./Ultimate.py --spec /storage/repos/svcomp/c/properties/no-overflow.prp --file /storage/repos/svcomp/c/termination-crafted/Copenhagen_disj_false-no-overflow.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/Copenhagen_disj_false-no-overflow.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 66086dde0b191c29902f344504ecd9e9745e5c48 ........................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-14 21:25:25,275 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 21:25:25,277 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 21:25:25,289 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 21:25:25,289 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 21:25:25,290 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 21:25:25,292 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 21:25:25,294 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 21:25:25,296 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 21:25:25,297 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 21:25:25,298 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 21:25:25,298 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 21:25:25,299 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 21:25:25,300 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 21:25:25,302 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 21:25:25,303 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 21:25:25,304 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 21:25:25,306 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 21:25:25,308 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 21:25:25,310 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 21:25:25,311 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 21:25:25,313 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 21:25:25,316 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 21:25:25,316 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 21:25:25,316 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 21:25:25,317 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 21:25:25,318 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 21:25:25,319 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 21:25:25,320 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 21:25:25,322 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 21:25:25,322 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 21:25:25,323 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 21:25:25,323 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 21:25:25,324 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 21:25:25,325 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 21:25:25,326 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 21:25:25,327 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-01-14 21:25:25,345 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 21:25:25,345 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 21:25:25,347 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 21:25:25,347 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 21:25:25,347 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 21:25:25,347 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 21:25:25,348 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 21:25:25,348 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 21:25:25,348 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 21:25:25,348 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 21:25:25,348 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 21:25:25,348 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 21:25:25,349 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2019-01-14 21:25:25,349 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 21:25:25,349 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 21:25:25,349 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 21:25:25,349 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 21:25:25,350 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 21:25:25,351 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 21:25:25,352 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 21:25:25,352 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 21:25:25,352 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 21:25:25,352 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 21:25:25,352 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 21:25:25,352 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 21:25:25,354 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 21:25:25,354 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 -> 66086dde0b191c29902f344504ecd9e9745e5c48 [2019-01-14 21:25:25,391 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 21:25:25,403 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 21:25:25,407 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 21:25:25,409 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 21:25:25,410 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 21:25:25,410 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted/Copenhagen_disj_false-no-overflow.c [2019-01-14 21:25:25,481 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4c746f91/75afe9c929d7462a840dbb826f024341/FLAGce3cde6f7 [2019-01-14 21:25:25,925 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 21:25:25,926 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted/Copenhagen_disj_false-no-overflow.c [2019-01-14 21:25:25,933 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4c746f91/75afe9c929d7462a840dbb826f024341/FLAGce3cde6f7 [2019-01-14 21:25:26,276 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4c746f91/75afe9c929d7462a840dbb826f024341 [2019-01-14 21:25:26,280 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 21:25:26,281 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 21:25:26,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 21:25:26,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 21:25:26,287 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 21:25:26,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 09:25:26" (1/1) ... [2019-01-14 21:25:26,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fd81de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:26, skipping insertion in model container [2019-01-14 21:25:26,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 09:25:26" (1/1) ... [2019-01-14 21:25:26,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 21:25:26,316 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 21:25:26,470 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 21:25:26,475 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 21:25:26,491 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 21:25:26,505 INFO L195 MainTranslator]: Completed translation [2019-01-14 21:25:26,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:26 WrapperNode [2019-01-14 21:25:26,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 21:25:26,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 21:25:26,507 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 21:25:26,507 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 21:25:26,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:26" (1/1) ... [2019-01-14 21:25:26,522 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:26" (1/1) ... [2019-01-14 21:25:26,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 21:25:26,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 21:25:26,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 21:25:26,543 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 21:25:26,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:26" (1/1) ... [2019-01-14 21:25:26,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:26" (1/1) ... [2019-01-14 21:25:26,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:26" (1/1) ... [2019-01-14 21:25:26,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:26" (1/1) ... [2019-01-14 21:25:26,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:26" (1/1) ... [2019-01-14 21:25:26,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:26" (1/1) ... [2019-01-14 21:25:26,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:26" (1/1) ... [2019-01-14 21:25:26,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 21:25:26,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 21:25:26,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 21:25:26,565 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 21:25:26,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:26" (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 21:25:26,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 21:25:26,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 21:25:26,860 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 21:25:26,861 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2019-01-14 21:25:26,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 09:25:26 BoogieIcfgContainer [2019-01-14 21:25:26,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 21:25:26,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 21:25:26,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 21:25:26,866 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 21:25:26,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 09:25:26" (1/3) ... [2019-01-14 21:25:26,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c28b616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 09:25:26, skipping insertion in model container [2019-01-14 21:25:26,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:26" (2/3) ... [2019-01-14 21:25:26,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c28b616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 09:25:26, skipping insertion in model container [2019-01-14 21:25:26,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 09:25:26" (3/3) ... [2019-01-14 21:25:26,870 INFO L112 eAbstractionObserver]: Analyzing ICFG Copenhagen_disj_false-no-overflow.c [2019-01-14 21:25:26,879 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 21:25:26,890 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-01-14 21:25:26,903 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-01-14 21:25:26,931 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 21:25:26,932 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 21:25:26,932 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 21:25:26,932 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 21:25:26,932 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 21:25:26,932 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 21:25:26,932 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 21:25:26,933 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 21:25:26,933 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 21:25:26,947 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-01-14 21:25:26,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-14 21:25:26,954 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 21:25:26,955 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-14 21:25:26,957 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 21:25:26,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 21:25:26,963 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-01-14 21:25:26,965 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 21:25:26,966 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 21:25:27,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:25:27,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 21:25:27,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:25:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 21:25:27,115 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 21:25:27,119 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 21:25:27,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-01-14 21:25:27,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 21:25:27,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 21:25:27,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 21:25:27,160 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-01-14 21:25:27,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 21:25:27,289 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2019-01-14 21:25:27,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 21:25:27,290 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-01-14 21:25:27,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 21:25:27,304 INFO L225 Difference]: With dead ends: 26 [2019-01-14 21:25:27,304 INFO L226 Difference]: Without dead ends: 17 [2019-01-14 21:25:27,307 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 21:25:27,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-01-14 21:25:27,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2019-01-14 21:25:27,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-01-14 21:25:27,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-01-14 21:25:27,337 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2019-01-14 21:25:27,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 21:25:27,337 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-01-14 21:25:27,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 21:25:27,338 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-01-14 21:25:27,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-01-14 21:25:27,338 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 21:25:27,338 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-01-14 21:25:27,339 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 21:25:27,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 21:25:27,339 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2019-01-14 21:25:27,340 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 21:25:27,340 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 21:25:27,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:25:27,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 21:25:27,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:25:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 21:25:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 21:25:27,377 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 21:25:27,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 09:25:27 BoogieIcfgContainer [2019-01-14 21:25:27,400 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 21:25:27,400 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 21:25:27,400 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 21:25:27,401 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 21:25:27,402 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 09:25:26" (3/4) ... [2019-01-14 21:25:27,404 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-14 21:25:27,466 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 21:25:27,467 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 21:25:27,468 INFO L168 Benchmark]: Toolchain (without parser) took 1187.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -152.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 21:25:27,470 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 21:25:27,470 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.94 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-14 21:25:27,471 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.81 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 21:25:27,474 INFO L168 Benchmark]: Boogie Preprocessor took 21.12 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 21:25:27,475 INFO L168 Benchmark]: RCFGBuilder took 298.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -183.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2019-01-14 21:25:27,476 INFO L168 Benchmark]: TraceAbstraction took 536.75 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: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2019-01-14 21:25:27,477 INFO L168 Benchmark]: Witness Printer took 66.57 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. [2019-01-14 21:25:27,486 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 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 223.94 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.2 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 35.81 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.12 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 298.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -183.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 536.75 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: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * Witness Printer took 66.57 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: - CounterExampleResult [Line: 18]: integer overflow possible integer overflow possible We found a FailurePath: [L13] int x, y, oldx; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] COND TRUE x >= 0 || y >= 0 [L17] oldx = x [L18] y - 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9 SDtfs, 10 SDslu, 3 SDs, 0 SdLazy, 10 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 1 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...