./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loops/terminator_03_true-unreach-call_true-termination.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/loops/terminator_03_true-unreach-call_true-termination.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 a269e8b2c2a55ee83f0497e8cbfb0a6499d0714f ................................................................................................................................................................................................................................................................................................ 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 10:52:07,187 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 10:52:07,189 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 10:52:07,200 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-12 10:52:07,201 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-12 10:52:07,202 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-12 10:52:07,203 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-12 10:52:07,205 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-12 10:52:07,207 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-12 10:52:07,208 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-12 10:52:07,209 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-12 10:52:07,209 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-12 10:52:07,210 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-12 10:52:07,211 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-12 10:52:07,212 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-12 10:52:07,213 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-12 10:52:07,214 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-12 10:52:07,216 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-12 10:52:07,218 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-12 10:52:07,220 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-12 10:52:07,221 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-12 10:52:07,222 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-12 10:52:07,225 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-12 10:52:07,225 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 10:52:07,225 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 10:52:07,226 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 10:52:07,227 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 10:52:07,228 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 10:52:07,229 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 10:52:07,230 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 10:52:07,235 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 10:52:07,236 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 10:52:07,236 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 10:52:07,236 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 10:52:07,237 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 10:52:07,241 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 10:52:07,241 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-12 10:52:07,271 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 10:52:07,272 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 10:52:07,273 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 10:52:07,274 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 10:52:07,274 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 10:52:07,275 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 10:52:07,275 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 10:52:07,275 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-12 10:52:07,275 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 10:52:07,275 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 10:52:07,275 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 10:52:07,276 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 10:52:07,276 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 10:52:07,276 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 10:52:07,276 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 10:52:07,276 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 10:52:07,276 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 10:52:07,277 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 10:52:07,278 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 10:52:07,278 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 10:52:07,278 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 10:52:07,278 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 10:52:07,278 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 10:52:07,278 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 10:52:07,279 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 10:52:07,279 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-12 10:52:07,279 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 10:52:07,279 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-12 10:52:07,280 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 -> a269e8b2c2a55ee83f0497e8cbfb0a6499d0714f [2019-01-12 10:52:07,320 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 10:52:07,333 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 10:52:07,336 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 10:52:07,337 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 10:52:07,338 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 10:52:07,339 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loops/terminator_03_true-unreach-call_true-termination.i [2019-01-12 10:52:07,398 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c646e374/ede12bfc9a884204ac62eb9446ab402e/FLAG45b6dfe12 [2019-01-12 10:52:07,817 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 10:52:07,818 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loops/terminator_03_true-unreach-call_true-termination.i [2019-01-12 10:52:07,823 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c646e374/ede12bfc9a884204ac62eb9446ab402e/FLAG45b6dfe12 [2019-01-12 10:52:08,202 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c646e374/ede12bfc9a884204ac62eb9446ab402e [2019-01-12 10:52:08,205 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 10:52:08,207 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 10:52:08,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 10:52:08,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 10:52:08,211 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 10:52:08,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 10:52:08" (1/1) ... [2019-01-12 10:52:08,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38fc82f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:08, skipping insertion in model container [2019-01-12 10:52:08,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 10:52:08" (1/1) ... [2019-01-12 10:52:08,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 10:52:08,240 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 10:52:08,448 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 10:52:08,453 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 10:52:08,471 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 10:52:08,490 INFO L195 MainTranslator]: Completed translation [2019-01-12 10:52:08,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:08 WrapperNode [2019-01-12 10:52:08,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 10:52:08,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 10:52:08,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 10:52:08,493 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 10:52:08,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:08" (1/1) ... [2019-01-12 10:52:08,507 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:08" (1/1) ... [2019-01-12 10:52:08,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 10:52:08,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 10:52:08,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 10:52:08,529 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 10:52:08,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:08" (1/1) ... [2019-01-12 10:52:08,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:08" (1/1) ... [2019-01-12 10:52:08,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:08" (1/1) ... [2019-01-12 10:52:08,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:08" (1/1) ... [2019-01-12 10:52:08,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:08" (1/1) ... [2019-01-12 10:52:08,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:08" (1/1) ... [2019-01-12 10:52:08,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:08" (1/1) ... [2019-01-12 10:52:08,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 10:52:08,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 10:52:08,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 10:52:08,552 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 10:52:08,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:08" (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 10:52:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 10:52:08,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 10:52:08,875 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 10:52:08,875 INFO L286 CfgBuilder]: Removed 7 assue(true) statements. [2019-01-12 10:52:08,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 10:52:08 BoogieIcfgContainer [2019-01-12 10:52:08,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 10:52:08,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 10:52:08,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 10:52:08,881 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 10:52:08,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 10:52:08" (1/3) ... [2019-01-12 10:52:08,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aaea2b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 10:52:08, skipping insertion in model container [2019-01-12 10:52:08,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:08" (2/3) ... [2019-01-12 10:52:08,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aaea2b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 10:52:08, skipping insertion in model container [2019-01-12 10:52:08,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 10:52:08" (3/3) ... [2019-01-12 10:52:08,884 INFO L112 eAbstractionObserver]: Analyzing ICFG terminator_03_true-unreach-call_true-termination.i [2019-01-12 10:52:08,894 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 10:52:08,902 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-12 10:52:08,919 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-12 10:52:08,951 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 10:52:08,952 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 10:52:08,952 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 10:52:08,952 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 10:52:08,952 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 10:52:08,952 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 10:52:08,953 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 10:52:08,953 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 10:52:08,954 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 10:52:08,969 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-01-12 10:52:08,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-01-12 10:52:08,976 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 10:52:08,977 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-01-12 10:52:08,979 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 10:52:08,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 10:52:08,985 INFO L82 PathProgramCache]: Analyzing trace with hash 922384074, now seen corresponding path program 1 times [2019-01-12 10:52:08,986 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 10:52:08,987 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 10:52:09,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 10:52:09,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 10:52:09,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 10:52:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 10:52:09,248 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 10:52:09,251 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 10:52:09,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-12 10:52:09,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-12 10:52:09,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-12 10:52:09,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-12 10:52:09,275 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2019-01-12 10:52:09,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 10:52:09,402 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2019-01-12 10:52:09,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 10:52:09,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-01-12 10:52:09,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 10:52:09,414 INFO L225 Difference]: With dead ends: 26 [2019-01-12 10:52:09,415 INFO L226 Difference]: Without dead ends: 8 [2019-01-12 10:52:09,418 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-12 10:52:09,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-01-12 10:52:09,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-01-12 10:52:09,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-01-12 10:52:09,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-01-12 10:52:09,453 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-01-12 10:52:09,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 10:52:09,454 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-01-12 10:52:09,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-12 10:52:09,454 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-01-12 10:52:09,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-01-12 10:52:09,455 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 10:52:09,455 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-01-12 10:52:09,455 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 10:52:09,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 10:52:09,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1484065106, now seen corresponding path program 1 times [2019-01-12 10:52:09,456 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 10:52:09,456 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 10:52:09,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 10:52:09,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 10:52:09,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 10:52:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 10:52:09,726 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 10:52:09,726 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 10:52:09,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-12 10:52:09,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-12 10:52:09,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-12 10:52:09,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-01-12 10:52:09,730 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2019-01-12 10:52:09,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 10:52:09,786 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-01-12 10:52:09,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-12 10:52:09,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-01-12 10:52:09,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 10:52:09,787 INFO L225 Difference]: With dead ends: 8 [2019-01-12 10:52:09,787 INFO L226 Difference]: Without dead ends: 0 [2019-01-12 10:52:09,788 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-01-12 10:52:09,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-12 10:52:09,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-12 10:52:09,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-12 10:52:09,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-12 10:52:09,789 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-01-12 10:52:09,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 10:52:09,790 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-12 10:52:09,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-12 10:52:09,790 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-12 10:52:09,790 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-12 10:52:09,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-12 10:52:09,836 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-01-12 10:52:09,837 INFO L451 ceAbstractionStarter]: At program point L21(lines 11 22) the Hoare annotation is: true [2019-01-12 10:52:09,837 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-01-12 10:52:09,837 INFO L448 ceAbstractionStarter]: For program point L15(lines 15 19) no Hoare annotation was computed. [2019-01-12 10:52:09,837 INFO L448 ceAbstractionStarter]: For program point L15-1(lines 15 19) no Hoare annotation was computed. [2019-01-12 10:52:09,838 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-01-12 10:52:09,838 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-01-12 10:52:09,838 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-01-12 10:52:09,838 INFO L448 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-01-12 10:52:09,838 INFO L444 ceAbstractionStarter]: At program point L16-2(lines 16 18) the Hoare annotation is: (< 0 ULTIMATE.start_main_~y~0) [2019-01-12 10:52:09,838 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-01-12 10:52:09,838 INFO L451 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-01-12 10:52:09,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 10:52:09 BoogieIcfgContainer [2019-01-12 10:52:09,853 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 10:52:09,854 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 10:52:09,854 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 10:52:09,854 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 10:52:09,855 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 10:52:08" (3/4) ... [2019-01-12 10:52:09,859 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-12 10:52:09,870 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-01-12 10:52:09,870 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-01-12 10:52:09,919 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-12 10:52:09,919 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 10:52:09,920 INFO L168 Benchmark]: Toolchain (without parser) took 1713.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -141.5 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-01-12 10:52:09,921 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 10:52:09,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.13 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-12 10:52:09,923 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.19 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 10:52:09,923 INFO L168 Benchmark]: Boogie Preprocessor took 22.65 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 10:52:09,923 INFO L168 Benchmark]: RCFGBuilder took 325.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -184.9 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-01-12 10:52:09,927 INFO L168 Benchmark]: TraceAbstraction took 975.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2019-01-12 10:52:09,927 INFO L168 Benchmark]: Witness Printer took 65.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-01-12 10:52:09,936 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 283.13 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.19 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.65 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 325.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -184.9 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 975.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * Witness Printer took 65.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 < y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 18 SDtfs, 13 SDslu, 22 SDs, 0 SdLazy, 18 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 5 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 141 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...