./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 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/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 0.1.24-0ed9222-m [2019-01-14 17:37:52,545 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 17:37:52,547 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 17:37:52,566 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 17:37:52,567 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 17:37:52,568 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 17:37:52,572 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 17:37:52,574 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 17:37:52,578 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 17:37:52,579 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 17:37:52,588 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 17:37:52,588 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 17:37:52,589 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 17:37:52,590 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 17:37:52,592 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 17:37:52,593 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 17:37:52,594 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 17:37:52,597 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 17:37:52,602 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 17:37:52,605 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 17:37:52,607 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 17:37:52,609 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 17:37:52,611 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 17:37:52,612 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 17:37:52,613 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 17:37:52,613 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 17:37:52,617 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 17:37:52,621 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 17:37:52,622 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 17:37:52,622 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 17:37:52,623 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 17:37:52,623 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 17:37:52,623 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 17:37:52,624 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 17:37:52,627 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 17:37:52,628 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 17:37:52,630 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-14 17:37:52,657 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 17:37:52,658 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 17:37:52,660 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 17:37:52,660 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 17:37:52,661 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 17:37:52,661 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 17:37:52,661 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 17:37:52,661 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 17:37:52,661 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 17:37:52,662 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 17:37:52,663 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 17:37:52,663 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 17:37:52,663 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 17:37:52,663 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 17:37:52,664 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 17:37:52,664 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 17:37:52,664 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 17:37:52,664 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 17:37:52,664 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 17:37:52,665 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 17:37:52,665 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 17:37:52,666 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 17:37:52,666 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 17:37:52,666 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 17:37:52,666 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 17:37:52,666 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 17:37:52,666 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 17:37:52,667 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 [2019-01-14 17:37:52,707 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 17:37:52,719 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 17:37:52,725 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 17:37:52,727 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 17:37:52,727 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 17:37:52,728 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-lit/hhk2008_true-unreach-call_true-termination.c.i [2019-01-14 17:37:52,784 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12a6de537/2f1281963891463aa6e78ca30ae59f83/FLAGeb20ccc3c [2019-01-14 17:37:53,136 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 17:37:53,136 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-lit/hhk2008_true-unreach-call_true-termination.c.i [2019-01-14 17:37:53,141 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12a6de537/2f1281963891463aa6e78ca30ae59f83/FLAGeb20ccc3c [2019-01-14 17:37:53,533 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12a6de537/2f1281963891463aa6e78ca30ae59f83 [2019-01-14 17:37:53,536 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 17:37:53,537 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 17:37:53,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 17:37:53,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 17:37:53,541 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 17:37:53,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 05:37:53" (1/1) ... [2019-01-14 17:37:53,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ce94a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:37:53, skipping insertion in model container [2019-01-14 17:37:53,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 05:37:53" (1/1) ... [2019-01-14 17:37:53,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 17:37:53,568 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 17:37:53,775 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 17:37:53,783 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 17:37:53,813 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 17:37:53,834 INFO L195 MainTranslator]: Completed translation [2019-01-14 17:37:53,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:37:53 WrapperNode [2019-01-14 17:37:53,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 17:37:53,835 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 17:37:53,835 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 17:37:53,836 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 17:37:53,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:37:53" (1/1) ... [2019-01-14 17:37:53,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:37:53" (1/1) ... [2019-01-14 17:37:53,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 17:37:53,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 17:37:53,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 17:37:53,876 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 17:37:53,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:37:53" (1/1) ... [2019-01-14 17:37:53,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:37:53" (1/1) ... [2019-01-14 17:37:53,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:37:53" (1/1) ... [2019-01-14 17:37:53,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:37:53" (1/1) ... [2019-01-14 17:37:53,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:37:53" (1/1) ... [2019-01-14 17:37:53,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:37:53" (1/1) ... [2019-01-14 17:37:53,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:37:53" (1/1) ... [2019-01-14 17:37:53,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 17:37:53,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 17:37:53,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 17:37:53,910 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 17:37:53,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:37:53" (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 17:37:54,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 17:37:54,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 17:37:54,269 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 17:37:54,270 INFO L286 CfgBuilder]: Removed 7 assue(true) statements. [2019-01-14 17:37:54,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 05:37:54 BoogieIcfgContainer [2019-01-14 17:37:54,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 17:37:54,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 17:37:54,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 17:37:54,275 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 17:37:54,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 05:37:53" (1/3) ... [2019-01-14 17:37:54,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2adbdefc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 05:37:54, skipping insertion in model container [2019-01-14 17:37:54,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:37:53" (2/3) ... [2019-01-14 17:37:54,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2adbdefc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 05:37:54, skipping insertion in model container [2019-01-14 17:37:54,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 05:37:54" (3/3) ... [2019-01-14 17:37:54,279 INFO L112 eAbstractionObserver]: Analyzing ICFG hhk2008_true-unreach-call_true-termination.c.i [2019-01-14 17:37:54,289 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 17:37:54,296 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-14 17:37:54,316 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-14 17:37:54,353 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 17:37:54,355 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 17:37:54,355 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 17:37:54,355 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 17:37:54,355 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 17:37:54,356 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 17:37:54,356 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 17:37:54,356 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 17:37:54,356 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 17:37:54,375 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-01-14 17:37:54,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-01-14 17:37:54,383 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 17:37:54,384 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-01-14 17:37:54,387 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 17:37:54,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 17:37:54,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1482159475, now seen corresponding path program 1 times [2019-01-14 17:37:54,396 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 17:37:54,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 17:37:54,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:37:54,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 17:37:54,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:37:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 17:37:54,765 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 17:37:54,767 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 17:37:54,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-14 17:37:54,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-14 17:37:54,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-14 17:37:54,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-01-14 17:37:54,785 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 5 states. [2019-01-14 17:37:54,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 17:37:54,889 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2019-01-14 17:37:54,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-14 17:37:54,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-01-14 17:37:54,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 17:37:54,906 INFO L225 Difference]: With dead ends: 27 [2019-01-14 17:37:54,907 INFO L226 Difference]: Without dead ends: 9 [2019-01-14 17:37:54,910 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 [2019-01-14 17:37:54,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-01-14 17:37:54,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-01-14 17:37:54,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-01-14 17:37:54,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-01-14 17:37:54,941 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2019-01-14 17:37:54,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 17:37:54,942 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-01-14 17:37:54,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-14 17:37:54,943 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-01-14 17:37:54,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-01-14 17:37:54,943 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 17:37:54,944 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 17:37:54,944 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 17:37:54,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 17:37:54,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1299361911, now seen corresponding path program 1 times [2019-01-14 17:37:54,944 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 17:37:54,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 17:37:54,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:37:54,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 17:37:54,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:37:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 17:37:55,226 WARN L181 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2019-01-14 17:37:55,399 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 17:37:55,400 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-14 17:37:55,400 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 17:37:55,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 17:37:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 17:37:55,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 17:37:55,662 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 17:37:55,681 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-14 17:37:55,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-01-14 17:37:55,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-01-14 17:37:55,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-01-14 17:37:55,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-01-14 17:37:55,684 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 9 states. [2019-01-14 17:37:55,847 WARN L181 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2019-01-14 17:37:56,292 WARN L181 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-01-14 17:37:56,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 17:37:56,461 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-01-14 17:37:56,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-01-14 17:37:56,462 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 8 [2019-01-14 17:37:56,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 17:37:56,463 INFO L225 Difference]: With dead ends: 12 [2019-01-14 17:37:56,463 INFO L226 Difference]: Without dead ends: 0 [2019-01-14 17:37:56,464 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2019-01-14 17:37:56,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-14 17:37:56,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-14 17:37:56,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-14 17:37:56,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-14 17:37:56,466 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-01-14 17:37:56,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 17:37:56,467 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 17:37:56,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-01-14 17:37:56,467 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-14 17:37:56,467 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-14 17:37:56,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-14 17:37:56,538 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-01-14 17:37:56,539 INFO L451 ceAbstractionStarter]: At program point L23(lines 10 24) the Hoare annotation is: true [2019-01-14 17:37:56,539 INFO L448 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2019-01-14 17:37:56,539 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-01-14 17:37:56,540 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-01-14 17:37:56,540 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-01-14 17:37:56,540 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-01-14 17:37:56,541 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))) [2019-01-14 17:37:56,541 INFO L448 ceAbstractionStarter]: For program point L18-3(lines 18 21) no Hoare annotation was computed. [2019-01-14 17:37:56,541 INFO L448 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-01-14 17:37:56,542 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-01-14 17:37:56,542 INFO L451 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-01-14 17:37:56,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 05:37:56 BoogieIcfgContainer [2019-01-14 17:37:56,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 17:37:56,554 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 17:37:56,555 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 17:37:56,555 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 17:37:56,555 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 05:37:54" (3/4) ... [2019-01-14 17:37:56,559 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-14 17:37:56,571 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-01-14 17:37:56,571 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-01-14 17:37:56,622 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 17:37:56,622 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 17:37:56,623 INFO L168 Benchmark]: Toolchain (without parser) took 3086.42 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 72.4 MB). Free memory was 951.3 MB in the beginning and 957.7 MB in the end (delta: -6.4 MB). Peak memory consumption was 65.9 MB. Max. memory is 11.5 GB. [2019-01-14 17:37:56,624 INFO L168 Benchmark]: CDTParser took 0.39 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 17:37:56,624 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.07 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-14 17:37:56,625 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.57 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 17:37:56,626 INFO L168 Benchmark]: Boogie Preprocessor took 33.71 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 17:37:56,626 INFO L168 Benchmark]: RCFGBuilder took 361.21 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 72.4 MB). Free memory was 940.6 MB in the beginning and 1.0 GB in the end (delta: -104.0 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-01-14 17:37:56,627 INFO L168 Benchmark]: TraceAbstraction took 2281.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 957.7 MB in the end (delta: 86.9 MB). Peak memory consumption was 86.9 MB. Max. memory is 11.5 GB. [2019-01-14 17:37:56,628 INFO L168 Benchmark]: Witness Printer took 67.49 ms. Allocated memory is still 1.1 GB. Free memory is still 957.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 17:37:56,632 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 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 297.07 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 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 40.57 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.71 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 361.21 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 72.4 MB). Free memory was 940.6 MB in the beginning and 1.0 GB in the end (delta: -104.0 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2281.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 957.7 MB in the end (delta: 86.9 MB). Peak memory consumption was 86.9 MB. Max. memory is 11.5 GB. * Witness Printer took 67.49 ms. Allocated memory is still 1.1 GB. Free memory is still 957.7 MB. There was no memory consumed. 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, 2.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 15 SDtfs, 28 SDslu, 18 SDs, 0 SdLazy, 43 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.4s 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...