./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/list-simple/dll2n_update_all_reverse_true-unreach-call_true-valid-memsafety.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-simple/dll2n_update_all_reverse_true-unreach-call_true-valid-memsafety.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 cfdde8b1798318c3bb26b76a748741913b280952 .................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-14 16:35:20,611 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 16:35:20,614 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 16:35:20,625 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 16:35:20,626 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 16:35:20,627 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 16:35:20,628 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 16:35:20,631 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 16:35:20,633 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 16:35:20,634 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 16:35:20,635 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 16:35:20,635 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 16:35:20,636 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 16:35:20,637 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 16:35:20,639 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 16:35:20,640 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 16:35:20,640 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 16:35:20,643 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 16:35:20,646 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 16:35:20,652 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 16:35:20,658 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 16:35:20,659 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 16:35:20,664 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 16:35:20,665 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 16:35:20,665 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 16:35:20,666 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 16:35:20,667 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 16:35:20,667 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 16:35:20,668 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 16:35:20,670 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 16:35:20,670 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 16:35:20,670 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 16:35:20,671 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 16:35:20,671 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 16:35:20,673 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 16:35:20,673 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 16:35:20,674 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-14 16:35:20,695 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 16:35:20,695 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 16:35:20,696 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 16:35:20,696 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 16:35:20,698 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 16:35:20,698 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 16:35:20,698 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 16:35:20,698 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 16:35:20,699 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 16:35:20,699 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 16:35:20,699 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 16:35:20,699 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 16:35:20,699 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 16:35:20,699 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 16:35:20,700 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 16:35:20,700 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 16:35:20,700 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 16:35:20,700 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 16:35:20,701 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 16:35:20,701 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 16:35:20,701 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 16:35:20,701 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 16:35:20,701 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 16:35:20,701 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 16:35:20,703 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 16:35:20,703 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 16:35:20,703 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 16:35:20,704 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 -> cfdde8b1798318c3bb26b76a748741913b280952 [2019-01-14 16:35:20,752 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 16:35:20,765 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 16:35:20,770 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 16:35:20,772 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 16:35:20,773 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 16:35:20,773 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/list-simple/dll2n_update_all_reverse_true-unreach-call_true-valid-memsafety.i [2019-01-14 16:35:20,835 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed207eaa9/035cb40ba1dc479c805aa25ccff42108/FLAGbd7df8941 [2019-01-14 16:35:21,332 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 16:35:21,333 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/list-simple/dll2n_update_all_reverse_true-unreach-call_true-valid-memsafety.i [2019-01-14 16:35:21,350 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed207eaa9/035cb40ba1dc479c805aa25ccff42108/FLAGbd7df8941 [2019-01-14 16:35:21,608 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed207eaa9/035cb40ba1dc479c805aa25ccff42108 [2019-01-14 16:35:21,611 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 16:35:21,612 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 16:35:21,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 16:35:21,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 16:35:21,621 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 16:35:21,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 04:35:21" (1/1) ... [2019-01-14 16:35:21,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ab6af36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:35:21, skipping insertion in model container [2019-01-14 16:35:21,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 04:35:21" (1/1) ... [2019-01-14 16:35:21,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 16:35:21,693 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 16:35:22,087 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 16:35:22,098 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 16:35:22,219 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 16:35:22,278 INFO L195 MainTranslator]: Completed translation [2019-01-14 16:35:22,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:35:22 WrapperNode [2019-01-14 16:35:22,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 16:35:22,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 16:35:22,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 16:35:22,280 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 16:35:22,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:35:22" (1/1) ... [2019-01-14 16:35:22,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:35:22" (1/1) ... [2019-01-14 16:35:22,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 16:35:22,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 16:35:22,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 16:35:22,347 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 16:35:22,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:35:22" (1/1) ... [2019-01-14 16:35:22,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:35:22" (1/1) ... [2019-01-14 16:35:22,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:35:22" (1/1) ... [2019-01-14 16:35:22,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:35:22" (1/1) ... [2019-01-14 16:35:22,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:35:22" (1/1) ... [2019-01-14 16:35:22,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:35:22" (1/1) ... [2019-01-14 16:35:22,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:35:22" (1/1) ... [2019-01-14 16:35:22,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 16:35:22,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 16:35:22,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 16:35:22,382 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 16:35:22,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:35:22" (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 16:35:22,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-14 16:35:22,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-14 16:35:22,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-01-14 16:35:22,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-01-14 16:35:22,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-01-14 16:35:22,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-14 16:35:22,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 16:35:22,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 16:35:22,959 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 16:35:22,960 INFO L286 CfgBuilder]: Removed 20 assue(true) statements. [2019-01-14 16:35:22,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 04:35:22 BoogieIcfgContainer [2019-01-14 16:35:22,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 16:35:22,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 16:35:22,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 16:35:22,965 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 16:35:22,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 04:35:21" (1/3) ... [2019-01-14 16:35:22,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5956ffe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 04:35:22, skipping insertion in model container [2019-01-14 16:35:22,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 04:35:22" (2/3) ... [2019-01-14 16:35:22,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5956ffe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 04:35:22, skipping insertion in model container [2019-01-14 16:35:22,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 04:35:22" (3/3) ... [2019-01-14 16:35:22,968 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_update_all_reverse_true-unreach-call_true-valid-memsafety.i [2019-01-14 16:35:22,977 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 16:35:22,984 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-14 16:35:23,000 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-14 16:35:23,024 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 16:35:23,025 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 16:35:23,025 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 16:35:23,025 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 16:35:23,026 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 16:35:23,026 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 16:35:23,026 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 16:35:23,026 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 16:35:23,026 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 16:35:23,040 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-01-14 16:35:23,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-01-14 16:35:23,047 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 16:35:23,048 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 16:35:23,051 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 16:35:23,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 16:35:23,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1608020802, now seen corresponding path program 1 times [2019-01-14 16:35:23,059 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 16:35:23,060 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 16:35:23,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 16:35:23,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 16:35:23,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 16:35:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 16:35:23,206 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 16:35:23,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 16:35:23,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 16:35:23,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 16:35:23,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 16:35:23,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 16:35:23,224 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2019-01-14 16:35:23,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 16:35:23,285 INFO L93 Difference]: Finished difference Result 56 states and 84 transitions. [2019-01-14 16:35:23,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 16:35:23,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-01-14 16:35:23,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 16:35:23,298 INFO L225 Difference]: With dead ends: 56 [2019-01-14 16:35:23,298 INFO L226 Difference]: Without dead ends: 27 [2019-01-14 16:35:23,301 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 16:35:23,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-01-14 16:35:23,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2019-01-14 16:35:23,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-01-14 16:35:23,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2019-01-14 16:35:23,337 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 13 [2019-01-14 16:35:23,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 16:35:23,338 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2019-01-14 16:35:23,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 16:35:23,338 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2019-01-14 16:35:23,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-01-14 16:35:23,339 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 16:35:23,339 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 16:35:23,339 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 16:35:23,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 16:35:23,339 INFO L82 PathProgramCache]: Analyzing trace with hash -780239213, now seen corresponding path program 1 times [2019-01-14 16:35:23,340 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 16:35:23,341 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 16:35:23,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 16:35:23,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 16:35:23,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 16:35:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 16:35:23,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 16:35:23,496 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 16:35:23,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 16:35:23,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 16:35:23,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 16:35:23,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 16:35:23,500 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand 3 states. [2019-01-14 16:35:23,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 16:35:23,586 INFO L93 Difference]: Finished difference Result 47 states and 58 transitions. [2019-01-14 16:35:23,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 16:35:23,587 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-01-14 16:35:23,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 16:35:23,588 INFO L225 Difference]: With dead ends: 47 [2019-01-14 16:35:23,589 INFO L226 Difference]: Without dead ends: 27 [2019-01-14 16:35:23,590 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 16:35:23,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-01-14 16:35:23,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2019-01-14 16:35:23,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-01-14 16:35:23,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2019-01-14 16:35:23,595 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 18 [2019-01-14 16:35:23,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 16:35:23,596 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2019-01-14 16:35:23,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 16:35:23,596 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2019-01-14 16:35:23,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-01-14 16:35:23,597 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 16:35:23,597 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 16:35:23,597 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 16:35:23,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 16:35:23,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1367045227, now seen corresponding path program 1 times [2019-01-14 16:35:23,598 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 16:35:23,598 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 16:35:23,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 16:35:23,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 16:35:23,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 16:35:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 16:35:23,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 16:35:23,682 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-14 16:35:23,683 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 [2019-01-14 16:35:23,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 16:35:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 16:35:23,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 16:35:23,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 16:35:23,887 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-14 16:35:23,887 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-01-14 16:35:23,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-14 16:35:23,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-14 16:35:23,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-01-14 16:35:23,889 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 5 states. [2019-01-14 16:35:23,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 16:35:23,946 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2019-01-14 16:35:23,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-14 16:35:23,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-01-14 16:35:23,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 16:35:23,948 INFO L225 Difference]: With dead ends: 43 [2019-01-14 16:35:23,948 INFO L226 Difference]: Without dead ends: 28 [2019-01-14 16:35:23,949 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-01-14 16:35:23,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-01-14 16:35:23,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-01-14 16:35:23,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-01-14 16:35:23,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-01-14 16:35:23,955 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2019-01-14 16:35:23,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 16:35:23,955 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-01-14 16:35:23,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-14 16:35:23,955 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-01-14 16:35:23,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-01-14 16:35:23,956 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 16:35:23,956 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 16:35:23,957 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 16:35:23,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 16:35:23,957 INFO L82 PathProgramCache]: Analyzing trace with hash 980561436, now seen corresponding path program 1 times [2019-01-14 16:35:23,957 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 16:35:23,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 16:35:23,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 16:35:23,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 16:35:23,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 16:35:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 16:35:24,132 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-01-14 16:35:24,133 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-14 16:35:24,133 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-14 16:35:24,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 16:35:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 16:35:24,203 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 16:35:24,208 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-01-14 16:35:24,227 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-01-14 16:35:24,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2019-01-14 16:35:24,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-14 16:35:24,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-14 16:35:24,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-01-14 16:35:24,229 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 5 states. [2019-01-14 16:35:24,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 16:35:24,333 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2019-01-14 16:35:24,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-14 16:35:24,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-01-14 16:35:24,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 16:35:24,335 INFO L225 Difference]: With dead ends: 34 [2019-01-14 16:35:24,335 INFO L226 Difference]: Without dead ends: 0 [2019-01-14 16:35:24,335 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-01-14 16:35:24,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-14 16:35:24,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-14 16:35:24,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-14 16:35:24,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-14 16:35:24,336 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-01-14 16:35:24,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 16:35:24,337 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 16:35:24,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-14 16:35:24,337 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-14 16:35:24,337 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-14 16:35:24,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-14 16:35:24,497 WARN L181 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 3 [2019-01-14 16:35:24,564 INFO L448 ceAbstractionStarter]: For program point L622-2(lines 622 627) no Hoare annotation was computed. [2019-01-14 16:35:24,564 INFO L444 ceAbstractionStarter]: At program point L622-3(lines 622 627) the Hoare annotation is: (and (<= 2 ULTIMATE.start_main_~len~0) (<= 1 ULTIMATE.start_main_~i~0)) [2019-01-14 16:35:24,564 INFO L448 ceAbstractionStarter]: For program point L622-4(lines 622 627) no Hoare annotation was computed. [2019-01-14 16:35:24,564 INFO L448 ceAbstractionStarter]: For program point L606(lines 1 632) no Hoare annotation was computed. [2019-01-14 16:35:24,564 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-01-14 16:35:24,565 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-01-14 16:35:24,565 INFO L451 ceAbstractionStarter]: At program point L631(lines 613 632) the Hoare annotation is: true [2019-01-14 16:35:24,565 INFO L444 ceAbstractionStarter]: At program point L590(lines 574 591) the Hoare annotation is: (<= 2 ULTIMATE.start_main_~len~0) [2019-01-14 16:35:24,565 INFO L444 ceAbstractionStarter]: At program point L607-2(lines 607 610) the Hoare annotation is: (<= 2 ULTIMATE.start_main_~len~0) [2019-01-14 16:35:24,565 INFO L448 ceAbstractionStarter]: For program point L607-3(lines 607 610) no Hoare annotation was computed. [2019-01-14 16:35:24,565 INFO L448 ceAbstractionStarter]: For program point L624(lines 624 626) no Hoare annotation was computed. [2019-01-14 16:35:24,565 INFO L444 ceAbstractionStarter]: At program point L600-2(lines 600 603) the Hoare annotation is: false [2019-01-14 16:35:24,566 INFO L448 ceAbstractionStarter]: For program point L600-3(lines 600 603) no Hoare annotation was computed. [2019-01-14 16:35:24,566 INFO L444 ceAbstractionStarter]: At program point L625(lines 613 632) the Hoare annotation is: false [2019-01-14 16:35:24,566 INFO L448 ceAbstractionStarter]: For program point L592(lines 592 598) no Hoare annotation was computed. [2019-01-14 16:35:24,566 INFO L448 ceAbstractionStarter]: For program point L584(lines 584 586) no Hoare annotation was computed. [2019-01-14 16:35:24,566 INFO L448 ceAbstractionStarter]: For program point L584-2(lines 584 586) no Hoare annotation was computed. [2019-01-14 16:35:24,566 INFO L444 ceAbstractionStarter]: At program point L576-2(lines 576 589) the Hoare annotation is: (<= 2 ULTIMATE.start_main_~len~0) [2019-01-14 16:35:24,566 INFO L448 ceAbstractionStarter]: For program point L576-3(lines 576 589) no Hoare annotation was computed. [2019-01-14 16:35:24,567 INFO L451 ceAbstractionStarter]: At program point L593-2(lines 593 597) the Hoare annotation is: true [2019-01-14 16:35:24,567 INFO L444 ceAbstractionStarter]: At program point L618-2(lines 618 621) the Hoare annotation is: (<= 2 ULTIMATE.start_main_~len~0) [2019-01-14 16:35:24,567 INFO L448 ceAbstractionStarter]: For program point L618-3(lines 618 621) no Hoare annotation was computed. [2019-01-14 16:35:24,567 INFO L448 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-01-14 16:35:24,567 INFO L448 ceAbstractionStarter]: For program point L578(lines 578 580) no Hoare annotation was computed. [2019-01-14 16:35:24,567 INFO L448 ceAbstractionStarter]: For program point L578-1(lines 578 580) no Hoare annotation was computed. [2019-01-14 16:35:24,567 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-01-14 16:35:24,568 INFO L451 ceAbstractionStarter]: At program point L562(line 562) the Hoare annotation is: true [2019-01-14 16:35:24,568 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 630) no Hoare annotation was computed. [2019-01-14 16:35:24,568 INFO L444 ceAbstractionStarter]: At program point L604(lines 599 605) the Hoare annotation is: false [2019-01-14 16:35:24,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 04:35:24 BoogieIcfgContainer [2019-01-14 16:35:24,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 16:35:24,581 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 16:35:24,581 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 16:35:24,581 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 16:35:24,583 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 04:35:22" (3/4) ... [2019-01-14 16:35:24,587 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-14 16:35:24,602 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-01-14 16:35:24,603 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-01-14 16:35:24,603 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-01-14 16:35:24,679 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 16:35:24,682 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 16:35:24,683 INFO L168 Benchmark]: Toolchain (without parser) took 3071.80 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 947.3 MB in the beginning and 980.9 MB in the end (delta: -33.6 MB). Peak memory consumption was 78.1 MB. Max. memory is 11.5 GB. [2019-01-14 16:35:24,685 INFO L168 Benchmark]: CDTParser took 0.16 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 16:35:24,685 INFO L168 Benchmark]: CACSL2BoogieTranslator took 664.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -143.7 MB). Peak memory consumption was 30.3 MB. Max. memory is 11.5 GB. [2019-01-14 16:35:24,686 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.12 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 16:35:24,686 INFO L168 Benchmark]: Boogie Preprocessor took 34.26 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-01-14 16:35:24,687 INFO L168 Benchmark]: RCFGBuilder took 579.95 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: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2019-01-14 16:35:24,687 INFO L168 Benchmark]: TraceAbstraction took 1618.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 980.9 MB in the end (delta: 78.3 MB). Peak memory consumption was 78.3 MB. Max. memory is 11.5 GB. [2019-01-14 16:35:24,688 INFO L168 Benchmark]: Witness Printer took 101.02 ms. Allocated memory is still 1.1 GB. Free memory is still 980.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 16:35:24,692 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 664.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -143.7 MB). Peak memory consumption was 30.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 67.12 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 34.26 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 579.95 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: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1618.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 980.9 MB in the end (delta: 78.3 MB). Peak memory consumption was 78.3 MB. Max. memory is 11.5 GB. * Witness Printer took 101.02 ms. Allocated memory is still 1.1 GB. Free memory is still 980.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 630]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 574]: Loop Invariant Derived loop invariant: 2 <= len - InvariantResult [Line: 576]: Loop Invariant Derived loop invariant: 2 <= len - InvariantResult [Line: 618]: Loop Invariant Derived loop invariant: 2 <= len - InvariantResult [Line: 607]: Loop Invariant Derived loop invariant: 2 <= len - InvariantResult [Line: 562]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 613]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 599]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 613]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 600]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 622]: Loop Invariant Derived loop invariant: 2 <= len && 1 <= i - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 96 SDtfs, 31 SDslu, 116 SDs, 0 SdLazy, 37 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 11 PreInvPairs, 23 NumberOfFragments, 25 HoareAnnotationTreeSize, 11 FomulaSimplifications, 23 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 4579 SizeOfPredicates, 5 NumberOfNonLiveVariables, 212 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 9/17 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...