./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loop-lit/cggmp2005_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/cggmp2005_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 6ee0c0bb9185005ad94b7785b09df595a41ce360 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-12 11:24:20,215 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 11:24:20,217 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 11:24:20,234 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-12 11:24:20,235 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-12 11:24:20,237 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-12 11:24:20,238 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-12 11:24:20,241 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-12 11:24:20,243 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-12 11:24:20,245 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-12 11:24:20,247 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-12 11:24:20,248 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-12 11:24:20,249 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-12 11:24:20,252 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-12 11:24:20,259 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-12 11:24:20,261 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-12 11:24:20,263 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-12 11:24:20,267 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-12 11:24:20,270 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-12 11:24:20,273 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-12 11:24:20,276 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-12 11:24:20,279 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-12 11:24:20,285 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-12 11:24:20,285 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 11:24:20,286 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 11:24:20,286 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 11:24:20,288 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 11:24:20,291 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 11:24:20,292 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 11:24:20,295 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 11:24:20,296 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 11:24:20,297 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 11:24:20,297 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 11:24:20,297 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 11:24:20,300 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 11:24:20,301 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 11:24:20,303 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-12 11:24:20,325 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 11:24:20,325 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 11:24:20,327 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 11:24:20,327 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 11:24:20,328 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 11:24:20,328 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 11:24:20,328 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 11:24:20,329 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-12 11:24:20,329 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 11:24:20,329 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 11:24:20,329 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 11:24:20,330 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 11:24:20,330 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 11:24:20,330 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 11:24:20,331 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 11:24:20,331 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 11:24:20,331 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 11:24:20,331 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 11:24:20,332 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 11:24:20,333 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 11:24:20,333 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 11:24:20,333 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 11:24:20,334 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 11:24:20,334 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 11:24:20,334 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 11:24:20,334 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-12 11:24:20,334 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 11:24:20,334 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-12 11:24:20,335 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 -> 6ee0c0bb9185005ad94b7785b09df595a41ce360 [2019-01-12 11:24:20,385 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 11:24:20,402 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 11:24:20,406 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 11:24:20,407 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 11:24:20,408 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 11:24:20,408 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-lit/cggmp2005_true-unreach-call_true-termination.c.i [2019-01-12 11:24:20,464 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34af24907/dfe2d316f8cc409fbf452b44785e9411/FLAGb11fc2ae1 [2019-01-12 11:24:20,882 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 11:24:20,882 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-lit/cggmp2005_true-unreach-call_true-termination.c.i [2019-01-12 11:24:20,887 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34af24907/dfe2d316f8cc409fbf452b44785e9411/FLAGb11fc2ae1 [2019-01-12 11:24:21,265 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34af24907/dfe2d316f8cc409fbf452b44785e9411 [2019-01-12 11:24:21,269 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 11:24:21,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 11:24:21,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 11:24:21,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 11:24:21,275 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 11:24:21,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 11:24:21" (1/1) ... [2019-01-12 11:24:21,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b6b7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:24:21, skipping insertion in model container [2019-01-12 11:24:21,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 11:24:21" (1/1) ... [2019-01-12 11:24:21,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 11:24:21,309 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 11:24:21,475 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 11:24:21,483 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 11:24:21,496 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 11:24:21,512 INFO L195 MainTranslator]: Completed translation [2019-01-12 11:24:21,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:24:21 WrapperNode [2019-01-12 11:24:21,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 11:24:21,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 11:24:21,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 11:24:21,514 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 11:24:21,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:24:21" (1/1) ... [2019-01-12 11:24:21,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:24:21" (1/1) ... [2019-01-12 11:24:21,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 11:24:21,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 11:24:21,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 11:24:21,549 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 11:24:21,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:24:21" (1/1) ... [2019-01-12 11:24:21,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:24:21" (1/1) ... [2019-01-12 11:24:21,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:24:21" (1/1) ... [2019-01-12 11:24:21,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:24:21" (1/1) ... [2019-01-12 11:24:21,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:24:21" (1/1) ... [2019-01-12 11:24:21,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:24:21" (1/1) ... [2019-01-12 11:24:21,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:24:21" (1/1) ... [2019-01-12 11:24:21,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 11:24:21,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 11:24:21,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 11:24:21,571 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 11:24:21,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:24:21" (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 [2019-01-12 11:24:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 11:24:21,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 11:24:21,850 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 11:24:21,851 INFO L286 CfgBuilder]: Removed 7 assue(true) statements. [2019-01-12 11:24:21,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 11:24:21 BoogieIcfgContainer [2019-01-12 11:24:21,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 11:24:21,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 11:24:21,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 11:24:21,856 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 11:24:21,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 11:24:21" (1/3) ... [2019-01-12 11:24:21,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd56a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 11:24:21, skipping insertion in model container [2019-01-12 11:24:21,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 11:24:21" (2/3) ... [2019-01-12 11:24:21,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd56a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 11:24:21, skipping insertion in model container [2019-01-12 11:24:21,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 11:24:21" (3/3) ... [2019-01-12 11:24:21,859 INFO L112 eAbstractionObserver]: Analyzing ICFG cggmp2005_true-unreach-call_true-termination.c.i [2019-01-12 11:24:21,867 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 11:24:21,875 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-12 11:24:21,890 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-12 11:24:21,918 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 11:24:21,919 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 11:24:21,919 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 11:24:21,919 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 11:24:21,919 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 11:24:21,920 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 11:24:21,920 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 11:24:21,920 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 11:24:21,920 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 11:24:21,934 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-01-12 11:24:21,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-01-12 11:24:21,940 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 11:24:21,941 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-01-12 11:24:21,944 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 11:24:21,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 11:24:21,949 INFO L82 PathProgramCache]: Analyzing trace with hash 29805000, now seen corresponding path program 1 times [2019-01-12 11:24:21,952 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 11:24:21,952 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 11:24:21,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 11:24:21,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 11:24:21,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 11:24:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 11:24:22,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 11:24:22,084 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 11:24:22,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-12 11:24:22,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-12 11:24:22,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-12 11:24:22,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-12 11:24:22,102 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2019-01-12 11:24:22,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 11:24:22,152 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2019-01-12 11:24:22,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-12 11:24:22,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-01-12 11:24:22,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 11:24:22,169 INFO L225 Difference]: With dead ends: 19 [2019-01-12 11:24:22,169 INFO L226 Difference]: Without dead ends: 7 [2019-01-12 11:24:22,174 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-12 11:24:22,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-01-12 11:24:22,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-01-12 11:24:22,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-01-12 11:24:22,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-01-12 11:24:22,218 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2019-01-12 11:24:22,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 11:24:22,219 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-01-12 11:24:22,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-12 11:24:22,219 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-01-12 11:24:22,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-01-12 11:24:22,220 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 11:24:22,220 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-01-12 11:24:22,220 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 11:24:22,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 11:24:22,221 INFO L82 PathProgramCache]: Analyzing trace with hash 925620370, now seen corresponding path program 1 times [2019-01-12 11:24:22,221 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 11:24:22,221 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 11:24:22,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 11:24:22,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 11:24:22,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 11:24:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 11:24:22,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 11:24:22,360 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-12 11:24:22,360 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 [2019-01-12 11:24:22,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 11:24:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 11:24:22,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 11:24:22,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 11:24:22,507 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-12 11:24:22,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-01-12 11:24:22,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-12 11:24:22,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-12 11:24:22,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-01-12 11:24:22,510 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2019-01-12 11:24:22,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 11:24:22,554 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-01-12 11:24:22,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 11:24:22,555 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-01-12 11:24:22,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 11:24:22,556 INFO L225 Difference]: With dead ends: 12 [2019-01-12 11:24:22,556 INFO L226 Difference]: Without dead ends: 8 [2019-01-12 11:24:22,557 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-01-12 11:24:22,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-01-12 11:24:22,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-01-12 11:24:22,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-01-12 11:24:22,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-01-12 11:24:22,561 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-01-12 11:24:22,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 11:24:22,561 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-01-12 11:24:22,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-12 11:24:22,561 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-01-12 11:24:22,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-01-12 11:24:22,562 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 11:24:22,562 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-01-12 11:24:22,562 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 11:24:22,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 11:24:22,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1368874232, now seen corresponding path program 2 times [2019-01-12 11:24:22,563 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 11:24:22,563 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 11:24:22,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 11:24:22,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 11:24:22,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 11:24:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 11:24:22,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 11:24:22,636 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-12 11:24:22,637 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 [2019-01-12 11:24:22,651 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-01-12 11:24:22,692 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-01-12 11:24:22,692 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-01-12 11:24:22,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 11:24:22,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 11:24:22,894 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-12 11:24:22,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-01-12 11:24:22,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-01-12 11:24:22,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-01-12 11:24:22,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-01-12 11:24:22,896 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 8 states. [2019-01-12 11:24:22,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 11:24:22,953 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-01-12 11:24:22,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-12 11:24:22,956 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2019-01-12 11:24:22,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 11:24:22,957 INFO L225 Difference]: With dead ends: 13 [2019-01-12 11:24:22,957 INFO L226 Difference]: Without dead ends: 9 [2019-01-12 11:24:22,958 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-01-12 11:24:22,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-01-12 11:24:22,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-01-12 11:24:22,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-01-12 11:24:22,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-01-12 11:24:22,969 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2019-01-12 11:24:22,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 11:24:22,969 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-01-12 11:24:22,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-01-12 11:24:22,970 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-01-12 11:24:22,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-01-12 11:24:22,970 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 11:24:22,970 INFO L402 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2019-01-12 11:24:22,972 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 11:24:22,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 11:24:22,973 INFO L82 PathProgramCache]: Analyzing trace with hash 516237138, now seen corresponding path program 3 times [2019-01-12 11:24:22,973 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 11:24:22,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 11:24:22,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 11:24:22,976 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-12 11:24:22,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 11:24:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 11:24:23,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 11:24:23,228 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-12 11:24:23,228 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-12 11:24:23,242 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-01-12 11:24:23,284 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-01-12 11:24:23,285 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-01-12 11:24:23,286 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 11:24:23,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 11:24:23,399 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-12 11:24:23,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2019-01-12 11:24:23,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-01-12 11:24:23,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-01-12 11:24:23,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2019-01-12 11:24:23,401 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 10 states. [2019-01-12 11:24:23,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 11:24:23,456 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2019-01-12 11:24:23,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-01-12 11:24:23,456 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 8 [2019-01-12 11:24:23,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 11:24:23,457 INFO L225 Difference]: With dead ends: 14 [2019-01-12 11:24:23,457 INFO L226 Difference]: Without dead ends: 10 [2019-01-12 11:24:23,458 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2019-01-12 11:24:23,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-01-12 11:24:23,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-01-12 11:24:23,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-01-12 11:24:23,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-01-12 11:24:23,461 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2019-01-12 11:24:23,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 11:24:23,461 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-01-12 11:24:23,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-01-12 11:24:23,462 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-01-12 11:24:23,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-01-12 11:24:23,462 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 11:24:23,462 INFO L402 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2019-01-12 11:24:23,463 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 11:24:23,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 11:24:23,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1174852536, now seen corresponding path program 4 times [2019-01-12 11:24:23,463 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 11:24:23,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 11:24:23,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 11:24:23,464 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-12 11:24:23,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 11:24:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 11:24:23,700 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 11:24:23,704 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-12 11:24:23,704 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-12 11:24:23,716 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-01-12 11:24:23,725 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-01-12 11:24:23,726 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-01-12 11:24:23,727 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 11:24:23,789 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 11:24:23,808 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-12 11:24:23,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-01-12 11:24:23,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-01-12 11:24:23,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-01-12 11:24:23,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-01-12 11:24:23,810 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2019-01-12 11:24:23,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 11:24:23,964 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-01-12 11:24:23,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-01-12 11:24:23,965 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2019-01-12 11:24:23,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 11:24:23,966 INFO L225 Difference]: With dead ends: 15 [2019-01-12 11:24:23,966 INFO L226 Difference]: Without dead ends: 11 [2019-01-12 11:24:23,967 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-01-12 11:24:23,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-01-12 11:24:23,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-01-12 11:24:23,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-01-12 11:24:23,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-01-12 11:24:23,977 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2019-01-12 11:24:23,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 11:24:23,977 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-01-12 11:24:23,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-01-12 11:24:23,978 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-01-12 11:24:23,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-12 11:24:23,980 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 11:24:23,980 INFO L402 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1] [2019-01-12 11:24:23,980 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 11:24:23,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 11:24:23,983 INFO L82 PathProgramCache]: Analyzing trace with hash -2059024878, now seen corresponding path program 5 times [2019-01-12 11:24:23,983 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 11:24:23,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 11:24:23,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 11:24:23,986 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-12 11:24:23,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 11:24:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 11:24:24,298 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 11:24:24,299 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 11:24:24,299 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-01-12 11:24:24,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-01-12 11:24:24,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-01-12 11:24:24,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-01-12 11:24:24,301 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2019-01-12 11:24:24,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 11:24:24,315 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2019-01-12 11:24:24,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-01-12 11:24:24,316 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2019-01-12 11:24:24,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 11:24:24,316 INFO L225 Difference]: With dead ends: 11 [2019-01-12 11:24:24,317 INFO L226 Difference]: Without dead ends: 0 [2019-01-12 11:24:24,317 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-01-12 11:24:24,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-12 11:24:24,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-12 11:24:24,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-12 11:24:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-12 11:24:24,318 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-01-12 11:24:24,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 11:24:24,319 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-12 11:24:24,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-01-12 11:24:24,319 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-12 11:24:24,319 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-12 11:24:24,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-12 11:24:24,509 WARN L181 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2019-01-12 11:24:24,514 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-01-12 11:24:24,514 INFO L451 ceAbstractionStarter]: At program point L19(lines 10 20) the Hoare annotation is: true [2019-01-12 11:24:24,514 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-01-12 11:24:24,514 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-01-12 11:24:24,515 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-01-12 11:24:24,515 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-01-12 11:24:24,515 INFO L444 ceAbstractionStarter]: At program point L14-2(lines 14 17) the Hoare annotation is: (or (and (< 5 ULTIMATE.start_main_~j~0) (<= (+ ULTIMATE.start_main_~j~0 3) ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 6)) (and (<= ULTIMATE.start_main_~j~0 (+ ULTIMATE.start_main_~i~0 3)) (<= ULTIMATE.start_main_~i~0 5) (<= 8 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~i~0 1) (<= 10 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 (+ ULTIMATE.start_main_~i~0 9))) (and (<= 9 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 (+ ULTIMATE.start_main_~i~0 6)) (<= ULTIMATE.start_main_~i~0 3)) (and (<= 7 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 7))) [2019-01-12 11:24:24,515 INFO L448 ceAbstractionStarter]: For program point L14-3(lines 14 17) no Hoare annotation was computed. [2019-01-12 11:24:24,515 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-01-12 11:24:24,515 INFO L451 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-01-12 11:24:24,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 11:24:24 BoogieIcfgContainer [2019-01-12 11:24:24,532 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 11:24:24,532 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 11:24:24,533 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 11:24:24,534 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 11:24:24,534 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 11:24:21" (3/4) ... [2019-01-12 11:24:24,538 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-12 11:24:24,547 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-01-12 11:24:24,547 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-01-12 11:24:24,587 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-12 11:24:24,587 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 11:24:24,588 INFO L168 Benchmark]: Toolchain (without parser) took 3318.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 951.3 MB in the beginning and 988.2 MB in the end (delta: -36.9 MB). Peak memory consumption was 103.1 MB. Max. memory is 11.5 GB. [2019-01-12 11:24:24,589 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. [2019-01-12 11:24:24,590 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.37 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. [2019-01-12 11:24:24,591 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.03 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. [2019-01-12 11:24:24,591 INFO L168 Benchmark]: Boogie Preprocessor took 21.56 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. [2019-01-12 11:24:24,592 INFO L168 Benchmark]: RCFGBuilder took 281.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -176.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2019-01-12 11:24:24,593 INFO L168 Benchmark]: TraceAbstraction took 2679.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 988.2 MB in the end (delta: 128.8 MB). Peak memory consumption was 128.8 MB. Max. memory is 11.5 GB. [2019-01-12 11:24:24,594 INFO L168 Benchmark]: Witness Printer took 54.84 ms. Allocated memory is still 1.2 GB. Free memory is still 988.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 11:24:24,598 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 241.37 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 35.03 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 21.56 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 281.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -176.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2679.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 988.2 MB in the end (delta: 128.8 MB). Peak memory consumption was 128.8 MB. Max. memory is 11.5 GB. * Witness Printer took 54.84 ms. Allocated memory is still 1.2 GB. Free memory is still 988.2 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: 14]: Loop Invariant Derived loop invariant: (((((5 < j && j + 3 <= i) && j <= 6) || ((j <= i + 3 && i <= 5) && 8 <= j)) || ((i <= 1 && 10 <= j) && j <= i + 9)) || ((9 <= j && j <= i + 6) && i <= 3)) || ((7 <= j && j <= i) && i <= 7) - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. SAFE Result, 2.6s OverallTime, 6 OverallIterations, 5 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 1 SDslu, 44 SDs, 0 SdLazy, 104 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=5, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 61 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 1777 SizeOfPredicates, 9 NumberOfNonLiveVariables, 106 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 15/55 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...