./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loop-lit/cggmp2005b_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/cggmp2005b_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 7408fe5ba42f5c474832c90e26f3e7ef2342554c ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 17:37:39,134 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 17:37:39,136 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 17:37:39,153 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 17:37:39,155 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 17:37:39,157 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 17:37:39,161 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 17:37:39,164 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 17:37:39,167 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 17:37:39,171 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 17:37:39,173 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 17:37:39,174 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 17:37:39,176 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 17:37:39,179 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 17:37:39,187 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 17:37:39,188 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 17:37:39,188 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 17:37:39,194 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 17:37:39,199 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 17:37:39,202 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 17:37:39,203 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 17:37:39,205 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 17:37:39,210 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 17:37:39,212 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 17:37:39,212 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 17:37:39,213 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 17:37:39,214 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 17:37:39,217 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 17:37:39,218 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 17:37:39,219 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 17:37:39,219 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 17:37:39,220 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 17:37:39,220 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 17:37:39,220 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 17:37:39,221 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 17:37:39,222 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 17:37:39,222 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-14 17:37:39,245 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 17:37:39,245 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 17:37:39,246 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 17:37:39,246 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 17:37:39,247 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 17:37:39,247 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 17:37:39,247 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 17:37:39,247 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 17:37:39,248 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 17:37:39,248 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 17:37:39,248 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 17:37:39,248 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 17:37:39,248 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 17:37:39,248 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 17:37:39,249 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 17:37:39,249 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 17:37:39,249 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 17:37:39,249 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 17:37:39,249 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 17:37:39,250 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 17:37:39,250 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 17:37:39,250 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 17:37:39,250 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 17:37:39,250 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 17:37:39,251 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 17:37:39,251 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 17:37:39,251 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 17:37:39,251 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 -> 7408fe5ba42f5c474832c90e26f3e7ef2342554c [2019-01-14 17:37:39,304 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 17:37:39,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 17:37:39,322 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 17:37:39,326 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 17:37:39,326 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 17:37:39,327 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-lit/cggmp2005b_true-unreach-call_true-termination.c.i [2019-01-14 17:37:39,393 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b5e8947f/3efdfe5936c3403482c47346b3ae0579/FLAGeddd2d186 [2019-01-14 17:37:39,840 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 17:37:39,841 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-lit/cggmp2005b_true-unreach-call_true-termination.c.i [2019-01-14 17:37:39,847 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b5e8947f/3efdfe5936c3403482c47346b3ae0579/FLAGeddd2d186 [2019-01-14 17:37:40,205 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b5e8947f/3efdfe5936c3403482c47346b3ae0579 [2019-01-14 17:37:40,208 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 17:37:40,209 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 17:37:40,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 17:37:40,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 17:37:40,214 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 17:37:40,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 05:37:40" (1/1) ... [2019-01-14 17:37:40,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b38cce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:37:40, skipping insertion in model container [2019-01-14 17:37:40,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 05:37:40" (1/1) ... [2019-01-14 17:37:40,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 17:37:40,248 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 17:37:40,431 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 17:37:40,436 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 17:37:40,453 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 17:37:40,469 INFO L195 MainTranslator]: Completed translation [2019-01-14 17:37:40,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:37:40 WrapperNode [2019-01-14 17:37:40,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 17:37:40,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 17:37:40,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 17:37:40,471 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 17:37:40,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:37:40" (1/1) ... [2019-01-14 17:37:40,487 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:37:40" (1/1) ... [2019-01-14 17:37:40,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 17:37:40,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 17:37:40,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 17:37:40,508 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 17:37:40,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:37:40" (1/1) ... [2019-01-14 17:37:40,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:37:40" (1/1) ... [2019-01-14 17:37:40,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:37:40" (1/1) ... [2019-01-14 17:37:40,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:37:40" (1/1) ... [2019-01-14 17:37:40,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:37:40" (1/1) ... [2019-01-14 17:37:40,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:37:40" (1/1) ... [2019-01-14 17:37:40,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:37:40" (1/1) ... [2019-01-14 17:37:40,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 17:37:40,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 17:37:40,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 17:37:40,540 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 17:37:40,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:37:40" (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 17:37:40,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 17:37:40,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 17:37:40,847 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 17:37:40,848 INFO L286 CfgBuilder]: Removed 9 assue(true) statements. [2019-01-14 17:37:40,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 05:37:40 BoogieIcfgContainer [2019-01-14 17:37:40,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 17:37:40,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 17:37:40,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 17:37:40,854 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 17:37:40,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 05:37:40" (1/3) ... [2019-01-14 17:37:40,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0c6031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 05:37:40, skipping insertion in model container [2019-01-14 17:37:40,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:37:40" (2/3) ... [2019-01-14 17:37:40,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0c6031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 05:37:40, skipping insertion in model container [2019-01-14 17:37:40,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 05:37:40" (3/3) ... [2019-01-14 17:37:40,857 INFO L112 eAbstractionObserver]: Analyzing ICFG cggmp2005b_true-unreach-call_true-termination.c.i [2019-01-14 17:37:40,867 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 17:37:40,874 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-14 17:37:40,890 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-14 17:37:40,920 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 17:37:40,921 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 17:37:40,921 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 17:37:40,922 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 17:37:40,922 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 17:37:40,922 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 17:37:40,922 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 17:37:40,922 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 17:37:40,922 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 17:37:40,936 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-01-14 17:37:40,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-01-14 17:37:40,942 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 17:37:40,943 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-01-14 17:37:40,945 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 17:37:40,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 17:37:40,951 INFO L82 PathProgramCache]: Analyzing trace with hash 30693764, now seen corresponding path program 1 times [2019-01-14 17:37:40,952 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 17:37:40,953 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 17:37:40,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:37:40,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 17:37:40,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:37:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 17:37:41,046 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 17:37:41,049 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 17:37:41,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 17:37:41,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-14 17:37:41,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-14 17:37:41,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-14 17:37:41,069 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2019-01-14 17:37:41,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 17:37:41,086 INFO L93 Difference]: Finished difference Result 25 states and 37 transitions. [2019-01-14 17:37:41,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-14 17:37:41,088 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-01-14 17:37:41,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 17:37:41,101 INFO L225 Difference]: With dead ends: 25 [2019-01-14 17:37:41,103 INFO L226 Difference]: Without dead ends: 9 [2019-01-14 17:37:41,107 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-14 17:37:41,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-01-14 17:37:41,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-01-14 17:37:41,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-01-14 17:37:41,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2019-01-14 17:37:41,143 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 5 [2019-01-14 17:37:41,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 17:37:41,143 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2019-01-14 17:37:41,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-14 17:37:41,144 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2019-01-14 17:37:41,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-01-14 17:37:41,144 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 17:37:41,144 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-01-14 17:37:41,145 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 17:37:41,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 17:37:41,146 INFO L82 PathProgramCache]: Analyzing trace with hash 29829825, now seen corresponding path program 1 times [2019-01-14 17:37:41,146 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 17:37:41,146 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 17:37:41,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:37:41,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 17:37:41,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:37:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 17:37:41,226 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 17:37:41,227 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 17:37:41,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 17:37:41,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 17:37:41,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 17:37:41,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 17:37:41,234 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 3 states. [2019-01-14 17:37:41,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 17:37:41,306 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2019-01-14 17:37:41,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 17:37:41,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-01-14 17:37:41,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 17:37:41,307 INFO L225 Difference]: With dead ends: 14 [2019-01-14 17:37:41,307 INFO L226 Difference]: Without dead ends: 10 [2019-01-14 17:37:41,309 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 [2019-01-14 17:37:41,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-01-14 17:37:41,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-01-14 17:37:41,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-01-14 17:37:41,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2019-01-14 17:37:41,316 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 5 [2019-01-14 17:37:41,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 17:37:41,317 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-01-14 17:37:41,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 17:37:41,318 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2019-01-14 17:37:41,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-01-14 17:37:41,318 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 17:37:41,318 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 17:37:41,319 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 17:37:41,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 17:37:41,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1133380143, now seen corresponding path program 1 times [2019-01-14 17:37:41,320 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 17:37:41,320 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 17:37:41,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:37:41,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 17:37:41,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:37:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 17:37:41,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 17:37:41,392 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 17:37:41,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 17:37:41,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 17:37:41,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 17:37:41,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 17:37:41,394 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 3 states. [2019-01-14 17:37:41,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 17:37:41,438 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2019-01-14 17:37:41,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 17:37:41,439 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-01-14 17:37:41,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 17:37:41,439 INFO L225 Difference]: With dead ends: 19 [2019-01-14 17:37:41,440 INFO L226 Difference]: Without dead ends: 11 [2019-01-14 17:37:41,440 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 [2019-01-14 17:37:41,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-01-14 17:37:41,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-01-14 17:37:41,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-01-14 17:37:41,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-01-14 17:37:41,449 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 9 [2019-01-14 17:37:41,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 17:37:41,449 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-01-14 17:37:41,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 17:37:41,450 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2019-01-14 17:37:41,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-14 17:37:41,451 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 17:37:41,451 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 17:37:41,451 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 17:37:41,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 17:37:41,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1245368368, now seen corresponding path program 1 times [2019-01-14 17:37:41,454 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 17:37:41,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 17:37:41,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:37:41,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 17:37:41,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:37:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 17:37:41,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-01-14 17:37:41,583 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-14 17:37:41,583 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 17:37:41,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 17:37:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 17:37:41,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 17:37:41,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-01-14 17:37:41,666 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-14 17:37:41,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-01-14 17:37:41,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 17:37:41,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 17:37:41,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-01-14 17:37:41,667 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 4 states. [2019-01-14 17:37:41,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 17:37:41,729 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2019-01-14 17:37:41,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-14 17:37:41,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-01-14 17:37:41,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 17:37:41,731 INFO L225 Difference]: With dead ends: 19 [2019-01-14 17:37:41,731 INFO L226 Difference]: Without dead ends: 15 [2019-01-14 17:37:41,732 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-01-14 17:37:41,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-01-14 17:37:41,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-01-14 17:37:41,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-01-14 17:37:41,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2019-01-14 17:37:41,736 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 10 [2019-01-14 17:37:41,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 17:37:41,739 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-01-14 17:37:41,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 17:37:41,739 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2019-01-14 17:37:41,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-01-14 17:37:41,740 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 17:37:41,741 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-01-14 17:37:41,741 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 17:37:41,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 17:37:41,741 INFO L82 PathProgramCache]: Analyzing trace with hash 265611198, now seen corresponding path program 2 times [2019-01-14 17:37:41,741 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 17:37:41,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 17:37:41,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:37:41,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 17:37:41,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:37:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 17:37:41,863 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 17:37:41,863 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-14 17:37:41,864 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-14 17:37:41,879 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-01-14 17:37:41,893 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-01-14 17:37:41,893 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-01-14 17:37:41,895 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 17:37:41,970 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-01-14 17:37:41,991 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-14 17:37:41,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2019-01-14 17:37:41,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-01-14 17:37:41,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-01-14 17:37:41,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-01-14 17:37:41,993 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand 7 states. [2019-01-14 17:37:42,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 17:37:42,208 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2019-01-14 17:37:42,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-14 17:37:42,209 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-01-14 17:37:42,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 17:37:42,211 INFO L225 Difference]: With dead ends: 27 [2019-01-14 17:37:42,212 INFO L226 Difference]: Without dead ends: 16 [2019-01-14 17:37:42,212 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-01-14 17:37:42,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-01-14 17:37:42,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-01-14 17:37:42,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-01-14 17:37:42,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2019-01-14 17:37:42,218 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 14 [2019-01-14 17:37:42,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 17:37:42,218 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2019-01-14 17:37:42,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-01-14 17:37:42,220 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2019-01-14 17:37:42,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-01-14 17:37:42,221 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 17:37:42,221 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-01-14 17:37:42,222 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 17:37:42,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 17:37:42,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1154356925, now seen corresponding path program 3 times [2019-01-14 17:37:42,222 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 17:37:42,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 17:37:42,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:37:42,225 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-14 17:37:42,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:37:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 17:37:42,304 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-01-14 17:37:42,305 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 17:37:42,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-14 17:37:42,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 17:37:42,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 17:37:42,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-14 17:37:42,306 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand 4 states. [2019-01-14 17:37:42,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 17:37:42,335 INFO L93 Difference]: Finished difference Result 24 states and 32 transitions. [2019-01-14 17:37:42,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-14 17:37:42,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-01-14 17:37:42,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 17:37:42,337 INFO L225 Difference]: With dead ends: 24 [2019-01-14 17:37:42,337 INFO L226 Difference]: Without dead ends: 0 [2019-01-14 17:37:42,338 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-14 17:37:42,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-14 17:37:42,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-14 17:37:42,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-14 17:37:42,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-14 17:37:42,339 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-01-14 17:37:42,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 17:37:42,339 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 17:37:42,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 17:37:42,339 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-14 17:37:42,340 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-14 17:37:42,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-14 17:37:42,577 WARN L181 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 12 [2019-01-14 17:37:42,583 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-01-14 17:37:42,583 INFO L444 ceAbstractionStarter]: At program point L21-2(lines 21 23) the Hoare annotation is: (= ULTIMATE.start_main_~k~0 4) [2019-01-14 17:37:42,583 INFO L444 ceAbstractionStarter]: At program point L21-3(lines 15 24) the Hoare annotation is: (or (and (<= ULTIMATE.start_main_~i~0 0) (<= (+ ULTIMATE.start_main_~j~0 100) ULTIMATE.start_main_~i~0)) (= ULTIMATE.start_main_~k~0 4)) [2019-01-14 17:37:42,584 INFO L444 ceAbstractionStarter]: At program point L17-2(lines 17 19) the Hoare annotation is: (or (<= ULTIMATE.start_main_~i~0 1) (= ULTIMATE.start_main_~k~0 4)) [2019-01-14 17:37:42,584 INFO L448 ceAbstractionStarter]: For program point L17-3(lines 17 19) no Hoare annotation was computed. [2019-01-14 17:37:42,584 INFO L448 ceAbstractionStarter]: For program point L15-2(lines 15 24) no Hoare annotation was computed. [2019-01-14 17:37:42,584 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-01-14 17:37:42,584 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-01-14 17:37:42,584 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-01-14 17:37:42,585 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-01-14 17:37:42,585 INFO L451 ceAbstractionStarter]: At program point L26(lines 10 27) the Hoare annotation is: true [2019-01-14 17:37:42,585 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-01-14 17:37:42,585 INFO L451 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-01-14 17:37:42,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 05:37:42 BoogieIcfgContainer [2019-01-14 17:37:42,599 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 17:37:42,600 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 17:37:42,600 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 17:37:42,600 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 17:37:42,601 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 05:37:40" (3/4) ... [2019-01-14 17:37:42,604 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-14 17:37:42,613 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-01-14 17:37:42,614 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-01-14 17:37:42,656 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 17:37:42,656 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 17:37:42,657 INFO L168 Benchmark]: Toolchain (without parser) took 2448.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 948.7 MB in the beginning and 1.0 GB in the end (delta: -98.5 MB). Peak memory consumption was 46.7 MB. Max. memory is 11.5 GB. [2019-01-14 17:37:42,658 INFO L168 Benchmark]: CDTParser took 0.15 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 17:37:42,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.74 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-14 17:37:42,659 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.42 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 17:37:42,659 INFO L168 Benchmark]: Boogie Preprocessor took 31.46 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 17:37:42,660 INFO L168 Benchmark]: RCFGBuilder took 309.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -185.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-01-14 17:37:42,661 INFO L168 Benchmark]: TraceAbstraction took 1749.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 76.0 MB). Peak memory consumption was 76.0 MB. Max. memory is 11.5 GB. [2019-01-14 17:37:42,661 INFO L168 Benchmark]: Witness Printer took 56.24 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 17:37:42,665 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 259.74 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 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 37.42 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.46 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 309.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -185.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1749.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 76.0 MB). Peak memory consumption was 76.0 MB. Max. memory is 11.5 GB. * Witness Printer took 56.24 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. 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: 17]: Loop Invariant Derived loop invariant: i <= 1 || k == 4 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: (i <= 0 && j + 100 <= i) || k == 4 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: k == 4 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. SAFE Result, 1.6s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 63 SDtfs, 5 SDslu, 63 SDs, 0 SdLazy, 32 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 5 LocationsWithAnnotation, 5 PreInvPairs, 16 NumberOfFragments, 25 HoareAnnotationTreeSize, 5 FomulaSimplifications, 44 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 1608 SizeOfPredicates, 3 NumberOfNonLiveVariables, 59 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 27/32 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...