./Ultimate.py --spec /storage/repos/svcomp/c/properties/no-overflow.prp --file /storage/repos/svcomp/c/termination-crafted/2Nested_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/2Nested_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 4143c9f7038c4b8b5babb8095ecf96c00e7adcf9 ................................................................................................................................................................................................................... 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 21:25:24,526 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 21:25:24,528 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 21:25:24,550 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 21:25:24,551 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 21:25:24,552 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 21:25:24,555 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 21:25:24,556 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 21:25:24,558 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 21:25:24,559 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 21:25:24,560 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 21:25:24,560 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 21:25:24,561 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 21:25:24,562 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 21:25:24,564 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 21:25:24,564 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 21:25:24,565 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 21:25:24,567 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 21:25:24,569 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 21:25:24,571 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 21:25:24,572 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 21:25:24,573 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 21:25:24,576 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 21:25:24,576 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 21:25:24,576 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 21:25:24,578 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 21:25:24,579 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 21:25:24,580 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 21:25:24,581 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 21:25:24,582 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 21:25:24,582 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 21:25:24,583 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 21:25:24,583 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 21:25:24,584 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 21:25:24,585 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 21:25:24,586 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 21:25:24,586 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-01-14 21:25:24,602 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 21:25:24,602 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 21:25:24,604 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 21:25:24,604 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 21:25:24,604 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 21:25:24,604 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 21:25:24,605 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 21:25:24,605 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 21:25:24,605 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 21:25:24,605 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 21:25:24,605 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 21:25:24,605 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 21:25:24,606 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2019-01-14 21:25:24,606 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 21:25:24,606 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 21:25:24,606 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 21:25:24,606 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 21:25:24,607 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 21:25:24,607 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 21:25:24,607 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 21:25:24,607 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 21:25:24,607 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 21:25:24,607 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 21:25:24,608 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 21:25:24,608 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 21:25:24,608 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 21:25:24,608 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 -> 4143c9f7038c4b8b5babb8095ecf96c00e7adcf9 [2019-01-14 21:25:24,647 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 21:25:24,670 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 21:25:24,679 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 21:25:24,681 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 21:25:24,681 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 21:25:24,682 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted/2Nested_false-no-overflow.c [2019-01-14 21:25:24,744 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9b818202/1a9eb29ce6274b2caa9046c46a013813/FLAGd0ca38764 [2019-01-14 21:25:25,122 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 21:25:25,122 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted/2Nested_false-no-overflow.c [2019-01-14 21:25:25,128 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9b818202/1a9eb29ce6274b2caa9046c46a013813/FLAGd0ca38764 [2019-01-14 21:25:25,536 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9b818202/1a9eb29ce6274b2caa9046c46a013813 [2019-01-14 21:25:25,540 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 21:25:25,542 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 21:25:25,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 21:25:25,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 21:25:25,548 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 21:25:25,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 09:25:25" (1/1) ... [2019-01-14 21:25:25,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f785cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:25, skipping insertion in model container [2019-01-14 21:25:25,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 09:25:25" (1/1) ... [2019-01-14 21:25:25,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 21:25:25,578 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 21:25:25,803 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 21:25:25,809 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 21:25:25,827 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 21:25:25,842 INFO L195 MainTranslator]: Completed translation [2019-01-14 21:25:25,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:25 WrapperNode [2019-01-14 21:25:25,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 21:25:25,845 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 21:25:25,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 21:25:25,845 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 21:25:25,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:25" (1/1) ... [2019-01-14 21:25:25,861 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:25" (1/1) ... [2019-01-14 21:25:25,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 21:25:25,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 21:25:25,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 21:25:25,886 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 21:25:25,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:25" (1/1) ... [2019-01-14 21:25:25,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:25" (1/1) ... [2019-01-14 21:25:25,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:25" (1/1) ... [2019-01-14 21:25:25,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:25" (1/1) ... [2019-01-14 21:25:25,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:25" (1/1) ... [2019-01-14 21:25:25,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:25" (1/1) ... [2019-01-14 21:25:25,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:25" (1/1) ... [2019-01-14 21:25:25,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 21:25:25,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 21:25:25,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 21:25:25,915 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 21:25:25,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:25" (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 21:25:26,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 21:25:26,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 21:25:26,384 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 21:25:26,384 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2019-01-14 21:25:26,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 09:25:26 BoogieIcfgContainer [2019-01-14 21:25:26,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 21:25:26,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 21:25:26,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 21:25:26,390 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 21:25:26,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 09:25:25" (1/3) ... [2019-01-14 21:25:26,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30dd5f55 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 21:25:26,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:25" (2/3) ... [2019-01-14 21:25:26,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30dd5f55 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 21:25:26,392 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 21:25:26,394 INFO L112 eAbstractionObserver]: Analyzing ICFG 2Nested_false-no-overflow.c [2019-01-14 21:25:26,404 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 21:25:26,412 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-01-14 21:25:26,429 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-01-14 21:25:26,460 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 21:25:26,460 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 21:25:26,461 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 21:25:26,461 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 21:25:26,461 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 21:25:26,461 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 21:25:26,461 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 21:25:26,461 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 21:25:26,462 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 21:25:26,477 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-01-14 21:25:26,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-14 21:25:26,483 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 21:25:26,484 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-14 21:25:26,487 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 21:25:26,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 21:25:26,494 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-01-14 21:25:26,496 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 21:25:26,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 21:25:26,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:25:26,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 21:25:26,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:25:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 21:25:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 21:25:26,614 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 21:25:26,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 09:25:26 BoogieIcfgContainer [2019-01-14 21:25:26,634 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 21:25:26,634 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 21:25:26,635 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 21:25:26,635 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 21:25:26,636 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 21:25:26,638 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-14 21:25:26,681 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 21:25:26,681 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 21:25:26,682 INFO L168 Benchmark]: Toolchain (without parser) took 1140.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -145.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 21:25:26,684 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 21:25:26,685 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.89 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 937.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-01-14 21:25:26,686 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.92 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 21:25:26,686 INFO L168 Benchmark]: Boogie Preprocessor took 29.17 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 21:25:26,687 INFO L168 Benchmark]: RCFGBuilder took 470.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -170.5 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2019-01-14 21:25:26,688 INFO L168 Benchmark]: TraceAbstraction took 247.30 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-01-14 21:25:26,689 INFO L168 Benchmark]: Witness Printer took 46.57 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-01-14 21:25:26,695 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 300.89 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 937.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.92 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.17 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 470.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -170.5 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 247.30 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Witness Printer took 46.57 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 20]: integer overflow possible integer overflow possible We found a FailurePath: [L16] int x, y; [L17] x = __VERIFIER_nondet_int() [L18] y = __VERIFIER_nondet_int() [L19] COND TRUE x >= 0 [L20] x + y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...