./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/list-ext2-properties/simple_and_skiplist_2lvl_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2e94e6aa Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/list-ext2-properties/simple_and_skiplist_2lvl_false-unreach-call.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6a10fd260c2f708e346588150444ddfe9656de05 ..................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2018-12-31 04:50:31,085 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 04:50:31,086 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 04:50:31,099 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 04:50:31,099 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 04:50:31,101 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 04:50:31,102 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 04:50:31,104 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 04:50:31,107 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 04:50:31,109 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 04:50:31,112 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 04:50:31,113 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 04:50:31,114 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 04:50:31,117 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 04:50:31,122 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 04:50:31,126 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 04:50:31,127 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 04:50:31,129 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 04:50:31,137 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 04:50:31,140 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 04:50:31,141 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 04:50:31,145 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 04:50:31,151 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 04:50:31,153 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 04:50:31,153 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 04:50:31,154 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 04:50:31,158 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 04:50:31,159 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 04:50:31,162 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 04:50:31,163 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 04:50:31,165 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 04:50:31,166 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 04:50:31,168 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 04:50:31,168 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 04:50:31,169 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 04:50:31,170 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 04:50:31,170 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 04:50:31,198 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 04:50:31,199 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 04:50:31,200 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 04:50:31,201 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 04:50:31,201 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 04:50:31,201 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 04:50:31,201 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 04:50:31,203 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 04:50:31,203 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 04:50:31,203 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 04:50:31,203 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 04:50:31,203 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 04:50:31,204 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 04:50:31,204 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 04:50:31,204 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 04:50:31,205 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 04:50:31,205 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 04:50:31,205 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 04:50:31,207 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 04:50:31,208 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 04:50:31,208 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 04:50:31,208 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 04:50:31,208 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 04:50:31,208 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 04:50:31,208 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 04:50:31,210 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 04:50:31,210 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 04:50:31,210 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 04:50:31,211 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 -> 6a10fd260c2f708e346588150444ddfe9656de05 [2018-12-31 04:50:31,272 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 04:50:31,289 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 04:50:31,293 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 04:50:31,295 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 04:50:31,295 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 04:50:31,296 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/list-ext2-properties/simple_and_skiplist_2lvl_false-unreach-call.i [2018-12-31 04:50:31,352 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7bb87729/f4a119d8c7f04d30a0f319ab76f86039/FLAG462a86b6d [2018-12-31 04:50:31,863 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 04:50:31,863 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/list-ext2-properties/simple_and_skiplist_2lvl_false-unreach-call.i [2018-12-31 04:50:31,885 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7bb87729/f4a119d8c7f04d30a0f319ab76f86039/FLAG462a86b6d [2018-12-31 04:50:32,125 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7bb87729/f4a119d8c7f04d30a0f319ab76f86039 [2018-12-31 04:50:32,131 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 04:50:32,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 04:50:32,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 04:50:32,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 04:50:32,139 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 04:50:32,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 04:50:32" (1/1) ... [2018-12-31 04:50:32,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b2ebe5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:50:32, skipping insertion in model container [2018-12-31 04:50:32,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 04:50:32" (1/1) ... [2018-12-31 04:50:32,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 04:50:32,217 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 04:50:32,675 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 04:50:32,698 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 04:50:32,875 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 04:50:32,939 INFO L195 MainTranslator]: Completed translation [2018-12-31 04:50:32,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:50:32 WrapperNode [2018-12-31 04:50:32,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 04:50:32,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 04:50:32,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 04:50:32,941 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 04:50:32,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:50:32" (1/1) ... [2018-12-31 04:50:32,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:50:32" (1/1) ... [2018-12-31 04:50:33,011 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 04:50:33,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 04:50:33,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 04:50:33,012 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 04:50:33,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:50:32" (1/1) ... [2018-12-31 04:50:33,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:50:32" (1/1) ... [2018-12-31 04:50:33,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:50:32" (1/1) ... [2018-12-31 04:50:33,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:50:32" (1/1) ... [2018-12-31 04:50:33,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:50:32" (1/1) ... [2018-12-31 04:50:33,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:50:32" (1/1) ... [2018-12-31 04:50:33,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:50:32" (1/1) ... [2018-12-31 04:50:33,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 04:50:33,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 04:50:33,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 04:50:33,053 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 04:50:33,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:50:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 04:50:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-31 04:50:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-31 04:50:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2018-12-31 04:50:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-31 04:50:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-31 04:50:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-31 04:50:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 04:50:33,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 04:50:33,895 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 04:50:33,895 INFO L280 CfgBuilder]: Removed 20 assue(true) statements. [2018-12-31 04:50:33,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:50:33 BoogieIcfgContainer [2018-12-31 04:50:33,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 04:50:33,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 04:50:33,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 04:50:33,899 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 04:50:33,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 04:50:32" (1/3) ... [2018-12-31 04:50:33,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14141257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 04:50:33, skipping insertion in model container [2018-12-31 04:50:33,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:50:32" (2/3) ... [2018-12-31 04:50:33,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14141257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 04:50:33, skipping insertion in model container [2018-12-31 04:50:33,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:50:33" (3/3) ... [2018-12-31 04:50:33,907 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_and_skiplist_2lvl_false-unreach-call.i [2018-12-31 04:50:33,917 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 04:50:33,926 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 04:50:33,945 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 04:50:33,974 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 04:50:33,975 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 04:50:33,975 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 04:50:33,976 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 04:50:33,976 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 04:50:33,976 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 04:50:33,976 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 04:50:33,976 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 04:50:33,976 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 04:50:33,991 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-12-31 04:50:33,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-31 04:50:33,998 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:50:33,999 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:50:34,002 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:50:34,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:50:34,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1262732570, now seen corresponding path program 1 times [2018-12-31 04:50:34,011 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:50:34,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:50:34,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:50:34,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:50:34,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:50:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:50:34,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:50:34,164 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:50:34,168 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-31 04:50:34,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-31 04:50:34,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-31 04:50:34,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-31 04:50:34,189 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2018-12-31 04:50:34,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:50:34,208 INFO L93 Difference]: Finished difference Result 64 states and 94 transitions. [2018-12-31 04:50:34,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-31 04:50:34,209 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-12-31 04:50:34,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:50:34,219 INFO L225 Difference]: With dead ends: 64 [2018-12-31 04:50:34,219 INFO L226 Difference]: Without dead ends: 14 [2018-12-31 04:50:34,223 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 [2018-12-31 04:50:34,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-12-31 04:50:34,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-12-31 04:50:34,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-31 04:50:34,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-12-31 04:50:34,254 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2018-12-31 04:50:34,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:50:34,254 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-12-31 04:50:34,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-31 04:50:34,255 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-12-31 04:50:34,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-31 04:50:34,255 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:50:34,255 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:50:34,256 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:50:34,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:50:34,257 INFO L82 PathProgramCache]: Analyzing trace with hash -962194253, now seen corresponding path program 1 times [2018-12-31 04:50:34,257 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:50:34,257 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:50:34,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:50:34,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:50:34,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:50:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:50:34,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:50:34,547 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:50:34,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-31 04:50:34,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-31 04:50:34,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-31 04:50:34,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-31 04:50:34,551 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 5 states. [2018-12-31 04:50:34,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:50:34,772 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2018-12-31 04:50:34,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-31 04:50:34,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-12-31 04:50:34,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:50:34,774 INFO L225 Difference]: With dead ends: 29 [2018-12-31 04:50:34,774 INFO L226 Difference]: Without dead ends: 27 [2018-12-31 04:50:34,775 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-31 04:50:34,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-31 04:50:34,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2018-12-31 04:50:34,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-12-31 04:50:34,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-12-31 04:50:34,781 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 10 [2018-12-31 04:50:34,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:50:34,782 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-12-31 04:50:34,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-31 04:50:34,782 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-12-31 04:50:34,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-31 04:50:34,784 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:50:34,784 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:50:34,784 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:50:34,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:50:34,785 INFO L82 PathProgramCache]: Analyzing trace with hash -112448262, now seen corresponding path program 1 times [2018-12-31 04:50:34,785 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:50:34,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:50:34,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:50:34,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:50:34,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:50:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:50:35,142 WARN L181 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 16 [2018-12-31 04:50:35,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:50:35,226 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 04:50:35,228 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 04:50:35,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:50:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:50:35,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 04:50:35,393 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-12-31 04:50:35,400 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-31 04:50:35,401 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-31 04:50:35,406 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-31 04:50:35,422 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-12-31 04:50:35,426 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-31 04:50:35,427 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-31 04:50:35,432 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-31 04:50:35,500 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-31 04:50:35,500 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2018-12-31 04:50:35,556 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-12-31 04:50:35,571 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-12-31 04:50:35,571 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-31 04:50:35,596 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-31 04:50:35,616 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-12-31 04:50:35,620 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-12-31 04:50:35,621 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-31 04:50:35,626 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-31 04:50:35,632 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-31 04:50:35,633 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2018-12-31 04:50:35,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:50:35,665 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 04:50:35,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-12-31 04:50:35,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-31 04:50:35,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-31 04:50:35,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-31 04:50:35,667 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 6 states. [2018-12-31 04:50:35,978 WARN L181 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2018-12-31 04:50:36,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:50:36,234 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2018-12-31 04:50:36,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-31 04:50:36,235 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-12-31 04:50:36,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:50:36,235 INFO L225 Difference]: With dead ends: 33 [2018-12-31 04:50:36,236 INFO L226 Difference]: Without dead ends: 23 [2018-12-31 04:50:36,237 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-31 04:50:36,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-12-31 04:50:36,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 16. [2018-12-31 04:50:36,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-31 04:50:36,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2018-12-31 04:50:36,242 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2018-12-31 04:50:36,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:50:36,242 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2018-12-31 04:50:36,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-31 04:50:36,242 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2018-12-31 04:50:36,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-31 04:50:36,243 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:50:36,243 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:50:36,243 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:50:36,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:50:36,244 INFO L82 PathProgramCache]: Analyzing trace with hash -64134854, now seen corresponding path program 1 times [2018-12-31 04:50:36,244 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:50:36,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:50:36,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:50:36,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:50:36,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:50:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 04:50:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 04:50:36,326 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-31 04:50:36,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 04:50:36 BoogieIcfgContainer [2018-12-31 04:50:36,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 04:50:36,357 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 04:50:36,357 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 04:50:36,357 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 04:50:36,358 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:50:33" (3/4) ... [2018-12-31 04:50:36,360 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-31 04:50:36,414 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 04:50:36,414 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 04:50:36,415 INFO L168 Benchmark]: Toolchain (without parser) took 4283.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 940.6 MB in the beginning and 990.0 MB in the end (delta: -49.4 MB). Peak memory consumption was 90.1 MB. Max. memory is 11.5 GB. [2018-12-31 04:50:36,416 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 04:50:36,417 INFO L168 Benchmark]: CACSL2BoogieTranslator took 806.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -177.6 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2018-12-31 04:50:36,419 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 04:50:36,419 INFO L168 Benchmark]: Boogie Preprocessor took 41.19 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-12-31 04:50:36,420 INFO L168 Benchmark]: RCFGBuilder took 842.91 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: 32.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 11.5 GB. [2018-12-31 04:50:36,421 INFO L168 Benchmark]: TraceAbstraction took 2460.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 990.0 MB in the end (delta: 89.0 MB). Peak memory consumption was 89.0 MB. Max. memory is 11.5 GB. [2018-12-31 04:50:36,422 INFO L168 Benchmark]: Witness Printer took 57.03 ms. Allocated memory is still 1.2 GB. Free memory is still 990.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 04:50:36,430 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 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 806.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -177.6 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 70.68 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 41.19 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 842.91 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: 32.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2460.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 990.0 MB in the end (delta: 89.0 MB). Peak memory consumption was 89.0 MB. Max. memory is 11.5 GB. * Witness Printer took 57.03 ms. Allocated memory is still 1.2 GB. Free memory is still 990.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 602]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L585] List a = (List) malloc(sizeof(struct node)); [L586] COND FALSE !(a == 0) [L587] List t; [L588] List p = a; [L589] a->h = 2 [L590] COND TRUE __VERIFIER_nondet_int() [L591] p->h = 1 [L592] t = (List) malloc(sizeof(struct node)) [L593] COND FALSE !(t == 0) [L594] p->n = t [L595] EXPR p->n [L595] p = p->n [L590] COND FALSE !(__VERIFIER_nondet_int()) [L597] p->h = 2 [L598] p->n = 0 [L599] p = a [L600] COND TRUE p!=0 [L601] EXPR p->h [L601] COND TRUE p->h != 2 [L602] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. UNSAFE Result, 2.3s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 66 SDtfs, 30 SDslu, 48 SDs, 0 SdLazy, 58 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 3 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 3067 SizeOfPredicates, 7 NumberOfNonLiveVariables, 54 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...