./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loop-lit/hhk2008_true-unreach-call_true-termination.c.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/loop-lit/hhk2008_true-unreach-call_true-termination.c.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 ec3b2971b2acb4642d882078251a0cbf2b9f01e8 ............................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2018-12-31 06:14:21,460 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 06:14:21,462 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 06:14:21,475 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 06:14:21,475 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 06:14:21,476 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 06:14:21,478 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 06:14:21,480 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 06:14:21,482 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 06:14:21,483 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 06:14:21,484 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 06:14:21,484 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 06:14:21,486 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 06:14:21,487 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 06:14:21,488 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 06:14:21,489 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 06:14:21,490 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 06:14:21,493 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 06:14:21,495 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 06:14:21,497 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 06:14:21,498 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 06:14:21,500 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 06:14:21,503 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 06:14:21,503 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 06:14:21,503 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 06:14:21,504 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 06:14:21,506 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 06:14:21,507 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 06:14:21,508 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 06:14:21,509 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 06:14:21,510 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 06:14:21,510 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 06:14:21,511 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 06:14:21,511 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 06:14:21,513 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 06:14:21,513 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 06:14:21,514 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 06:14:21,531 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 06:14:21,532 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 06:14:21,533 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 06:14:21,533 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 06:14:21,534 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 06:14:21,534 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 06:14:21,534 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 06:14:21,534 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 06:14:21,534 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 06:14:21,535 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 06:14:21,536 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 06:14:21,536 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 06:14:21,536 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 06:14:21,536 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 06:14:21,536 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 06:14:21,536 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 06:14:21,537 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 06:14:21,537 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 06:14:21,537 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 06:14:21,537 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 06:14:21,537 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 06:14:21,537 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 06:14:21,539 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 06:14:21,539 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 06:14:21,539 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 06:14:21,540 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 06:14:21,540 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 06:14:21,540 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 06:14:21,540 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 -> ec3b2971b2acb4642d882078251a0cbf2b9f01e8 [2018-12-31 06:14:21,589 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 06:14:21,610 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 06:14:21,616 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 06:14:21,618 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 06:14:21,618 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 06:14:21,620 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-lit/hhk2008_true-unreach-call_true-termination.c.i [2018-12-31 06:14:21,700 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee1ab498d/94f9783247be4c3dbe319898da75a23b/FLAGfafbd6d09 [2018-12-31 06:14:22,211 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 06:14:22,212 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-lit/hhk2008_true-unreach-call_true-termination.c.i [2018-12-31 06:14:22,219 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee1ab498d/94f9783247be4c3dbe319898da75a23b/FLAGfafbd6d09 [2018-12-31 06:14:22,584 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee1ab498d/94f9783247be4c3dbe319898da75a23b [2018-12-31 06:14:22,588 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 06:14:22,590 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 06:14:22,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 06:14:22,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 06:14:22,596 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 06:14:22,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 06:14:22" (1/1) ... [2018-12-31 06:14:22,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ba69ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:14:22, skipping insertion in model container [2018-12-31 06:14:22,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 06:14:22" (1/1) ... [2018-12-31 06:14:22,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 06:14:22,629 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 06:14:22,795 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 06:14:22,801 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 06:14:22,820 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 06:14:22,837 INFO L195 MainTranslator]: Completed translation [2018-12-31 06:14:22,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:14:22 WrapperNode [2018-12-31 06:14:22,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 06:14:22,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 06:14:22,839 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 06:14:22,839 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 06:14:22,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:14:22" (1/1) ... [2018-12-31 06:14:22,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:14:22" (1/1) ... [2018-12-31 06:14:22,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 06:14:22,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 06:14:22,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 06:14:22,878 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 06:14:22,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:14:22" (1/1) ... [2018-12-31 06:14:22,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:14:22" (1/1) ... [2018-12-31 06:14:22,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:14:22" (1/1) ... [2018-12-31 06:14:22,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:14:22" (1/1) ... [2018-12-31 06:14:22,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:14:22" (1/1) ... [2018-12-31 06:14:22,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:14:22" (1/1) ... [2018-12-31 06:14:22,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:14:22" (1/1) ... [2018-12-31 06:14:22,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 06:14:22,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 06:14:22,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 06:14:22,902 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 06:14:22,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:14:22" (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 [2018-12-31 06:14:23,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 06:14:23,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 06:14:23,257 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 06:14:23,257 INFO L280 CfgBuilder]: Removed 7 assue(true) statements. [2018-12-31 06:14:23,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 06:14:23 BoogieIcfgContainer [2018-12-31 06:14:23,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 06:14:23,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 06:14:23,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 06:14:23,263 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 06:14:23,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 06:14:22" (1/3) ... [2018-12-31 06:14:23,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5867452c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 06:14:23, skipping insertion in model container [2018-12-31 06:14:23,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:14:22" (2/3) ... [2018-12-31 06:14:23,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5867452c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 06:14:23, skipping insertion in model container [2018-12-31 06:14:23,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 06:14:23" (3/3) ... [2018-12-31 06:14:23,268 INFO L112 eAbstractionObserver]: Analyzing ICFG hhk2008_true-unreach-call_true-termination.c.i [2018-12-31 06:14:23,279 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 06:14:23,287 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 06:14:23,307 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 06:14:23,376 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 06:14:23,377 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 06:14:23,378 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 06:14:23,378 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 06:14:23,378 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 06:14:23,378 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 06:14:23,379 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 06:14:23,379 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 06:14:23,379 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 06:14:23,408 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2018-12-31 06:14:23,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-31 06:14:23,420 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:14:23,422 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-31 06:14:23,425 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:14:23,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:14:23,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1482159475, now seen corresponding path program 1 times [2018-12-31 06:14:23,449 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:14:23,450 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:14:23,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:14:23,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 06:14:23,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:14:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:14:23,821 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 06:14:23,824 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 06:14:23,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-31 06:14:23,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-31 06:14:23,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-31 06:14:23,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-31 06:14:23,845 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 5 states. [2018-12-31 06:14:24,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:14:24,008 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2018-12-31 06:14:24,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-31 06:14:24,010 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2018-12-31 06:14:24,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:14:24,021 INFO L225 Difference]: With dead ends: 27 [2018-12-31 06:14:24,021 INFO L226 Difference]: Without dead ends: 9 [2018-12-31 06:14:24,025 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-12-31 06:14:24,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-12-31 06:14:24,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-12-31 06:14:24,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-12-31 06:14:24,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-12-31 06:14:24,057 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-12-31 06:14:24,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:14:24,057 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-12-31 06:14:24,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-31 06:14:24,058 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-12-31 06:14:24,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-31 06:14:24,058 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:14:24,058 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 06:14:24,059 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:14:24,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:14:24,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1299361911, now seen corresponding path program 1 times [2018-12-31 06:14:24,059 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:14:24,060 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:14:24,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:14:24,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 06:14:24,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:14:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:14:24,366 WARN L181 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2018-12-31 06:14:24,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:14:24,463 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 06:14:24,463 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 06:14:24,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 06:14:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:14:24,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 06:14:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:14:24,790 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 06:14:24,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-12-31 06:14:24,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-31 06:14:24,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-31 06:14:24,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-12-31 06:14:24,792 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 9 states. [2018-12-31 06:14:24,971 WARN L181 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2018-12-31 06:14:25,295 WARN L181 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2018-12-31 06:14:25,488 WARN L181 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-12-31 06:14:25,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:14:25,674 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2018-12-31 06:14:25,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-31 06:14:25,674 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 8 [2018-12-31 06:14:25,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:14:25,675 INFO L225 Difference]: With dead ends: 12 [2018-12-31 06:14:25,675 INFO L226 Difference]: Without dead ends: 0 [2018-12-31 06:14:25,677 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-12-31 06:14:25,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-31 06:14:25,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-31 06:14:25,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-31 06:14:25,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-31 06:14:25,679 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-12-31 06:14:25,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:14:25,679 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-31 06:14:25,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-31 06:14:25,679 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-31 06:14:25,679 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-31 06:14:25,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-31 06:14:25,757 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-31 06:14:25,757 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-12-31 06:14:25,758 INFO L451 ceAbstractionStarter]: At program point L23(lines 10 24) the Hoare annotation is: true [2018-12-31 06:14:25,758 INFO L448 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-12-31 06:14:25,758 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-12-31 06:14:25,758 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-12-31 06:14:25,758 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-31 06:14:25,759 INFO L444 ceAbstractionStarter]: At program point L18-2(lines 18 21) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~cnt~0)) (.cse1 (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= ULTIMATE.start_main_~res~0 .cse1))) [2018-12-31 06:14:25,759 INFO L448 ceAbstractionStarter]: For program point L18-3(lines 18 21) no Hoare annotation was computed. [2018-12-31 06:14:25,759 INFO L448 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-12-31 06:14:25,759 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-12-31 06:14:25,759 INFO L451 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2018-12-31 06:14:25,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 06:14:25 BoogieIcfgContainer [2018-12-31 06:14:25,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 06:14:25,773 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 06:14:25,774 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 06:14:25,774 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 06:14:25,774 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 06:14:23" (3/4) ... [2018-12-31 06:14:25,779 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-31 06:14:25,790 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-12-31 06:14:25,790 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-31 06:14:25,841 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 06:14:25,841 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 06:14:25,842 INFO L168 Benchmark]: Toolchain (without parser) took 3253.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 950.0 MB in the beginning and 1.0 GB in the end (delta: -68.5 MB). Peak memory consumption was 64.6 MB. Max. memory is 11.5 GB. [2018-12-31 06:14:25,844 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-12-31 06:14:25,844 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.19 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 939.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-31 06:14:25,845 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.22 ms. Allocated memory is still 1.0 GB. Free memory is still 939.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 06:14:25,846 INFO L168 Benchmark]: Boogie Preprocessor took 24.01 ms. Allocated memory is still 1.0 GB. Free memory is still 939.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 06:14:25,846 INFO L168 Benchmark]: RCFGBuilder took 355.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -168.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2018-12-31 06:14:25,847 INFO L168 Benchmark]: TraceAbstraction took 2514.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 82.1 MB). Peak memory consumption was 82.1 MB. Max. memory is 11.5 GB. [2018-12-31 06:14:25,848 INFO L168 Benchmark]: Witness Printer took 67.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-31 06:14:25,853 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 246.19 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 939.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.22 ms. Allocated memory is still 1.0 GB. Free memory is still 939.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.01 ms. Allocated memory is still 1.0 GB. Free memory is still 939.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 355.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -168.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2514.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 82.1 MB). Peak memory consumption was 82.1 MB. Max. memory is 11.5 GB. * Witness Printer took 67.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 18]: Loop Invariant Derived loop invariant: (res + cnt <= a + b && a + b <= res + cnt) && res <= a + b - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. SAFE Result, 2.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 15 SDtfs, 28 SDslu, 18 SDs, 0 SdLazy, 43 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 9 NumberOfFragments, 22 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 49 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 846 SizeOfPredicates, 6 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...