./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/ldv-regression/recursive_list_true-termination.c_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/ldv-regression/recursive_list_true-termination.c_false-unreach-call.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3d5040117e2eabdebb8b19ac037d1eb680a830cf ...................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2018-12-31 04:22:31,248 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 04:22:31,250 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 04:22:31,267 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 04:22:31,269 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 04:22:31,271 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 04:22:31,273 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 04:22:31,277 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 04:22:31,279 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 04:22:31,281 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 04:22:31,284 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 04:22:31,285 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 04:22:31,286 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 04:22:31,289 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 04:22:31,296 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 04:22:31,300 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 04:22:31,301 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 04:22:31,306 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 04:22:31,311 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 04:22:31,312 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 04:22:31,316 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 04:22:31,319 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 04:22:31,326 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 04:22:31,326 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 04:22:31,327 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 04:22:31,327 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 04:22:31,328 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 04:22:31,332 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 04:22:31,333 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 04:22:31,336 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 04:22:31,337 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 04:22:31,338 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 04:22:31,338 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 04:22:31,338 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 04:22:31,342 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 04:22:31,344 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 04:22:31,347 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 04:22:31,365 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 04:22:31,365 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 04:22:31,366 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 04:22:31,366 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 04:22:31,367 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 04:22:31,367 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 04:22:31,367 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 04:22:31,367 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 04:22:31,367 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 04:22:31,368 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 04:22:31,368 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 04:22:31,368 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 04:22:31,368 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 04:22:31,368 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 04:22:31,368 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 04:22:31,369 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 04:22:31,369 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 04:22:31,369 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 04:22:31,369 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 04:22:31,369 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 04:22:31,369 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 04:22:31,370 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 04:22:31,370 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 04:22:31,370 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 04:22:31,370 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 04:22:31,370 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 04:22:31,370 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 04:22:31,371 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 04:22:31,371 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 ! call(__VERIFIER_error())) ) 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 -> 3d5040117e2eabdebb8b19ac037d1eb680a830cf [2018-12-31 04:22:31,405 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 04:22:31,419 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 04:22:31,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 04:22:31,427 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 04:22:31,428 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 04:22:31,429 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ldv-regression/recursive_list_true-termination.c_false-unreach-call.i [2018-12-31 04:22:31,502 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d91b59802/1239a305f48749968ab2c1efca55d34c/FLAG7ba4d453d [2018-12-31 04:22:32,025 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 04:22:32,026 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ldv-regression/recursive_list_true-termination.c_false-unreach-call.i [2018-12-31 04:22:32,032 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d91b59802/1239a305f48749968ab2c1efca55d34c/FLAG7ba4d453d [2018-12-31 04:22:32,377 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d91b59802/1239a305f48749968ab2c1efca55d34c [2018-12-31 04:22:32,381 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 04:22:32,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 04:22:32,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 04:22:32,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 04:22:32,388 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 04:22:32,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 04:22:32" (1/1) ... [2018-12-31 04:22:32,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54008995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:32, skipping insertion in model container [2018-12-31 04:22:32,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 04:22:32" (1/1) ... [2018-12-31 04:22:32,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 04:22:32,426 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 04:22:32,647 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 04:22:32,667 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 04:22:32,692 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 04:22:32,724 INFO L195 MainTranslator]: Completed translation [2018-12-31 04:22:32,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:32 WrapperNode [2018-12-31 04:22:32,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 04:22:32,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 04:22:32,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 04:22:32,726 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 04:22:32,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:32" (1/1) ... [2018-12-31 04:22:32,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:32" (1/1) ... [2018-12-31 04:22:32,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 04:22:32,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 04:22:32,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 04:22:32,787 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 04:22:32,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:32" (1/1) ... [2018-12-31 04:22:32,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:32" (1/1) ... [2018-12-31 04:22:32,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:32" (1/1) ... [2018-12-31 04:22:32,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:32" (1/1) ... [2018-12-31 04:22:32,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:32" (1/1) ... [2018-12-31 04:22:32,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:32" (1/1) ... [2018-12-31 04:22:32,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:32" (1/1) ... [2018-12-31 04:22:32,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 04:22:32,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 04:22:32,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 04:22:32,834 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 04:22:32,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:32" (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 [2018-12-31 04:22:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-31 04:22:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2018-12-31 04:22:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-31 04:22:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-31 04:22:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2018-12-31 04:22:33,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 04:22:33,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 04:22:33,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-31 04:22:33,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-31 04:22:33,407 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 04:22:33,407 INFO L280 CfgBuilder]: Removed 14 assue(true) statements. [2018-12-31 04:22:33,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:22:33 BoogieIcfgContainer [2018-12-31 04:22:33,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 04:22:33,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 04:22:33,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 04:22:33,414 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 04:22:33,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 04:22:32" (1/3) ... [2018-12-31 04:22:33,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fff8831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 04:22:33, skipping insertion in model container [2018-12-31 04:22:33,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:22:32" (2/3) ... [2018-12-31 04:22:33,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fff8831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 04:22:33, skipping insertion in model container [2018-12-31 04:22:33,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:22:33" (3/3) ... [2018-12-31 04:22:33,420 INFO L112 eAbstractionObserver]: Analyzing ICFG recursive_list_true-termination.c_false-unreach-call.i [2018-12-31 04:22:33,433 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 04:22:33,449 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 04:22:33,475 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 04:22:33,519 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 04:22:33,520 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 04:22:33,520 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 04:22:33,521 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 04:22:33,521 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 04:22:33,521 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 04:22:33,521 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 04:22:33,521 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 04:22:33,522 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 04:22:33,540 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-12-31 04:22:33,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-31 04:22:33,547 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:22:33,548 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:22:33,550 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:22:33,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:22:33,557 INFO L82 PathProgramCache]: Analyzing trace with hash 87858985, now seen corresponding path program 1 times [2018-12-31 04:22:33,559 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:22:33,560 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:22:33,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:22:33,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:22:33,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:22:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 04:22:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 04:22:33,811 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-31 04:22:33,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 04:22:33 BoogieIcfgContainer [2018-12-31 04:22:33,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 04:22:33,850 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 04:22:33,850 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 04:22:33,850 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 04:22:33,851 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:22:33" (3/4) ... [2018-12-31 04:22:33,853 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-31 04:22:33,919 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 04:22:33,920 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 04:22:33,921 INFO L168 Benchmark]: Toolchain (without parser) took 1539.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -157.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 04:22:33,923 INFO L168 Benchmark]: CDTParser took 0.15 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. [2018-12-31 04:22:33,923 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.96 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. [2018-12-31 04:22:33,925 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.29 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. [2018-12-31 04:22:33,925 INFO L168 Benchmark]: Boogie Preprocessor took 47.10 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-31 04:22:33,926 INFO L168 Benchmark]: RCFGBuilder took 574.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -193.5 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2018-12-31 04:22:33,927 INFO L168 Benchmark]: TraceAbstraction took 440.67 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: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2018-12-31 04:22:33,928 INFO L168 Benchmark]: Witness Printer took 69.74 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. [2018-12-31 04:22:33,933 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 341.96 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 56.29 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 47.10 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 574.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -193.5 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 440.67 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: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Witness Printer took 69.74 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: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int i = 1; VAL [i=1] [L37] struct list *l,m; [L38] l = &m [L39] l->next = 0 [L40] l->n = 0 [L25] struct list *new_el; [L20] return malloc(8U); VAL [i=1] [L27] new_el = allocate_memory() [L29] new_el->n = n [L30] new_el->next = l [L32] return new_el; VAL [i=1] [L42] l = append(l, 1) [L25] struct list *new_el; [L20] return malloc(8U); VAL [i=1] [L27] new_el = allocate_memory() [L29] new_el->n = n [L30] new_el->next = l [L32] return new_el; VAL [i=1] [L43] l = append(l, 2) [L48] EXPR l->next [L48] EXPR l->next->next [L48] EXPR l->next->next->n VAL [i=1] [L48] COND TRUE l->next->next->n == 0 [L8] __VERIFIER_error() VAL [i=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. UNSAFE Result, 0.3s 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=13occurred 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, 8 NumberOfCodeBlocks, 8 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...