./Ultimate.py --spec /storage/repos/svcomp/c/properties/no-overflow.prp --file /storage/repos/svcomp/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2e94e6aa 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/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i -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 0b1dd98d7879c6a852477263dd33a13d229a6eb3 ......................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2019-01-01 21:15:56,381 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-01 21:15:56,383 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-01 21:15:56,396 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-01 21:15:56,396 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-01 21:15:56,397 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-01 21:15:56,400 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-01 21:15:56,404 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-01 21:15:56,410 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-01 21:15:56,411 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-01 21:15:56,415 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-01 21:15:56,416 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-01 21:15:56,417 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-01 21:15:56,420 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-01 21:15:56,421 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-01 21:15:56,424 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-01 21:15:56,424 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-01 21:15:56,426 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-01 21:15:56,429 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-01 21:15:56,430 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-01 21:15:56,431 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-01 21:15:56,433 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-01 21:15:56,435 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-01 21:15:56,435 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-01 21:15:56,436 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-01 21:15:56,436 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-01 21:15:56,437 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-01 21:15:56,438 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-01 21:15:56,439 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-01 21:15:56,440 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-01 21:15:56,440 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-01 21:15:56,441 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-01 21:15:56,441 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-01 21:15:56,442 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-01 21:15:56,443 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-01 21:15:56,443 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-01 21:15:56,444 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-01-01 21:15:56,459 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-01 21:15:56,459 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-01 21:15:56,460 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-01 21:15:56,461 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-01 21:15:56,461 INFO L133 SettingsManager]: * Use SBE=true [2019-01-01 21:15:56,461 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-01 21:15:56,461 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-01 21:15:56,461 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-01 21:15:56,462 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-01 21:15:56,462 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-01 21:15:56,462 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-01 21:15:56,462 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-01 21:15:56,462 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-01 21:15:56,463 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-01 21:15:56,463 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2019-01-01 21:15:56,463 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-01 21:15:56,463 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-01 21:15:56,463 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-01 21:15:56,463 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-01 21:15:56,467 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-01 21:15:56,467 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-01 21:15:56,467 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-01 21:15:56,467 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-01 21:15:56,467 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-01 21:15:56,468 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-01 21:15:56,468 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-01 21:15:56,468 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-01 21:15:56,468 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-01 21:15:56,468 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-01 21:15:56,469 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-01 21:15:56,469 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 -> 0b1dd98d7879c6a852477263dd33a13d229a6eb3 [2019-01-01 21:15:56,511 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-01 21:15:56,524 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-01 21:15:56,528 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-01 21:15:56,529 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-01 21:15:56,530 INFO L276 PluginConnector]: CDTParser initialized [2019-01-01 21:15:56,530 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i [2019-01-01 21:15:56,590 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a42ae4d03/cb6901d5997545ffa65a738f00bedb53/FLAG603e6e5cf [2019-01-01 21:15:57,035 INFO L307 CDTParser]: Found 1 translation units. [2019-01-01 21:15:57,036 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i [2019-01-01 21:15:57,042 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a42ae4d03/cb6901d5997545ffa65a738f00bedb53/FLAG603e6e5cf [2019-01-01 21:15:57,392 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a42ae4d03/cb6901d5997545ffa65a738f00bedb53 [2019-01-01 21:15:57,395 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-01 21:15:57,397 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-01 21:15:57,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-01 21:15:57,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-01 21:15:57,402 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-01 21:15:57,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 09:15:57" (1/1) ... [2019-01-01 21:15:57,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79fa1603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:15:57, skipping insertion in model container [2019-01-01 21:15:57,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 09:15:57" (1/1) ... [2019-01-01 21:15:57,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-01 21:15:57,440 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-01 21:15:57,657 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 21:15:57,666 INFO L191 MainTranslator]: Completed pre-run [2019-01-01 21:15:57,695 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 21:15:57,716 INFO L195 MainTranslator]: Completed translation [2019-01-01 21:15:57,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:15:57 WrapperNode [2019-01-01 21:15:57,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-01 21:15:57,718 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-01 21:15:57,718 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-01 21:15:57,718 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-01 21:15:57,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:15:57" (1/1) ... [2019-01-01 21:15:57,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:15:57" (1/1) ... [2019-01-01 21:15:57,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-01 21:15:57,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-01 21:15:57,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-01 21:15:57,763 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-01 21:15:57,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:15:57" (1/1) ... [2019-01-01 21:15:57,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:15:57" (1/1) ... [2019-01-01 21:15:57,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:15:57" (1/1) ... [2019-01-01 21:15:57,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:15:57" (1/1) ... [2019-01-01 21:15:57,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:15:57" (1/1) ... [2019-01-01 21:15:57,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:15:57" (1/1) ... [2019-01-01 21:15:57,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:15:57" (1/1) ... [2019-01-01 21:15:57,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-01 21:15:57,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-01 21:15:57,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-01 21:15:57,803 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-01 21:15:57,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:15:57" (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 [2019-01-01 21:15:57,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-01 21:15:57,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-01 21:15:58,307 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-01 21:15:58,308 INFO L280 CfgBuilder]: Removed 7 assue(true) statements. [2019-01-01 21:15:58,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:15:58 BoogieIcfgContainer [2019-01-01 21:15:58,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-01 21:15:58,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-01 21:15:58,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-01 21:15:58,313 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-01 21:15:58,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.01 09:15:57" (1/3) ... [2019-01-01 21:15:58,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e4106b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.01 09:15:58, skipping insertion in model container [2019-01-01 21:15:58,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:15:57" (2/3) ... [2019-01-01 21:15:58,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e4106b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.01 09:15:58, skipping insertion in model container [2019-01-01 21:15:58,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:15:58" (3/3) ... [2019-01-01 21:15:58,317 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2_true-unreach-call_true-no-overflow.i [2019-01-01 21:15:58,327 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-01 21:15:58,335 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-01-01 21:15:58,354 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-01-01 21:15:58,388 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-01 21:15:58,389 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-01 21:15:58,389 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-01 21:15:58,389 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-01 21:15:58,389 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-01 21:15:58,389 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-01 21:15:58,390 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-01 21:15:58,390 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-01 21:15:58,391 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-01 21:15:58,408 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-01-01 21:15:58,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-01 21:15:58,415 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 21:15:58,416 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-01 21:15:58,419 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-01 21:15:58,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:15:58,426 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-01-01 21:15:58,429 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:15:58,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:15:58,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:15:58,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:15:58,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:15:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:15:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:15:58,560 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-01 21:15:58,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.01 09:15:58 BoogieIcfgContainer [2019-01-01 21:15:58,580 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-01 21:15:58,581 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-01 21:15:58,581 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-01 21:15:58,581 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-01 21:15:58,582 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:15:58" (3/4) ... [2019-01-01 21:15:58,587 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-01 21:15:58,587 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-01 21:15:58,588 INFO L168 Benchmark]: Toolchain (without parser) took 1192.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -149.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:15:58,591 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. [2019-01-01 21:15:58,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.30 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 940.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-01-01 21:15:58,593 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.25 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. [2019-01-01 21:15:58,594 INFO L168 Benchmark]: Boogie Preprocessor took 39.78 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-01-01 21:15:58,595 INFO L168 Benchmark]: RCFGBuilder took 505.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -180.0 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2019-01-01 21:15:58,597 INFO L168 Benchmark]: TraceAbstraction took 271.45 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2019-01-01 21:15:58,598 INFO L168 Benchmark]: Witness Printer took 6.59 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. [2019-01-01 21:15:58,604 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 319.30 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 940.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.25 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 39.78 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 505.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -180.0 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 271.45 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * Witness Printer took 6.59 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: - UnprovableResult [Line: 21]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of shiftLeft at line 21. Possible FailurePath: [L14] unsigned char x = __VERIFIER_nondet_uchar(); [L15] unsigned char y; [L16] unsigned char c; [L18] y = 0 [L19] c = 0 [L20] COND TRUE c < (unsigned char)8 [L21] ((unsigned char)1) << c - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 6 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=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...