./Ultimate.py --spec /storage/repos/svcomp/c/properties/no-overflow.prp --file /storage/repos/svcomp/c/termination-crafted/Ackermann_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/Ackermann_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 5917ee93972738bd406398210804e4342159e8a8 ......................................................................................................................................................................................................................... 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 21:25:24,654 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 21:25:24,656 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 21:25:24,669 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 21:25:24,669 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 21:25:24,670 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 21:25:24,671 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 21:25:24,674 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 21:25:24,676 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 21:25:24,677 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 21:25:24,678 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 21:25:24,678 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 21:25:24,680 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 21:25:24,681 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 21:25:24,683 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 21:25:24,684 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 21:25:24,685 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 21:25:24,687 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 21:25:24,689 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 21:25:24,691 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 21:25:24,693 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 21:25:24,694 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 21:25:24,697 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 21:25:24,697 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 21:25:24,697 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 21:25:24,698 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 21:25:24,700 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 21:25:24,701 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 21:25:24,702 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 21:25:24,703 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 21:25:24,703 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 21:25:24,704 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 21:25:24,704 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 21:25:24,704 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 21:25:24,706 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 21:25:24,707 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 21:25:24,707 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-01-14 21:25:24,724 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 21:25:24,724 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 21:25:24,726 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 21:25:24,726 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 21:25:24,726 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 21:25:24,726 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 21:25:24,726 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 21:25:24,727 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 21:25:24,727 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 21:25:24,728 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 21:25:24,728 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 21:25:24,728 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 21:25:24,728 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2019-01-14 21:25:24,728 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 21:25:24,728 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 21:25:24,729 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 21:25:24,729 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 21:25:24,729 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 21:25:24,729 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 21:25:24,729 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 21:25:24,729 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 21:25:24,730 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 21:25:24,732 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 21:25:24,732 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 21:25:24,732 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 21:25:24,732 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 21:25:24,732 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 -> 5917ee93972738bd406398210804e4342159e8a8 [2019-01-14 21:25:24,771 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 21:25:24,784 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 21:25:24,788 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 21:25:24,789 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 21:25:24,790 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 21:25:24,791 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted/Ackermann_false-no-overflow.c [2019-01-14 21:25:24,849 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51dad3cbf/2015eb2283a34fe1944b53282c2bc421/FLAG3cb11799b [2019-01-14 21:25:25,321 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 21:25:25,322 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted/Ackermann_false-no-overflow.c [2019-01-14 21:25:25,328 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51dad3cbf/2015eb2283a34fe1944b53282c2bc421/FLAG3cb11799b [2019-01-14 21:25:25,690 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51dad3cbf/2015eb2283a34fe1944b53282c2bc421 [2019-01-14 21:25:25,694 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 21:25:25,698 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 21:25:25,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 21:25:25,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 21:25:25,708 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 21:25:25,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 09:25:25" (1/1) ... [2019-01-14 21:25:25,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b38cce6 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 21:25:25,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 09:25:25" (1/1) ... [2019-01-14 21:25:25,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 21:25:25,739 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 21:25:25,917 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 21:25:25,921 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 21:25:25,936 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 21:25:25,953 INFO L195 MainTranslator]: Completed translation [2019-01-14 21:25:25,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 09:25:25 WrapperNode [2019-01-14 21:25:25,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 21:25:25,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 21:25:25,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 21:25:25,955 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 21:25:25,966 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 21:25:25,971 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 21:25:25,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 21:25:25,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 21:25:25,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 21:25:25,993 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 21:25:26,004 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 21:25:26,004 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 21:25:26,005 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 21:25:26,006 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 21:25:26,009 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 21:25:26,012 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 21:25:26,012 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 21:25:26,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 21:25:26,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 21:25:26,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 21:25:26,015 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 21:25:26,016 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 21:25:26,143 INFO L130 BoogieDeclarations]: Found specification of procedure Ack [2019-01-14 21:25:26,143 INFO L138 BoogieDeclarations]: Found implementation of procedure Ack [2019-01-14 21:25:26,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 21:25:26,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 21:25:26,504 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 21:25:26,504 INFO L286 CfgBuilder]: Removed 4 assue(true) statements. [2019-01-14 21:25:26,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 09:25:26 BoogieIcfgContainer [2019-01-14 21:25:26,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 21:25:26,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 21:25:26,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 21:25:26,511 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 21:25:26,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 09:25:25" (1/3) ... [2019-01-14 21:25:26,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e94cad2 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 21:25:26,512 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 21:25:26,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e94cad2 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 21:25:26,513 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 21:25:26,516 INFO L112 eAbstractionObserver]: Analyzing ICFG Ackermann_false-no-overflow.c [2019-01-14 21:25:26,526 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 21:25:26,535 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-01-14 21:25:26,552 INFO L257 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-01-14 21:25:26,584 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 21:25:26,585 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 21:25:26,585 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 21:25:26,585 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 21:25:26,585 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 21:25:26,585 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 21:25:26,585 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 21:25:26,585 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 21:25:26,586 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 21:25:26,606 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-01-14 21:25:26,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-01-14 21:25:26,611 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 21:25:26,613 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-01-14 21:25:26,617 INFO L423 AbstractCegarLoop]: === Iteration 1 === [AckErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, AckErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, AckErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, AckErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, AckErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, AckErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, AckErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, AckErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 21:25:26,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 21:25:26,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1868849109, now seen corresponding path program 1 times [2019-01-14 21:25:26,626 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 21:25:26,627 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 21:25:26,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:25:26,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 21:25:26,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 21:25:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 21:25:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 21:25:26,755 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 21:25:26,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 09:25:26 BoogieIcfgContainer [2019-01-14 21:25:26,775 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 21:25:26,775 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 21:25:26,775 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 21:25:26,776 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 21:25:26,776 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 21:25:26,779 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-14 21:25:26,816 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 21:25:26,816 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 21:25:26,817 INFO L168 Benchmark]: Toolchain (without parser) took 1122.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -145.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 21:25:26,819 INFO L168 Benchmark]: CDTParser took 0.51 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 21:25:26,820 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.58 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-14 21:25:26,820 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.45 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 21:25:26,821 INFO L168 Benchmark]: Boogie Preprocessor took 21.75 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 21:25:26,821 INFO L168 Benchmark]: RCFGBuilder took 491.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -169.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-01-14 21:25:26,823 INFO L168 Benchmark]: TraceAbstraction took 267.57 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2019-01-14 21:25:26,824 INFO L168 Benchmark]: Witness Printer took 41.29 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 21:25:26,829 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 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 254.58 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.45 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 21.75 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 491.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -169.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 267.57 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Witness Printer took 41.29 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: 10]: integer overflow possible integer overflow possible We found a FailurePath: [L16] int x = __VERIFIER_nondet_int(); [L17] int y = __VERIFIER_nondet_int(); [L18] COND FALSE !(x < 0 || y < 0) [L21] CALL Ack(x, y) VAL [\old(m)=0, \old(n)=2147483647] [L10] COND TRUE m == 0 VAL [\old(m)=0, \old(n)=2147483647, m=0, n=2147483647] [L10] n+1 VAL [\old(m)=0, \old(n)=2147483647, m=0, n=2147483647] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 34 locations, 8 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=34occurred 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, 6 NumberOfCodeBlocks, 6 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...