./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/forester-heap/sll-simple-white-blue_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/sll-simple-white-blue_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 adee0aad8018029b1a093d0ddfc0de44abfd0e03 ............................................................................................................................................................................................................................................................................ 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 15:52:13,010 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 15:52:13,012 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 15:52:13,029 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 15:52:13,030 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 15:52:13,031 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 15:52:13,033 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 15:52:13,035 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 15:52:13,038 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 15:52:13,039 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 15:52:13,039 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 15:52:13,040 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 15:52:13,042 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 15:52:13,043 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 15:52:13,044 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 15:52:13,052 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 15:52:13,053 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 15:52:13,055 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 15:52:13,057 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 15:52:13,058 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 15:52:13,060 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 15:52:13,061 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 15:52:13,063 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 15:52:13,063 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 15:52:13,063 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 15:52:13,064 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 15:52:13,065 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 15:52:13,066 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 15:52:13,066 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 15:52:13,067 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 15:52:13,068 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 15:52:13,068 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 15:52:13,069 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 15:52:13,069 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 15:52:13,070 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 15:52:13,070 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 15:52:13,070 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-14 15:52:13,099 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 15:52:13,101 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 15:52:13,102 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 15:52:13,104 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 15:52:13,104 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 15:52:13,104 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 15:52:13,104 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 15:52:13,104 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 15:52:13,105 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 15:52:13,105 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 15:52:13,105 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 15:52:13,105 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 15:52:13,105 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 15:52:13,105 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 15:52:13,106 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 15:52:13,106 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 15:52:13,106 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 15:52:13,106 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 15:52:13,106 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 15:52:13,106 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 15:52:13,111 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 15:52:13,111 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 15:52:13,111 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 15:52:13,111 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 15:52:13,111 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 15:52:13,112 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 15:52:13,112 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 15:52:13,112 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 -> adee0aad8018029b1a093d0ddfc0de44abfd0e03 [2019-01-14 15:52:13,156 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 15:52:13,174 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 15:52:13,178 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 15:52:13,180 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 15:52:13,180 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 15:52:13,181 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/forester-heap/sll-simple-white-blue_false-unreach-call_false-valid-memcleanup.i [2019-01-14 15:52:13,245 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/084ef2d92/e6f1f859b33640849dd487b81a4e4f1c/FLAG26ad6b3cd [2019-01-14 15:52:13,722 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 15:52:13,723 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/forester-heap/sll-simple-white-blue_false-unreach-call_false-valid-memcleanup.i [2019-01-14 15:52:13,736 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/084ef2d92/e6f1f859b33640849dd487b81a4e4f1c/FLAG26ad6b3cd [2019-01-14 15:52:14,032 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/084ef2d92/e6f1f859b33640849dd487b81a4e4f1c [2019-01-14 15:52:14,036 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 15:52:14,038 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 15:52:14,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 15:52:14,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 15:52:14,044 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 15:52:14,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 03:52:14" (1/1) ... [2019-01-14 15:52:14,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63fbcbc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:52:14, skipping insertion in model container [2019-01-14 15:52:14,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 03:52:14" (1/1) ... [2019-01-14 15:52:14,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 15:52:14,129 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 15:52:14,549 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 15:52:14,569 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 15:52:14,713 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 15:52:14,778 INFO L195 MainTranslator]: Completed translation [2019-01-14 15:52:14,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:52:14 WrapperNode [2019-01-14 15:52:14,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 15:52:14,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 15:52:14,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 15:52:14,780 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 15:52:14,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:52:14" (1/1) ... [2019-01-14 15:52:14,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:52:14" (1/1) ... [2019-01-14 15:52:14,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 15:52:14,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 15:52:14,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 15:52:14,840 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 15:52:14,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:52:14" (1/1) ... [2019-01-14 15:52:14,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:52:14" (1/1) ... [2019-01-14 15:52:14,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:52:14" (1/1) ... [2019-01-14 15:52:14,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:52:14" (1/1) ... [2019-01-14 15:52:14,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:52:14" (1/1) ... [2019-01-14 15:52:14,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:52:14" (1/1) ... [2019-01-14 15:52:14,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:52:14" (1/1) ... [2019-01-14 15:52:14,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 15:52:14,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 15:52:14,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 15:52:14,898 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 15:52:14,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:52:14" (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 15:52:14,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-14 15:52:14,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-14 15:52:14,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-01-14 15:52:14,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-01-14 15:52:14,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-01-14 15:52:14,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-14 15:52:14,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 15:52:14,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 15:52:15,519 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 15:52:15,519 INFO L286 CfgBuilder]: Removed 12 assue(true) statements. [2019-01-14 15:52:15,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:52:15 BoogieIcfgContainer [2019-01-14 15:52:15,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 15:52:15,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 15:52:15,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 15:52:15,524 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 15:52:15,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 03:52:14" (1/3) ... [2019-01-14 15:52:15,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233954f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 03:52:15, skipping insertion in model container [2019-01-14 15:52:15,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:52:14" (2/3) ... [2019-01-14 15:52:15,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233954f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 03:52:15, skipping insertion in model container [2019-01-14 15:52:15,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:52:15" (3/3) ... [2019-01-14 15:52:15,528 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-simple-white-blue_false-unreach-call_false-valid-memcleanup.i [2019-01-14 15:52:15,536 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 15:52:15,544 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-14 15:52:15,561 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-14 15:52:15,591 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 15:52:15,592 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 15:52:15,592 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 15:52:15,593 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 15:52:15,593 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 15:52:15,593 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 15:52:15,594 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 15:52:15,594 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 15:52:15,594 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 15:52:15,610 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-01-14 15:52:15,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-14 15:52:15,617 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 15:52:15,618 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 15:52:15,621 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 15:52:15,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 15:52:15,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1041580535, now seen corresponding path program 1 times [2019-01-14 15:52:15,627 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 15:52:15,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 15:52:15,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:52:15,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 15:52:15,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:52:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 15:52:15,762 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 15:52:15,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 15:52:15,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 15:52:15,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-14 15:52:15,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-14 15:52:15,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-14 15:52:15,780 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-01-14 15:52:15,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 15:52:15,795 INFO L93 Difference]: Finished difference Result 47 states and 74 transitions. [2019-01-14 15:52:15,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-14 15:52:15,796 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-01-14 15:52:15,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 15:52:15,807 INFO L225 Difference]: With dead ends: 47 [2019-01-14 15:52:15,807 INFO L226 Difference]: Without dead ends: 19 [2019-01-14 15:52:15,810 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 15:52:15,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-01-14 15:52:15,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-01-14 15:52:15,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-01-14 15:52:15,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2019-01-14 15:52:15,847 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 11 [2019-01-14 15:52:15,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 15:52:15,848 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2019-01-14 15:52:15,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-14 15:52:15,848 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2019-01-14 15:52:15,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-01-14 15:52:15,849 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 15:52:15,849 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 15:52:15,850 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 15:52:15,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 15:52:15,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1993200173, now seen corresponding path program 1 times [2019-01-14 15:52:15,850 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 15:52:15,850 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 15:52:15,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:52:15,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 15:52:15,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:52:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 15:52:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 15:52:15,950 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 15:52:15,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 03:52:15 BoogieIcfgContainer [2019-01-14 15:52:15,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 15:52:15,978 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 15:52:15,978 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 15:52:15,978 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 15:52:15,979 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:52:15" (3/4) ... [2019-01-14 15:52:15,982 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-14 15:52:16,054 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 15:52:16,054 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 15:52:16,055 INFO L168 Benchmark]: Toolchain (without parser) took 2018.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 946.0 MB in the beginning and 1.0 GB in the end (delta: -96.3 MB). Peak memory consumption was 30.0 MB. Max. memory is 11.5 GB. [2019-01-14 15:52:16,057 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 15:52:16,058 INFO L168 Benchmark]: CACSL2BoogieTranslator took 741.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -155.3 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2019-01-14 15:52:16,059 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.82 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 15:52:16,059 INFO L168 Benchmark]: Boogie Preprocessor took 57.46 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-01-14 15:52:16,062 INFO L168 Benchmark]: RCFGBuilder took 622.62 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: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. [2019-01-14 15:52:16,063 INFO L168 Benchmark]: TraceAbstraction took 456.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2019-01-14 15:52:16,064 INFO L168 Benchmark]: Witness Printer took 75.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-01-14 15:52:16,074 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 741.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -155.3 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.82 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 57.46 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 622.62 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: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 456.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * Witness Printer took 75.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1042]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L988] SLL* head = malloc(sizeof(SLL)); [L989] head->next = ((void*)0) [L990] head->data = 0 [L992] SLL* x = head; [L995] COND FALSE !(__VERIFIER_nondet_int()) [L1005] COND TRUE __VERIFIER_nondet_int() [L1006] x = malloc(sizeof(SLL)) [L1007] x->data = 1 [L1008] x->next = head [L1009] head = x [L1029] x = head [L1032] EXPR x->data [L1032] COND FALSE !(x->data != 1) [L1038] EXPR x->next [L1038] x = x->next [L1039] COND TRUE \read(*x) [L1041] EXPR x->data [L1041] COND TRUE x->data != 1 [L1042] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 31 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, 24 NumberOfCodeBlocks, 24 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...