./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 91b1670e 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 0.1.24-91b1670 [2018-11-28 23:06:04,331 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:06:04,333 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:06:04,347 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:06:04,348 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:06:04,350 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:06:04,353 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:06:04,356 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:06:04,359 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:06:04,361 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:06:04,364 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:06:04,364 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:06:04,365 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:06:04,366 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:06:04,367 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:06:04,368 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:06:04,369 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:06:04,370 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:06:04,374 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:06:04,375 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:06:04,376 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:06:04,377 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:06:04,380 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:06:04,380 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:06:04,380 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:06:04,381 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:06:04,382 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:06:04,383 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:06:04,384 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:06:04,385 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:06:04,386 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:06:04,386 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:06:04,386 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:06:04,387 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:06:04,388 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:06:04,389 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:06:04,389 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-28 23:06:04,413 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:06:04,414 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:06:04,415 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 23:06:04,416 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 23:06:04,417 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:06:04,418 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:06:04,418 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:06:04,419 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:06:04,419 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:06:04,419 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:06:04,419 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:06:04,419 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 23:06:04,420 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 23:06:04,421 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 23:06:04,421 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-28 23:06:04,422 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:06:04,422 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:06:04,422 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 23:06:04,422 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:06:04,422 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:06:04,422 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 23:06:04,425 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 23:06:04,425 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 23:06:04,425 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:06:04,425 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 23:06:04,425 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 23:06:04,426 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:06:04,426 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 23:06:04,426 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 23:06:04,427 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 [2018-11-28 23:06:04,493 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:06:04,510 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:06:04,518 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:06:04,520 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:06:04,520 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:06:04,521 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted/Bangalore_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-28 23:06:04,580 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea3e223de/20cb693f41464e83bc7a791d78ceb8b0/FLAGbac01f64d [2018-11-28 23:06:05,030 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:06:05,033 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted/Bangalore_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-28 23:06:05,041 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea3e223de/20cb693f41464e83bc7a791d78ceb8b0/FLAGbac01f64d [2018-11-28 23:06:05,393 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea3e223de/20cb693f41464e83bc7a791d78ceb8b0 [2018-11-28 23:06:05,396 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:06:05,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:06:05,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:06:05,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:06:05,403 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:06:05,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:06:05" (1/1) ... [2018-11-28 23:06:05,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b1b49a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:05, skipping insertion in model container [2018-11-28 23:06:05,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:06:05" (1/1) ... [2018-11-28 23:06:05,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:06:05,434 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:06:05,644 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:06:05,649 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:06:05,667 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:06:05,684 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:06:05,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:05 WrapperNode [2018-11-28 23:06:05,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:06:05,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:06:05,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:06:05,686 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:06:05,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:05" (1/1) ... [2018-11-28 23:06:05,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:05" (1/1) ... [2018-11-28 23:06:05,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:06:05,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:06:05,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:06:05,711 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:06:05,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:05" (1/1) ... [2018-11-28 23:06:05,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:05" (1/1) ... [2018-11-28 23:06:05,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:05" (1/1) ... [2018-11-28 23:06:05,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:05" (1/1) ... [2018-11-28 23:06:05,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:05" (1/1) ... [2018-11-28 23:06:05,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:05" (1/1) ... [2018-11-28 23:06:05,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:05" (1/1) ... [2018-11-28 23:06:05,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:06:05,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:06:05,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:06:05,740 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:06:05,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:05" (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 [2018-11-28 23:06:05,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 23:06:05,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 23:06:05,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:06:05,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:06:05,878 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 23:06:05,879 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 23:06:06,251 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:06:06,252 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 23:06:06,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:06:06 BoogieIcfgContainer [2018-11-28 23:06:06,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:06:06,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 23:06:06,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 23:06:06,258 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 23:06:06,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:06:05" (1/3) ... [2018-11-28 23:06:06,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9b0bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:06:06, skipping insertion in model container [2018-11-28 23:06:06,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:05" (2/3) ... [2018-11-28 23:06:06,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9b0bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:06:06, skipping insertion in model container [2018-11-28 23:06:06,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:06:06" (3/3) ... [2018-11-28 23:06:06,263 INFO L112 eAbstractionObserver]: Analyzing ICFG Bangalore_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-28 23:06:06,275 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 23:06:06,283 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-11-28 23:06:06,303 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-11-28 23:06:06,346 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:06:06,347 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 23:06:06,347 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 23:06:06,347 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 23:06:06,347 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:06:06,348 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:06:06,348 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 23:06:06,348 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:06:06,348 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 23:06:06,370 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2018-11-28 23:06:06,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-28 23:06:06,380 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:06,381 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:06,390 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:06,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:06,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1917932215, now seen corresponding path program 1 times [2018-11-28 23:06:06,401 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:06,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:06,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:06,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:06:06,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:06,644 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:06:06,644 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 23:06:06,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 23:06:06,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 23:06:06,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:06:06,664 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2018-11-28 23:06:06,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:06,949 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2018-11-28 23:06:06,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 23:06:06,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-11-28 23:06:06,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:06,962 INFO L225 Difference]: With dead ends: 33 [2018-11-28 23:06:06,962 INFO L226 Difference]: Without dead ends: 19 [2018-11-28 23:06:06,966 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:06:06,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-28 23:06:07,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2018-11-28 23:06:07,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-28 23:06:07,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-28 23:06:07,007 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2018-11-28 23:06:07,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:07,008 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-28 23:06:07,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 23:06:07,008 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-28 23:06:07,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 23:06:07,009 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:07,009 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:07,009 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:07,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:07,010 INFO L82 PathProgramCache]: Analyzing trace with hash 673643529, now seen corresponding path program 1 times [2018-11-28 23:06:07,010 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:07,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:07,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:07,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:06:07,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:07,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:07,083 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:06:07,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 23:06:07,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 23:06:07,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 23:06:07,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:06:07,086 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2018-11-28 23:06:07,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:07,146 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-11-28 23:06:07,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 23:06:07,148 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-11-28 23:06:07,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:07,149 INFO L225 Difference]: With dead ends: 13 [2018-11-28 23:06:07,149 INFO L226 Difference]: Without dead ends: 12 [2018-11-28 23:06:07,153 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:06:07,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-28 23:06:07,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-28 23:06:07,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-28 23:06:07,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-28 23:06:07,157 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2018-11-28 23:06:07,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:07,157 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-28 23:06:07,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 23:06:07,159 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-28 23:06:07,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 23:06:07,160 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:07,160 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:07,160 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:07,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:07,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1168628853, now seen corresponding path program 1 times [2018-11-28 23:06:07,161 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:07,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:07,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:07,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:06:07,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:07,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:07,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:07,253 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 [2018-11-28 23:06:07,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:06:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:07,296 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:07,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:07,637 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 23:06:07,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2018-11-28 23:06:07,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 23:06:07,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 23:06:07,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-28 23:06:07,639 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 8 states. [2018-11-28 23:06:07,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:07,783 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-11-28 23:06:07,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 23:06:07,785 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2018-11-28 23:06:07,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:07,786 INFO L225 Difference]: With dead ends: 13 [2018-11-28 23:06:07,786 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 23:06:07,787 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-28 23:06:07,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 23:06:07,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 23:06:07,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 23:06:07,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 23:06:07,790 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-11-28 23:06:07,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:07,791 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:06:07,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 23:06:07,791 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:06:07,791 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 23:06:07,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 23:06:07,905 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 23:06:07,906 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 23:06:07,906 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 23:06:07,906 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 23:06:07,906 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 23:06:07,906 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 23:06:07,907 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 13 24) the Hoare annotation is: true [2018-11-28 23:06:07,907 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 13 24) no Hoare annotation was computed. [2018-11-28 23:06:07,907 INFO L448 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-11-28 23:06:07,907 INFO L448 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-11-28 23:06:07,907 INFO L448 ceAbstractionStarter]: For program point L18(lines 18 22) no Hoare annotation was computed. [2018-11-28 23:06:07,907 INFO L444 ceAbstractionStarter]: At program point L19-2(lines 19 21) the Hoare annotation is: (and (<= main_~x~0 2147483647) (<= 1 main_~y~0) (<= main_~y~0 2147483647)) [2018-11-28 23:06:07,908 INFO L448 ceAbstractionStarter]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2018-11-28 23:06:07,908 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-28 23:06:07,908 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 13 24) no Hoare annotation was computed. [2018-11-28 23:06:07,908 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-28 23:06:07,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:06:07 BoogieIcfgContainer [2018-11-28 23:06:07,923 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 23:06:07,923 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:06:07,923 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:06:07,923 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:06:07,924 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:06:06" (3/4) ... [2018-11-28 23:06:07,928 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 23:06:07,935 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 23:06:07,935 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 23:06:07,939 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-28 23:06:07,939 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-28 23:06:07,940 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 23:06:07,982 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 23:06:07,982 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:06:07,983 INFO L168 Benchmark]: Toolchain (without parser) took 2586.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -104.4 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. [2018-11-28 23:06:07,985 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-11-28 23:06:07,988 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.34 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. [2018-11-28 23:06:07,989 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.21 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. [2018-11-28 23:06:07,990 INFO L168 Benchmark]: Boogie Preprocessor took 28.15 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. [2018-11-28 23:06:07,990 INFO L168 Benchmark]: RCFGBuilder took 512.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -175.7 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2018-11-28 23:06:07,991 INFO L168 Benchmark]: TraceAbstraction took 1668.90 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: 53.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 11.5 GB. [2018-11-28 23:06:07,995 INFO L168 Benchmark]: Witness Printer took 59.33 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:06:08,001 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 286.34 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 25.21 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 28.15 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 512.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -175.7 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1668.90 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: 53.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 11.5 GB. * Witness Printer took 59.33 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 16 locations, 2 error locations. SAFE Result, 1.5s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 26 SDtfs, 29 SDslu, 44 SDs, 0 SdLazy, 38 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 5 LocationsWithAnnotation, 5 PreInvPairs, 6 NumberOfFragments, 14 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 1019 SizeOfPredicates, 0 NumberOfNonLiveVariables, 26 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...