./Ultimate.py --spec /storage/repos/svcomp/c/properties/no-overflow.prp --file /storage/repos/svcomp/c/recursive-simple/id_b3_o2_false-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/recursive-simple/id_b3_o2_false-no-overflow.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-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 32bit --witnessprinter.graph.data.programhash a920ed9b3f96020f8bcfe1e60b1075faad4206fc .............................................................................................................................................................................................................................................................. 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 01:56:35,526 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 01:56:35,528 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 01:56:35,543 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 01:56:35,544 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 01:56:35,545 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 01:56:35,546 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 01:56:35,548 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 01:56:35,550 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 01:56:35,551 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 01:56:35,552 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 01:56:35,552 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 01:56:35,553 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 01:56:35,554 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 01:56:35,556 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 01:56:35,557 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 01:56:35,558 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 01:56:35,559 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 01:56:35,562 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 01:56:35,563 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 01:56:35,565 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 01:56:35,566 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 01:56:35,569 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 01:56:35,569 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 01:56:35,569 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 01:56:35,570 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 01:56:35,572 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 01:56:35,573 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 01:56:35,573 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 01:56:35,575 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 01:56:35,575 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 01:56:35,576 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 01:56:35,576 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 01:56:35,577 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 01:56:35,578 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 01:56:35,579 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 01:56:35,579 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-01-14 01:56:35,595 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 01:56:35,596 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 01:56:35,597 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 01:56:35,597 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 01:56:35,598 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 01:56:35,598 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 01:56:35,598 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 01:56:35,598 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 01:56:35,598 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 01:56:35,598 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 01:56:35,599 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 01:56:35,599 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 01:56:35,599 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 01:56:35,599 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 01:56:35,599 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2019-01-14 01:56:35,599 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 01:56:35,600 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 01:56:35,601 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-14 01:56:35,601 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 01:56:35,602 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 01:56:35,602 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 01:56:35,602 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 01:56:35,602 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 01:56:35,602 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 01:56:35,603 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 01:56:35,604 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 01:56:35,604 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 01:56:35,604 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 01:56:35,604 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 01:56:35,604 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 01:56:35,604 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a920ed9b3f96020f8bcfe1e60b1075faad4206fc [2019-01-14 01:56:35,640 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 01:56:35,655 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 01:56:35,659 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 01:56:35,661 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 01:56:35,661 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 01:56:35,662 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/recursive-simple/id_b3_o2_false-no-overflow.c [2019-01-14 01:56:35,721 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce9288a01/6107715f31ce4d3fa78fd04735d178da/FLAGed66e1178 [2019-01-14 01:56:36,128 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 01:56:36,129 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/recursive-simple/id_b3_o2_false-no-overflow.c [2019-01-14 01:56:36,135 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce9288a01/6107715f31ce4d3fa78fd04735d178da/FLAGed66e1178 [2019-01-14 01:56:36,521 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce9288a01/6107715f31ce4d3fa78fd04735d178da [2019-01-14 01:56:36,525 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 01:56:36,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 01:56:36,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 01:56:36,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 01:56:36,535 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 01:56:36,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 01:56:36" (1/1) ... [2019-01-14 01:56:36,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@605c0eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:56:36, skipping insertion in model container [2019-01-14 01:56:36,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 01:56:36" (1/1) ... [2019-01-14 01:56:36,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 01:56:36,564 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 01:56:36,784 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 01:56:36,791 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 01:56:36,811 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 01:56:36,824 INFO L195 MainTranslator]: Completed translation [2019-01-14 01:56:36,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:56:36 WrapperNode [2019-01-14 01:56:36,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 01:56:36,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 01:56:36,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 01:56:36,826 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 01:56:36,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:56:36" (1/1) ... [2019-01-14 01:56:36,841 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:56:36" (1/1) ... [2019-01-14 01:56:36,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 01:56:36,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 01:56:36,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 01:56:36,863 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 01:56:36,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:56:36" (1/1) ... [2019-01-14 01:56:36,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:56:36" (1/1) ... [2019-01-14 01:56:36,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:56:36" (1/1) ... [2019-01-14 01:56:36,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:56:36" (1/1) ... [2019-01-14 01:56:36,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:56:36" (1/1) ... [2019-01-14 01:56:36,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:56:36" (1/1) ... [2019-01-14 01:56:36,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:56:36" (1/1) ... [2019-01-14 01:56:36,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 01:56:36,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 01:56:36,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 01:56:36,893 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 01:56:36,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:56:36" (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 01:56:37,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 01:56:37,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 01:56:37,017 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-01-14 01:56:37,017 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-01-14 01:56:37,323 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 01:56:37,323 INFO L286 CfgBuilder]: Removed 4 assue(true) statements. [2019-01-14 01:56:37,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 01:56:37 BoogieIcfgContainer [2019-01-14 01:56:37,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 01:56:37,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 01:56:37,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 01:56:37,330 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 01:56:37,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 01:56:36" (1/3) ... [2019-01-14 01:56:37,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fce35d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 01:56:37, skipping insertion in model container [2019-01-14 01:56:37,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:56:36" (2/3) ... [2019-01-14 01:56:37,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fce35d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 01:56:37, skipping insertion in model container [2019-01-14 01:56:37,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 01:56:37" (3/3) ... [2019-01-14 01:56:37,335 INFO L112 eAbstractionObserver]: Analyzing ICFG id_b3_o2_false-no-overflow.c [2019-01-14 01:56:37,345 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 01:56:37,353 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-01-14 01:56:37,372 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-01-14 01:56:37,407 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 01:56:37,408 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 01:56:37,408 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 01:56:37,409 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 01:56:37,409 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 01:56:37,409 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 01:56:37,410 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 01:56:37,410 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 01:56:37,410 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 01:56:37,429 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-01-14 01:56:37,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-01-14 01:56:37,435 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 01:56:37,436 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-01-14 01:56:37,438 INFO L423 AbstractCegarLoop]: === Iteration 1 === [idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 01:56:37,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 01:56:37,447 INFO L82 PathProgramCache]: Analyzing trace with hash 30579597, now seen corresponding path program 1 times [2019-01-14 01:56:37,451 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 01:56:37,451 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 01:56:37,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:56:37,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 01:56:37,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:56:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 01:56:37,650 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 01:56:37,652 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 01:56:37,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 01:56:37,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-14 01:56:37,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-14 01:56:37,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-14 01:56:37,670 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2019-01-14 01:56:37,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 01:56:37,783 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2019-01-14 01:56:37,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-14 01:56:37,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-01-14 01:56:37,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 01:56:37,793 INFO L225 Difference]: With dead ends: 26 [2019-01-14 01:56:37,793 INFO L226 Difference]: Without dead ends: 16 [2019-01-14 01:56:37,796 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-01-14 01:56:37,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-01-14 01:56:37,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-01-14 01:56:37,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-01-14 01:56:37,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-01-14 01:56:37,833 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 5 [2019-01-14 01:56:37,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 01:56:37,834 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-01-14 01:56:37,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-14 01:56:37,834 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-01-14 01:56:37,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-01-14 01:56:37,835 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 01:56:37,835 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-01-14 01:56:37,835 INFO L423 AbstractCegarLoop]: === Iteration 2 === [idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 01:56:37,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 01:56:37,836 INFO L82 PathProgramCache]: Analyzing trace with hash 947967559, now seen corresponding path program 1 times [2019-01-14 01:56:37,836 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 01:56:37,836 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 01:56:37,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:56:37,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 01:56:37,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:56:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 01:56:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 01:56:37,879 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 01:56:37,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 01:56:37 BoogieIcfgContainer [2019-01-14 01:56:37,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 01:56:37,911 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 01:56:37,911 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 01:56:37,911 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 01:56:37,912 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 01:56:37" (3/4) ... [2019-01-14 01:56:37,914 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-14 01:56:37,974 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 01:56:37,975 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 01:56:37,976 INFO L168 Benchmark]: Toolchain (without parser) took 1449.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -131.0 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-01-14 01:56:37,978 INFO L168 Benchmark]: CDTParser took 0.17 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 01:56:37,979 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.19 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-14 01:56:37,980 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.40 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 01:56:37,982 INFO L168 Benchmark]: Boogie Preprocessor took 29.33 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 01:56:37,983 INFO L168 Benchmark]: RCFGBuilder took 433.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -168.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2019-01-14 01:56:37,984 INFO L168 Benchmark]: TraceAbstraction took 583.71 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: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2019-01-14 01:56:37,987 INFO L168 Benchmark]: Witness Printer took 64.22 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 01:56:37,994 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 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 297.19 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 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 36.40 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.33 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 433.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -168.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 583.71 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: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * Witness Printer took 64.22 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: 6]: integer overflow possible integer overflow possible We found a FailurePath: [L12] int input = __VERIFIER_nondet_int(); [L13] CALL id(input) VAL [\old(x)=-2147483648] [L5] COND FALSE !(x==0) VAL [\old(x)=-2147483648, x=-2147483648] [L6] x-1 VAL [\old(x)=-2147483648, x=-2147483648] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 4 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 16 SDtfs, 31 SDslu, 22 SDs, 0 SdLazy, 19 SolverSat, 3 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 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...