2019-01-12 09:33:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-12 09:33:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 09:33:45,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 09:33:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-12 09:33:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-01-12 09:33:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-12 09:33:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-12 09:33:46,174 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 09:33:46,175 INFO L286 CfgBuilder]: Removed 6 assue(true) statements. [2019-01-12 09:33:46,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:33:46 BoogieIcfgContainer [2019-01-12 09:33:46,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 09:33:46,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 09:33:46,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 09:33:46,182 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 09:33:46,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 09:33:45" (1/3) ... [2019-01-12 09:33:46,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb2cc22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 09:33:46, skipping insertion in model container [2019-01-12 09:33:46,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:33:45" (2/3) ... [2019-01-12 09:33:46,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb2cc22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 09:33:46, skipping insertion in model container [2019-01-12 09:33:46,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:33:46" (3/3) ... [2019-01-12 09:33:46,188 INFO L112 eAbstractionObserver]: Analyzing ICFG test11_true-unreach-call_true-termination.c [2019-01-12 09:33:46,196 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 09:33:46,203 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-12 09:33:46,224 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-12 09:33:46,256 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 09:33:46,257 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 09:33:46,257 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 09:33:46,257 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 09:33:46,257 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 09:33:46,257 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 09:33:46,257 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 09:33:46,257 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 09:33:46,257 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 09:33:46,271 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-01-12 09:33:46,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-01-12 09:33:46,281 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:33:46,282 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:33:46,284 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:33:46,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:33:46,289 INFO L82 PathProgramCache]: Analyzing trace with hash 119352371, now seen corresponding path program 1 times [2019-01-12 09:33:46,291 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 09:33:46,291 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 09:33:46,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:33:46,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:33:46,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:33:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:33:46,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:33:46,502 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:33:46,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-12 09:33:46,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-12 09:33:46,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-12 09:33:46,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-12 09:33:46,519 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2019-01-12 09:33:46,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:33:46,757 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2019-01-12 09:33:46,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 09:33:46,760 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-01-12 09:33:46,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:33:46,774 INFO L225 Difference]: With dead ends: 22 [2019-01-12 09:33:46,774 INFO L226 Difference]: Without dead ends: 12 [2019-01-12 09:33:46,781 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-12 09:33:46,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-01-12 09:33:46,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-01-12 09:33:46,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-01-12 09:33:46,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-01-12 09:33:46,825 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2019-01-12 09:33:46,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:33:46,826 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-01-12 09:33:46,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-12 09:33:46,826 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-01-12 09:33:46,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-12 09:33:46,827 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:33:46,827 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:33:46,827 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:33:46,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:33:46,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1264891367, now seen corresponding path program 1 times [2019-01-12 09:33:46,828 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 09:33:46,829 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 09:33:46,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:33:46,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:33:46,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:33:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:33:47,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:33:47,136 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:33:47,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-01-12 09:33:47,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-12 09:33:47,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-12 09:33:47,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-01-12 09:33:47,139 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 6 states. [2019-01-12 09:33:47,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:33:47,371 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2019-01-12 09:33:47,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-12 09:33:47,373 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-01-12 09:33:47,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:33:47,373 INFO L225 Difference]: With dead ends: 14 [2019-01-12 09:33:47,373 INFO L226 Difference]: Without dead ends: 12 [2019-01-12 09:33:47,374 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-01-12 09:33:47,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-01-12 09:33:47,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-01-12 09:33:47,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-01-12 09:33:47,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-01-12 09:33:47,377 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2019-01-12 09:33:47,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:33:47,378 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-01-12 09:33:47,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-12 09:33:47,378 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2019-01-12 09:33:47,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-12 09:33:47,379 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:33:47,379 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:33:47,379 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:33:47,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:33:47,379 INFO L82 PathProgramCache]: Analyzing trace with hash -556924879, now seen corresponding path program 1 times [2019-01-12 09:33:47,379 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 09:33:47,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 09:33:47,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:33:47,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:33:47,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:33:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:33:47,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:33:47,454 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:33:47,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-12 09:33:47,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-12 09:33:47,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-12 09:33:47,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-12 09:33:47,456 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 4 states. [2019-01-12 09:33:47,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:33:47,486 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-01-12 09:33:47,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 09:33:47,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-01-12 09:33:47,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:33:47,488 INFO L225 Difference]: With dead ends: 12 [2019-01-12 09:33:47,489 INFO L226 Difference]: Without dead ends: 0 [2019-01-12 09:33:47,490 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-12 09:33:47,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-12 09:33:47,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-12 09:33:47,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-12 09:33:47,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-12 09:33:47,492 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-01-12 09:33:47,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:33:47,492 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-12 09:33:47,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-12 09:33:47,492 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-12 09:33:47,492 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-12 09:33:47,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-12 09:33:47,540 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-01-12 09:33:47,541 INFO L444 ceAbstractionStarter]: At program point L31(lines 12 32) the Hoare annotation is: (not (= ULTIMATE.start_main_~pc~0.base 0)) [2019-01-12 09:33:47,541 INFO L444 ceAbstractionStarter]: At program point L25(lines 12 32) the Hoare annotation is: false [2019-01-12 09:33:47,541 INFO L448 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-01-12 09:33:47,541 INFO L448 ceAbstractionStarter]: For program point L19-2(line 19) no Hoare annotation was computed. [2019-01-12 09:33:47,541 INFO L448 ceAbstractionStarter]: For program point L9(line 9) no Hoare annotation was computed. [2019-01-12 09:33:47,542 INFO L448 ceAbstractionStarter]: For program point L9-2(line 9) no Hoare annotation was computed. [2019-01-12 09:33:47,542 INFO L444 ceAbstractionStarter]: At program point L9-3(lines 7 10) the Hoare annotation is: (and (not (= ULTIMATE.start_main_~pc~0.base 0)) (= ULTIMATE.start_main_~pc~0.offset |ULTIMATE.start_main_~#c~0.offset|) (= ULTIMATE.start_main_~pc~0.base |ULTIMATE.start_main_~#c~0.base|)) [2019-01-12 09:33:47,542 INFO L448 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-01-12 09:33:47,542 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-01-12 09:33:47,542 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-01-12 09:33:47,542 INFO L448 ceAbstractionStarter]: For program point L24(lines 24 26) no Hoare annotation was computed. [2019-01-12 09:33:47,542 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 30) no Hoare annotation was computed. [2019-01-12 09:33:47,543 INFO L448 ceAbstractionStarter]: For program point L18(lines 18 19) no Hoare annotation was computed. [2019-01-12 09:33:47,543 INFO L448 ceAbstractionStarter]: For program point L18-2(lines 18 21) no Hoare annotation was computed. [2019-01-12 09:33:47,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 09:33:47 BoogieIcfgContainer [2019-01-12 09:33:47,565 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 09:33:47,566 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 09:33:47,566 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 09:33:47,566 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 09:33:47,566 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:33:46" (3/4) ... [2019-01-12 09:33:47,571 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-12 09:33:47,584 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-01-12 09:33:47,584 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-01-12 09:33:47,642 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-12 09:33:47,642 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 09:33:47,643 INFO L168 Benchmark]: Toolchain (without parser) took 2323.04 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 70.3 MB). Free memory was 952.7 MB in the beginning and 987.4 MB in the end (delta: -34.7 MB). Peak memory consumption was 35.5 MB. Max. memory is 11.5 GB. [2019-01-12 09:33:47,645 INFO L168 Benchmark]: CDTParser took 0.17 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. [2019-01-12 09:33:47,645 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.18 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. [2019-01-12 09:33:47,646 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.16 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. [2019-01-12 09:33:47,646 INFO L168 Benchmark]: Boogie Preprocessor took 34.74 ms. Allocated memory is still 1.0 GB. Free memory was 941.9 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-01-12 09:33:47,647 INFO L168 Benchmark]: RCFGBuilder took 513.17 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 70.3 MB). Free memory was 936.6 MB in the beginning and 1.0 GB in the end (delta: -106.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2019-01-12 09:33:47,648 INFO L168 Benchmark]: TraceAbstraction took 1386.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 994.4 MB in the end (delta: 49.1 MB). Peak memory consumption was 49.1 MB. Max. memory is 11.5 GB. [2019-01-12 09:33:47,649 INFO L168 Benchmark]: Witness Printer took 76.74 ms. Allocated memory is still 1.1 GB. Free memory was 994.4 MB in the beginning and 987.4 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-01-12 09:33:47,655 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 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 259.18 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 47.16 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 34.74 ms. Allocated memory is still 1.0 GB. Free memory was 941.9 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 513.17 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 70.3 MB). Free memory was 936.6 MB in the beginning and 1.0 GB in the end (delta: -106.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1386.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 994.4 MB in the end (delta: 49.1 MB). Peak memory consumption was 49.1 MB. Max. memory is 11.5 GB. * Witness Printer took 76.74 ms. Allocated memory is still 1.1 GB. Free memory was 994.4 MB in the beginning and 987.4 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 30]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: !(pc == 0) - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: (!(pc == 0) && pc == c) && pc == c - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. SAFE Result, 1.2s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 32 SDtfs, 26 SDslu, 39 SDs, 0 SdLazy, 24 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 4 NumberOfFragments, 16 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 974 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...