./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/forester-heap/dll-optional_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/forester-heap/dll-optional_false-unreach-call_false-valid-memcleanup.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 8409443a6b8db5c0500e3e8aa54c33463c524ec9 .......................................................................................................................................................................................................................................................................... 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 0.1.24-0ed9222-m [2019-01-14 15:51:48,525 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 15:51:48,527 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 15:51:48,542 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 15:51:48,542 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 15:51:48,543 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 15:51:48,544 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 15:51:48,546 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 15:51:48,548 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 15:51:48,549 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 15:51:48,550 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 15:51:48,550 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 15:51:48,551 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 15:51:48,552 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 15:51:48,553 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 15:51:48,554 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 15:51:48,555 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 15:51:48,556 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 15:51:48,559 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 15:51:48,560 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 15:51:48,561 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 15:51:48,562 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 15:51:48,565 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 15:51:48,565 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 15:51:48,565 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 15:51:48,566 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 15:51:48,568 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 15:51:48,568 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 15:51:48,569 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 15:51:48,570 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 15:51:48,571 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 15:51:48,572 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 15:51:48,572 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 15:51:48,572 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 15:51:48,573 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 15:51:48,574 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 15:51:48,574 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-14 15:51:48,592 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 15:51:48,593 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 15:51:48,595 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 15:51:48,595 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 15:51:48,595 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 15:51:48,595 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 15:51:48,595 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 15:51:48,596 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 15:51:48,596 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 15:51:48,596 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 15:51:48,596 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 15:51:48,597 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 15:51:48,597 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 15:51:48,597 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 15:51:48,597 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 15:51:48,597 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 15:51:48,598 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 15:51:48,598 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 15:51:48,598 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 15:51:48,598 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 15:51:48,598 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 15:51:48,598 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 15:51:48,599 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 15:51:48,600 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 15:51:48,600 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 15:51:48,600 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 15:51:48,601 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 15:51:48,601 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 -> 8409443a6b8db5c0500e3e8aa54c33463c524ec9 [2019-01-14 15:51:48,669 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 15:51:48,686 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 15:51:48,693 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 15:51:48,694 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 15:51:48,694 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 15:51:48,696 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/forester-heap/dll-optional_false-unreach-call_false-valid-memcleanup.i [2019-01-14 15:51:48,755 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7ffd9546/c02726e021b5499a820d7273b790a953/FLAG8b3b4a5da [2019-01-14 15:51:49,247 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 15:51:49,248 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/forester-heap/dll-optional_false-unreach-call_false-valid-memcleanup.i [2019-01-14 15:51:49,270 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7ffd9546/c02726e021b5499a820d7273b790a953/FLAG8b3b4a5da [2019-01-14 15:51:49,537 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7ffd9546/c02726e021b5499a820d7273b790a953 [2019-01-14 15:51:49,541 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 15:51:49,542 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 15:51:49,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 15:51:49,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 15:51:49,548 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 15:51:49,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 03:51:49" (1/1) ... [2019-01-14 15:51:49,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b2f0a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:51:49, skipping insertion in model container [2019-01-14 15:51:49,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 03:51:49" (1/1) ... [2019-01-14 15:51:49,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 15:51:49,614 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 15:51:50,001 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 15:51:50,013 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 15:51:50,138 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 15:51:50,205 INFO L195 MainTranslator]: Completed translation [2019-01-14 15:51:50,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:51:50 WrapperNode [2019-01-14 15:51:50,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 15:51:50,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 15:51:50,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 15:51:50,207 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 15:51:50,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:51:50" (1/1) ... [2019-01-14 15:51:50,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:51:50" (1/1) ... [2019-01-14 15:51:50,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 15:51:50,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 15:51:50,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 15:51:50,268 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 15:51:50,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:51:50" (1/1) ... [2019-01-14 15:51:50,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:51:50" (1/1) ... [2019-01-14 15:51:50,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:51:50" (1/1) ... [2019-01-14 15:51:50,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:51:50" (1/1) ... [2019-01-14 15:51:50,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:51:50" (1/1) ... [2019-01-14 15:51:50,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:51:50" (1/1) ... [2019-01-14 15:51:50,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:51:50" (1/1) ... [2019-01-14 15:51:50,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 15:51:50,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 15:51:50,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 15:51:50,308 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 15:51:50,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:51:50" (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 15:51:50,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-14 15:51:50,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-14 15:51:50,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-01-14 15:51:50,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-01-14 15:51:50,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-01-14 15:51:50,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-14 15:51:50,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 15:51:50,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 15:51:51,094 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 15:51:51,095 INFO L286 CfgBuilder]: Removed 9 assue(true) statements. [2019-01-14 15:51:51,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:51:51 BoogieIcfgContainer [2019-01-14 15:51:51,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 15:51:51,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 15:51:51,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 15:51:51,101 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 15:51:51,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 03:51:49" (1/3) ... [2019-01-14 15:51:51,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2278334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 03:51:51, skipping insertion in model container [2019-01-14 15:51:51,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:51:50" (2/3) ... [2019-01-14 15:51:51,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2278334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 03:51:51, skipping insertion in model container [2019-01-14 15:51:51,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:51:51" (3/3) ... [2019-01-14 15:51:51,104 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-optional_false-unreach-call_false-valid-memcleanup.i [2019-01-14 15:51:51,114 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 15:51:51,123 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-14 15:51:51,140 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-14 15:51:51,170 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 15:51:51,171 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 15:51:51,171 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 15:51:51,171 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 15:51:51,171 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 15:51:51,172 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 15:51:51,172 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 15:51:51,172 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 15:51:51,172 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 15:51:51,189 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-01-14 15:51:51,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-14 15:51:51,197 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 15:51:51,198 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 15:51:51,200 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 15:51:51,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 15:51:51,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1853593862, now seen corresponding path program 1 times [2019-01-14 15:51:51,208 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 15:51:51,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 15:51:51,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:51:51,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 15:51:51,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:51:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 15:51:51,368 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 15:51:51,371 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 15:51:51,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 15:51:51,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-14 15:51:51,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-14 15:51:51,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-14 15:51:51,387 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-01-14 15:51:51,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 15:51:51,406 INFO L93 Difference]: Finished difference Result 43 states and 65 transitions. [2019-01-14 15:51:51,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-14 15:51:51,408 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-01-14 15:51:51,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 15:51:51,419 INFO L225 Difference]: With dead ends: 43 [2019-01-14 15:51:51,419 INFO L226 Difference]: Without dead ends: 18 [2019-01-14 15:51:51,423 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-14 15:51:51,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-01-14 15:51:51,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-01-14 15:51:51,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-01-14 15:51:51,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2019-01-14 15:51:51,459 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 11 [2019-01-14 15:51:51,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 15:51:51,459 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2019-01-14 15:51:51,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-14 15:51:51,460 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2019-01-14 15:51:51,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-01-14 15:51:51,460 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 15:51:51,461 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 15:51:51,461 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 15:51:51,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 15:51:51,461 INFO L82 PathProgramCache]: Analyzing trace with hash -2143092324, now seen corresponding path program 1 times [2019-01-14 15:51:51,462 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 15:51:51,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 15:51:51,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:51:51,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 15:51:51,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:51:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 15:51:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 15:51:51,621 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 15:51:51,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 03:51:51 BoogieIcfgContainer [2019-01-14 15:51:51,661 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 15:51:51,662 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 15:51:51,662 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 15:51:51,662 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 15:51:51,663 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:51:51" (3/4) ... [2019-01-14 15:51:51,666 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-14 15:51:51,736 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 15:51:51,737 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 15:51:51,738 INFO L168 Benchmark]: Toolchain (without parser) took 2196.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -104.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. [2019-01-14 15:51:51,740 INFO L168 Benchmark]: CDTParser took 0.18 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 15:51:51,741 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -163.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2019-01-14 15:51:51,743 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.85 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 15:51:51,744 INFO L168 Benchmark]: Boogie Preprocessor took 39.88 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-01-14 15:51:51,744 INFO L168 Benchmark]: RCFGBuilder took 788.49 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: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. [2019-01-14 15:51:51,746 INFO L168 Benchmark]: TraceAbstraction took 564.23 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: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2019-01-14 15:51:51,747 INFO L168 Benchmark]: Witness Printer took 74.95 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 15:51:51,754 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 662.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -163.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 60.85 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. * Boogie Preprocessor took 39.88 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 788.49 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: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 564.23 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: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * Witness Printer took 74.95 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: 998]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); [L987] head->next = ((void*)0) [L988] head->prev = ((void*)0) [L989] COND TRUE __VERIFIER_nondet_int() [L989] head->data = 2 [L989] head->opt = malloc(sizeof(SLL)) [L989] EXPR head->opt [L989] head->opt->next = ((void*)0) [L990] SLL* x = head; [L992] COND FALSE !(__VERIFIER_nondet_int()) [L995] x = head [L996] COND TRUE x != ((void*)0) [L998] EXPR x->data [L998] EXPR x->data == 2 && x->opt == x [L998] EXPR x->opt [L998] EXPR x->data == 2 && x->opt == x [L998] COND TRUE !(x->data == 2 && x->opt == x) [L998] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 34 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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...