./Ultimate.py --spec /storage/repos/svcomp/c/properties/no-overflow.prp --file /storage/repos/svcomp/c/termination-crafted/NestedRecursion_2a_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/NestedRecursion_2a_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 a87305f2bf70381ae4b40b8cfb9e2ca1c7e8a065 ........................................................................................................................................................................................................................................................... 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 21:25:29,211 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 21:25:29,213 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 21:25:29,224 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 21:25:29,224 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 21:25:29,225 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 21:25:29,227 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 21:25:29,229 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 21:25:29,231 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 21:25:29,232 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 21:25:29,233 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 21:25:29,233 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 21:25:29,234 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 21:25:29,235 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 21:25:29,236 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 21:25:29,237 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 21:25:29,238 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 21:25:29,240 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 21:25:29,243 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 21:25:29,244 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 21:25:29,246 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 21:25:29,247 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 21:25:29,250 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 21:25:29,251 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 21:25:29,251 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 21:25:29,252 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 21:25:29,253 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 21:25:29,254 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 21:25:29,255 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 21:25:29,256 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 21:25:29,257 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 21:25:29,258 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 21:25:29,258 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 21:25:29,258 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 21:25:29,260 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 21:25:29,260 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 21:25:29,261 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-01-14 21:25:29,286 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 21:25:29,286 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 21:25:29,288 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 21:25:29,288 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 21:25:29,288 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 21:25:29,288 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 21:25:29,288 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 21:25:29,289 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 21:25:29,289 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 21:25:29,289 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 21:25:29,289 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 21:25:29,289 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 21:25:29,289 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2019-01-14 21:25:29,290 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 21:25:29,290 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 21:25:29,290 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 21:25:29,290 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 21:25:29,290 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 21:25:29,291 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 21:25:29,292 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 21:25:29,292 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 21:25:29,292 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 21:25:29,292 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 21:25:29,293 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 21:25:29,293 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 21:25:29,293 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 21:25:29,293 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 -> a87305f2bf70381ae4b40b8cfb9e2ca1c7e8a065 [2019-01-14 21:25:29,348 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 21:25:29,361 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 21:25:29,365 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 21:25:29,366 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 21:25:29,367 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 21:25:29,367 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted/NestedRecursion_2a_false-no-overflow.c [2019-01-14 21:25:29,439 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5859f5b46/669644ce4ffe4bb598848c10c573a956/FLAGc2f154c18 [2019-01-14 21:25:29,897 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 21:25:29,898 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted/NestedRecursion_2a_false-no-overflow.c [2019-01-14 21:25:29,905 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5859f5b46/669644ce4ffe4bb598848c10c573a956/FLAGc2f154c18 [2019-01-14 21:25:30,283 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5859f5b46/669644ce4ffe4bb598848c10c573a956 [2019-01-14 21:25:30,287 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 21:25:30,289 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 21:25:30,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 21:25:30,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 21:25:30,294 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 21:25:30,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 09:25:30" (1/1) ... [2019-01-14 21:25:30,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60a29e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:30, skipping insertion in model container [2019-01-14 21:25:30,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 09:25:30" (1/1) ... [2019-01-14 21:25:30,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 21:25:30,328 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 21:25:30,536 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 21:25:30,541 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 21:25:30,559 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 21:25:30,577 INFO L195 MainTranslator]: Completed translation [2019-01-14 21:25:30,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:30 WrapperNode [2019-01-14 21:25:30,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 21:25:30,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 21:25:30,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 21:25:30,580 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 21:25:30,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:30" (1/1) ... [2019-01-14 21:25:30,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:30" (1/1) ... [2019-01-14 21:25:30,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 21:25:30,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 21:25:30,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 21:25:30,619 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 21:25:30,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:30" (1/1) ... [2019-01-14 21:25:30,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:30" (1/1) ... [2019-01-14 21:25:30,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:30" (1/1) ... [2019-01-14 21:25:30,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:30" (1/1) ... [2019-01-14 21:25:30,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:30" (1/1) ... [2019-01-14 21:25:30,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:30" (1/1) ... [2019-01-14 21:25:30,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:30" (1/1) ... [2019-01-14 21:25:30,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 21:25:30,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 21:25:30,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 21:25:30,640 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 21:25:30,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:30" (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 21:25:30,772 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-01-14 21:25:30,772 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-01-14 21:25:30,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 21:25:30,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 21:25:31,074 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 21:25:31,074 INFO L286 CfgBuilder]: Removed 4 assue(true) statements. [2019-01-14 21:25:31,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 09:25:31 BoogieIcfgContainer [2019-01-14 21:25:31,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 21:25:31,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 21:25:31,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 21:25:31,080 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 21:25:31,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 09:25:30" (1/3) ... [2019-01-14 21:25:31,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d014570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 09:25:31, skipping insertion in model container [2019-01-14 21:25:31,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:30" (2/3) ... [2019-01-14 21:25:31,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d014570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 09:25:31, skipping insertion in model container [2019-01-14 21:25:31,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 09:25:31" (3/3) ... [2019-01-14 21:25:31,085 INFO L112 eAbstractionObserver]: Analyzing ICFG NestedRecursion_2a_false-no-overflow.c [2019-01-14 21:25:31,095 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 21:25:31,104 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-01-14 21:25:31,117 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-01-14 21:25:31,145 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 21:25:31,146 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 21:25:31,146 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 21:25:31,146 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 21:25:31,147 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 21:25:31,147 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 21:25:31,147 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 21:25:31,147 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 21:25:31,147 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 21:25:31,165 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-01-14 21:25:31,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-01-14 21:25:31,170 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 21:25:31,171 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-01-14 21:25:31,173 INFO L423 AbstractCegarLoop]: === Iteration 1 === [gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 21:25:31,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 21:25:31,180 INFO L82 PathProgramCache]: Analyzing trace with hash 43226870, now seen corresponding path program 1 times [2019-01-14 21:25:31,182 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 21:25:31,182 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 21:25:31,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:25:31,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 21:25:31,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:25:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 21:25:31,451 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 21:25:31,454 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 21:25:31,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 21:25:31,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-14 21:25:31,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-14 21:25:31,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-14 21:25:31,486 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2019-01-14 21:25:31,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 21:25:31,670 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2019-01-14 21:25:31,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-01-14 21:25:31,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-01-14 21:25:31,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 21:25:31,682 INFO L225 Difference]: With dead ends: 32 [2019-01-14 21:25:31,682 INFO L226 Difference]: Without dead ends: 27 [2019-01-14 21:25:31,685 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-01-14 21:25:31,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-01-14 21:25:31,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2019-01-14 21:25:31,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-01-14 21:25:31,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2019-01-14 21:25:31,724 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 5 [2019-01-14 21:25:31,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 21:25:31,725 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2019-01-14 21:25:31,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-14 21:25:31,725 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2019-01-14 21:25:31,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-01-14 21:25:31,726 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 21:25:31,726 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-01-14 21:25:31,726 INFO L423 AbstractCegarLoop]: === Iteration 2 === [gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 21:25:31,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 21:25:31,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1340033008, now seen corresponding path program 1 times [2019-01-14 21:25:31,727 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 21:25:31,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 21:25:31,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:25:31,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 21:25:31,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:25:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 21:25:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 21:25:31,754 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 21:25:31,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 09:25:31 BoogieIcfgContainer [2019-01-14 21:25:31,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 21:25:31,774 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 21:25:31,774 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 21:25:31,774 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 21:25:31,775 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 09:25:31" (3/4) ... [2019-01-14 21:25:31,777 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-14 21:25:31,829 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 21:25:31,830 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 21:25:31,830 INFO L168 Benchmark]: Toolchain (without parser) took 1542.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -106.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 21:25:31,834 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 21:25:31,835 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.58 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-14 21:25:31,836 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.22 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 21:25:31,838 INFO L168 Benchmark]: Boogie Preprocessor took 20.69 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 21:25:31,839 INFO L168 Benchmark]: RCFGBuilder took 435.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -152.5 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2019-01-14 21:25:31,841 INFO L168 Benchmark]: TraceAbstraction took 696.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 11.5 GB. [2019-01-14 21:25:31,843 INFO L168 Benchmark]: Witness Printer took 55.51 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 21:25:31,847 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 288.58 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 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 40.22 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.69 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 435.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -152.5 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 696.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 11.5 GB. * Witness Printer took 55.51 ms. Allocated memory is still 1.1 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: 15]: integer overflow possible integer overflow possible We found a FailurePath: [L19] int x = __VERIFIER_nondet_int(); [L20] CALL g(x) VAL [\old(x)=-2147483648] [L12] COND FALSE !(x == 0) VAL [\old(x)=-2147483648, x=-2147483648] [L15] x - 1 VAL [\old(x)=-2147483648, x=-2147483648] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 2 error locations. UNSAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 20 SDslu, 33 SDs, 0 SdLazy, 29 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=1, 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 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...