./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/list-ext-properties/simple-ext_false-unreach-call_false-valid-memcleanup_true-termination.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/list-ext-properties/simple-ext_false-unreach-call_false-valid-memcleanup_true-termination.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 9becd42a466bdbd2531661a22b57e70854c9d9ea ........................................................................................................................................................................................................................................................................ 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 16:11:19,705 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 16:11:19,707 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 16:11:19,722 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 16:11:19,722 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 16:11:19,723 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 16:11:19,724 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 16:11:19,727 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 16:11:19,728 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 16:11:19,729 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 16:11:19,730 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 16:11:19,731 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 16:11:19,732 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 16:11:19,733 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 16:11:19,734 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 16:11:19,735 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 16:11:19,736 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 16:11:19,738 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 16:11:19,740 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 16:11:19,742 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 16:11:19,743 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 16:11:19,745 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 16:11:19,747 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 16:11:19,747 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 16:11:19,748 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 16:11:19,748 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 16:11:19,750 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 16:11:19,751 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 16:11:19,752 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 16:11:19,753 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 16:11:19,753 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 16:11:19,754 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 16:11:19,754 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 16:11:19,755 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 16:11:19,756 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 16:11:19,756 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 16:11:19,757 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-14 16:11:19,773 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 16:11:19,773 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 16:11:19,774 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 16:11:19,775 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 16:11:19,775 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 16:11:19,775 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 16:11:19,776 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 16:11:19,776 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 16:11:19,776 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 16:11:19,776 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 16:11:19,776 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 16:11:19,777 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 16:11:19,777 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 16:11:19,777 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 16:11:19,777 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 16:11:19,777 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 16:11:19,778 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 16:11:19,779 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 16:11:19,779 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 16:11:19,780 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 16:11:19,780 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 16:11:19,780 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 16:11:19,781 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 16:11:19,781 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 16:11:19,781 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 16:11:19,781 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 16:11:19,781 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 16:11:19,781 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 -> 9becd42a466bdbd2531661a22b57e70854c9d9ea [2019-01-14 16:11:19,820 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 16:11:19,832 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 16:11:19,836 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 16:11:19,838 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 16:11:19,838 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 16:11:19,839 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/list-ext-properties/simple-ext_false-unreach-call_false-valid-memcleanup_true-termination.i [2019-01-14 16:11:19,897 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/891f87e55/bbcf1cbbc22f44799001f9f37e8d94a6/FLAGa07ef7264 [2019-01-14 16:11:20,492 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 16:11:20,493 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/list-ext-properties/simple-ext_false-unreach-call_false-valid-memcleanup_true-termination.i [2019-01-14 16:11:20,514 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/891f87e55/bbcf1cbbc22f44799001f9f37e8d94a6/FLAGa07ef7264 [2019-01-14 16:11:20,697 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/891f87e55/bbcf1cbbc22f44799001f9f37e8d94a6 [2019-01-14 16:11:20,703 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 16:11:20,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 16:11:20,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 16:11:20,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 16:11:20,714 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 16:11:20,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 04:11:20" (1/1) ... [2019-01-14 16:11:20,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c9046da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:11:20, skipping insertion in model container [2019-01-14 16:11:20,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 04:11:20" (1/1) ... [2019-01-14 16:11:20,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 16:11:20,778 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 16:11:21,182 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 16:11:21,198 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 16:11:21,322 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 16:11:21,380 INFO L195 MainTranslator]: Completed translation [2019-01-14 16:11:21,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:11:21 WrapperNode [2019-01-14 16:11:21,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 16:11:21,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 16:11:21,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 16:11:21,381 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 16:11:21,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:11:21" (1/1) ... [2019-01-14 16:11:21,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:11:21" (1/1) ... [2019-01-14 16:11:21,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 16:11:21,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 16:11:21,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 16:11:21,442 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 16:11:21,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:11:21" (1/1) ... [2019-01-14 16:11:21,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:11:21" (1/1) ... [2019-01-14 16:11:21,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:11:21" (1/1) ... [2019-01-14 16:11:21,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:11:21" (1/1) ... [2019-01-14 16:11:21,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:11:21" (1/1) ... [2019-01-14 16:11:21,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:11:21" (1/1) ... [2019-01-14 16:11:21,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:11:21" (1/1) ... [2019-01-14 16:11:21,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 16:11:21,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 16:11:21,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 16:11:21,491 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 16:11:21,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:11:21" (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 16:11:21,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-14 16:11:21,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-14 16:11:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-01-14 16:11:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-01-14 16:11:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-01-14 16:11:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-14 16:11:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 16:11:21,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 16:11:22,035 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 16:11:22,036 INFO L286 CfgBuilder]: Removed 11 assue(true) statements. [2019-01-14 16:11:22,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 04:11:22 BoogieIcfgContainer [2019-01-14 16:11:22,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 16:11:22,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 16:11:22,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 16:11:22,041 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 16:11:22,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 04:11:20" (1/3) ... [2019-01-14 16:11:22,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf87d09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 04:11:22, skipping insertion in model container [2019-01-14 16:11:22,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:11:21" (2/3) ... [2019-01-14 16:11:22,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf87d09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 04:11:22, skipping insertion in model container [2019-01-14 16:11:22,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 04:11:22" (3/3) ... [2019-01-14 16:11:22,046 INFO L112 eAbstractionObserver]: Analyzing ICFG simple-ext_false-unreach-call_false-valid-memcleanup_true-termination.i [2019-01-14 16:11:22,057 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 16:11:22,067 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-14 16:11:22,087 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-14 16:11:22,123 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 16:11:22,123 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 16:11:22,124 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 16:11:22,124 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 16:11:22,125 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 16:11:22,125 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 16:11:22,125 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 16:11:22,125 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 16:11:22,125 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 16:11:22,145 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-01-14 16:11:22,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-01-14 16:11:22,155 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 16:11:22,156 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 16:11:22,159 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 16:11:22,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 16:11:22,169 INFO L82 PathProgramCache]: Analyzing trace with hash 2119919114, now seen corresponding path program 1 times [2019-01-14 16:11:22,172 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 16:11:22,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 16:11:22,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 16:11:22,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 16:11:22,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 16:11:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 16:11:22,338 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 16:11:22,342 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 16:11:22,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 16:11:22,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-14 16:11:22,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-14 16:11:22,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-14 16:11:22,367 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-01-14 16:11:22,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 16:11:22,389 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2019-01-14 16:11:22,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-14 16:11:22,390 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-01-14 16:11:22,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 16:11:22,406 INFO L225 Difference]: With dead ends: 35 [2019-01-14 16:11:22,406 INFO L226 Difference]: Without dead ends: 15 [2019-01-14 16:11:22,410 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 16:11:22,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-01-14 16:11:22,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-01-14 16:11:22,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-01-14 16:11:22,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-01-14 16:11:22,447 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2019-01-14 16:11:22,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 16:11:22,448 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-01-14 16:11:22,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-14 16:11:22,448 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-01-14 16:11:22,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-14 16:11:22,449 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 16:11:22,449 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 16:11:22,449 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 16:11:22,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 16:11:22,449 INFO L82 PathProgramCache]: Analyzing trace with hash -624122565, now seen corresponding path program 1 times [2019-01-14 16:11:22,451 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 16:11:22,451 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 16:11:22,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 16:11:22,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 16:11:22,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 16:11:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 16:11:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 16:11:22,548 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 16:11:22,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 04:11:22 BoogieIcfgContainer [2019-01-14 16:11:22,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 16:11:22,576 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 16:11:22,576 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 16:11:22,576 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 16:11:22,577 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 04:11:22" (3/4) ... [2019-01-14 16:11:22,580 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-14 16:11:22,637 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 16:11:22,637 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 16:11:22,638 INFO L168 Benchmark]: Toolchain (without parser) took 1934.80 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 952.7 MB in the beginning and 1.0 GB in the end (delta: -80.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-01-14 16:11:22,641 INFO L168 Benchmark]: CDTParser took 0.20 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 16:11:22,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 672.62 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -132.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. [2019-01-14 16:11:22,642 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.40 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 16:11:22,643 INFO L168 Benchmark]: Boogie Preprocessor took 45.53 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 16:11:22,643 INFO L168 Benchmark]: RCFGBuilder took 546.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. [2019-01-14 16:11:22,645 INFO L168 Benchmark]: TraceAbstraction took 537.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-01-14 16:11:22,645 INFO L168 Benchmark]: Witness Printer took 61.21 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 16:11:22,650 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 672.62 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -132.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 60.40 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.53 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 546.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 537.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Witness Printer took 61.21 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 647]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L628] List a = (List) malloc(sizeof(struct node)); [L629] COND FALSE !(a == 0) [L630] List t; [L631] List p = a; [L632] int i = 0; [L633] i < 30 && __VERIFIER_nondet_int() [L633] i < 30 && __VERIFIER_nondet_int() [L633] COND FALSE !(i < 30 && __VERIFIER_nondet_int()) [L641] p->h = i [L642] p->n = 0 [L643] p = a [L644] i = 0 [L645] COND TRUE p!=0 [L646] EXPR p->h [L646] COND TRUE p->h != 1 [L647] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 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=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 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...