./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/recursive/recHanoi03_true-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2e94e6aa Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/recursive/recHanoi03_true-unreach-call_true-no-overflow_true-termination.c -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 887ada769b510ae5d273618525924110908f2b5f ............................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2018-12-31 09:52:06,509 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 09:52:06,511 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 09:52:06,524 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 09:52:06,525 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 09:52:06,526 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 09:52:06,527 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 09:52:06,530 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 09:52:06,532 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 09:52:06,532 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 09:52:06,533 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 09:52:06,534 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 09:52:06,535 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 09:52:06,536 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 09:52:06,538 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 09:52:06,538 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 09:52:06,540 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 09:52:06,542 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 09:52:06,544 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 09:52:06,546 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 09:52:06,547 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 09:52:06,549 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 09:52:06,554 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 09:52:06,554 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 09:52:06,555 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 09:52:06,556 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 09:52:06,557 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 09:52:06,558 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 09:52:06,559 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 09:52:06,563 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 09:52:06,563 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 09:52:06,564 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 09:52:06,564 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 09:52:06,564 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 09:52:06,565 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 09:52:06,566 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 09:52:06,566 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 09:52:06,587 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 09:52:06,587 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 09:52:06,588 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 09:52:06,589 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 09:52:06,589 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 09:52:06,589 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 09:52:06,589 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 09:52:06,589 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 09:52:06,589 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 09:52:06,591 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 09:52:06,591 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 09:52:06,591 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 09:52:06,591 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 09:52:06,591 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 09:52:06,591 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 09:52:06,592 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 09:52:06,592 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 09:52:06,593 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 09:52:06,593 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 09:52:06,593 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 09:52:06,593 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 09:52:06,593 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 09:52:06,594 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 09:52:06,594 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 09:52:06,594 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 09:52:06,594 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 09:52:06,594 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 09:52:06,594 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 09:52:06,595 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 -> 887ada769b510ae5d273618525924110908f2b5f [2018-12-31 09:52:06,634 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 09:52:06,653 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 09:52:06,659 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 09:52:06,662 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 09:52:06,662 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 09:52:06,663 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/recursive/recHanoi03_true-unreach-call_true-no-overflow_true-termination.c [2018-12-31 09:52:06,717 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/042c5463d/a804d9cd6b9d4c618fcdfab675e6236e/FLAG129949166 [2018-12-31 09:52:07,118 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 09:52:07,118 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/recursive/recHanoi03_true-unreach-call_true-no-overflow_true-termination.c [2018-12-31 09:52:07,125 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/042c5463d/a804d9cd6b9d4c618fcdfab675e6236e/FLAG129949166 [2018-12-31 09:52:07,506 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/042c5463d/a804d9cd6b9d4c618fcdfab675e6236e [2018-12-31 09:52:07,512 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 09:52:07,514 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 09:52:07,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 09:52:07,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 09:52:07,519 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 09:52:07,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 09:52:07" (1/1) ... [2018-12-31 09:52:07,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52a975e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 09:52:07, skipping insertion in model container [2018-12-31 09:52:07,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 09:52:07" (1/1) ... [2018-12-31 09:52:07,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 09:52:07,552 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 09:52:07,778 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 09:52:07,785 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 09:52:07,811 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 09:52:07,829 INFO L195 MainTranslator]: Completed translation [2018-12-31 09:52:07,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 09:52:07 WrapperNode [2018-12-31 09:52:07,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 09:52:07,832 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 09:52:07,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 09:52:07,833 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 09:52:07,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 09:52:07" (1/1) ... [2018-12-31 09:52:07,850 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 09:52:07" (1/1) ... [2018-12-31 09:52:07,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 09:52:07,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 09:52:07,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 09:52:07,876 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 09:52:07,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 09:52:07" (1/1) ... [2018-12-31 09:52:07,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 09:52:07" (1/1) ... [2018-12-31 09:52:07,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 09:52:07" (1/1) ... [2018-12-31 09:52:07,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 09:52:07" (1/1) ... [2018-12-31 09:52:07,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 09:52:07" (1/1) ... [2018-12-31 09:52:07,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 09:52:07" (1/1) ... [2018-12-31 09:52:07,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 09:52:07" (1/1) ... [2018-12-31 09:52:07,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 09:52:07,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 09:52:07,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 09:52:07,893 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 09:52:07,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 09:52:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 09:52:08,014 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2018-12-31 09:52:08,014 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2018-12-31 09:52:08,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 09:52:08,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 09:52:08,214 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 09:52:08,214 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-31 09:52:08,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 09:52:08 BoogieIcfgContainer [2018-12-31 09:52:08,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 09:52:08,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 09:52:08,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 09:52:08,220 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 09:52:08,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 09:52:07" (1/3) ... [2018-12-31 09:52:08,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3c5086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 09:52:08, skipping insertion in model container [2018-12-31 09:52:08,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 09:52:07" (2/3) ... [2018-12-31 09:52:08,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3c5086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 09:52:08, skipping insertion in model container [2018-12-31 09:52:08,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 09:52:08" (3/3) ... [2018-12-31 09:52:08,224 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi03_true-unreach-call_true-no-overflow_true-termination.c [2018-12-31 09:52:08,232 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 09:52:08,239 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 09:52:08,255 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 09:52:08,287 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 09:52:08,288 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 09:52:08,288 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 09:52:08,288 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 09:52:08,288 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 09:52:08,289 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 09:52:08,289 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 09:52:08,289 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 09:52:08,289 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 09:52:08,308 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2018-12-31 09:52:08,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-31 09:52:08,315 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 09:52:08,316 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 09:52:08,319 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 09:52:08,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 09:52:08,325 INFO L82 PathProgramCache]: Analyzing trace with hash 2032829855, now seen corresponding path program 1 times [2018-12-31 09:52:08,328 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 09:52:08,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 09:52:08,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:52:08,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 09:52:08,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:52:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 09:52:08,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 09:52:08,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 09:52:08,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-31 09:52:08,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-31 09:52:08,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-31 09:52:08,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-31 09:52:08,730 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 6 states. [2018-12-31 09:52:08,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 09:52:08,903 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2018-12-31 09:52:08,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-31 09:52:08,906 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-12-31 09:52:08,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 09:52:08,915 INFO L225 Difference]: With dead ends: 28 [2018-12-31 09:52:08,915 INFO L226 Difference]: Without dead ends: 15 [2018-12-31 09:52:08,919 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-12-31 09:52:08,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-12-31 09:52:08,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-12-31 09:52:08,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-31 09:52:08,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-12-31 09:52:08,960 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2018-12-31 09:52:08,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 09:52:08,960 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-12-31 09:52:08,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-31 09:52:08,961 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-12-31 09:52:08,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-31 09:52:08,962 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 09:52:08,963 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 09:52:08,963 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 09:52:08,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 09:52:08,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1521841779, now seen corresponding path program 1 times [2018-12-31 09:52:08,964 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 09:52:08,964 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 09:52:08,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:52:08,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 09:52:08,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:52:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 09:52:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-31 09:52:09,246 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 09:52:09,246 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 09:52:09,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 09:52:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 09:52:09,322 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 09:52:09,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-31 09:52:09,885 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 09:52:09,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-12-31 09:52:09,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-31 09:52:09,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-31 09:52:09,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2018-12-31 09:52:09,888 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-12-31 09:52:10,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 09:52:10,276 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-12-31 09:52:10,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-31 09:52:10,277 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2018-12-31 09:52:10,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 09:52:10,278 INFO L225 Difference]: With dead ends: 27 [2018-12-31 09:52:10,278 INFO L226 Difference]: Without dead ends: 21 [2018-12-31 09:52:10,281 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2018-12-31 09:52:10,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-12-31 09:52:10,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-12-31 09:52:10,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-12-31 09:52:10,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-12-31 09:52:10,288 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 16 [2018-12-31 09:52:10,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 09:52:10,289 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-12-31 09:52:10,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-31 09:52:10,289 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-12-31 09:52:10,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-31 09:52:10,292 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 09:52:10,293 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 09:52:10,293 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 09:52:10,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 09:52:10,294 INFO L82 PathProgramCache]: Analyzing trace with hash -88960435, now seen corresponding path program 2 times [2018-12-31 09:52:10,294 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 09:52:10,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 09:52:10,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:52:10,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 09:52:10,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:52:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 09:52:10,785 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-12-31 09:52:10,785 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 09:52:10,786 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 [2018-12-31 09:52:10,800 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-31 09:52:10,819 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-31 09:52:10,820 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 09:52:10,825 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 09:52:11,303 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-12-31 09:52:11,331 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 09:52:11,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-12-31 09:52:11,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-12-31 09:52:11,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-12-31 09:52:11,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2018-12-31 09:52:11,333 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 21 states. [2018-12-31 09:52:12,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 09:52:12,027 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2018-12-31 09:52:12,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-31 09:52:12,028 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 28 [2018-12-31 09:52:12,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 09:52:12,030 INFO L225 Difference]: With dead ends: 39 [2018-12-31 09:52:12,031 INFO L226 Difference]: Without dead ends: 33 [2018-12-31 09:52:12,032 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2018-12-31 09:52:12,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-31 09:52:12,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-31 09:52:12,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-31 09:52:12,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-12-31 09:52:12,041 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 28 [2018-12-31 09:52:12,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 09:52:12,041 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-12-31 09:52:12,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-12-31 09:52:12,041 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-12-31 09:52:12,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-12-31 09:52:12,043 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 09:52:12,044 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 09:52:12,044 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 09:52:12,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 09:52:12,044 INFO L82 PathProgramCache]: Analyzing trace with hash 608531405, now seen corresponding path program 3 times [2018-12-31 09:52:12,045 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 09:52:12,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 09:52:12,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:52:12,046 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 09:52:12,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:52:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 09:52:12,619 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-12-31 09:52:12,619 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 09:52:12,619 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 09:52:12,629 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-31 09:52:12,653 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-12-31 09:52:12,653 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 09:52:12,657 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 09:52:23,545 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 69 proven. 0 refuted. 8 times theorem prover too weak. 77 trivial. 0 not checked. [2018-12-31 09:52:23,574 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 09:52:23,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2018-12-31 09:52:23,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-12-31 09:52:23,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-12-31 09:52:23,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1281, Unknown=6, NotChecked=0, Total=1406 [2018-12-31 09:52:23,577 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 38 states. [2018-12-31 09:52:30,970 WARN L181 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 35 [2018-12-31 09:52:36,003 WARN L181 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2018-12-31 09:52:38,332 WARN L181 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2018-12-31 09:52:42,062 WARN L181 SmtUtils]: Spent 3.59 s on a formula simplification. DAG size of input: 79 DAG size of output: 41 [2018-12-31 09:52:44,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 09:52:44,892 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-12-31 09:52:44,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-12-31 09:52:44,892 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 52 [2018-12-31 09:52:44,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 09:52:44,895 INFO L225 Difference]: With dead ends: 33 [2018-12-31 09:52:44,895 INFO L226 Difference]: Without dead ends: 0 [2018-12-31 09:52:44,898 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=351, Invalid=2611, Unknown=8, NotChecked=0, Total=2970 [2018-12-31 09:52:44,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-31 09:52:44,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-31 09:52:44,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-31 09:52:44,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-31 09:52:44,899 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2018-12-31 09:52:44,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 09:52:44,900 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-31 09:52:44,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-12-31 09:52:44,900 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-31 09:52:44,900 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-31 09:52:44,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-31 09:52:44,938 INFO L448 ceAbstractionStarter]: For program point L17(lines 17 19) no Hoare annotation was computed. [2018-12-31 09:52:44,938 INFO L448 ceAbstractionStarter]: For program point hanoiEXIT(lines 16 21) no Hoare annotation was computed. [2018-12-31 09:52:44,939 INFO L451 ceAbstractionStarter]: At program point hanoiENTRY(lines 16 21) the Hoare annotation is: true [2018-12-31 09:52:44,939 INFO L448 ceAbstractionStarter]: For program point hanoiFINAL(lines 16 21) no Hoare annotation was computed. [2018-12-31 09:52:44,939 INFO L444 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (<= |hanoi_#in~n| hanoi_~n) [2018-12-31 09:52:44,939 INFO L448 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-12-31 09:52:44,939 INFO L448 ceAbstractionStarter]: For program point L33(line 33) no Hoare annotation was computed. [2018-12-31 09:52:44,939 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-31 09:52:44,939 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 33) no Hoare annotation was computed. [2018-12-31 09:52:44,940 INFO L448 ceAbstractionStarter]: For program point L30(lines 30 34) no Hoare annotation was computed. [2018-12-31 09:52:44,940 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-12-31 09:52:44,940 INFO L444 ceAbstractionStarter]: At program point L29(line 29) the Hoare annotation is: (<= ULTIMATE.start_main_~n~0 31) [2018-12-31 09:52:44,940 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-31 09:52:44,940 INFO L448 ceAbstractionStarter]: For program point L29-1(line 29) no Hoare annotation was computed. [2018-12-31 09:52:44,940 INFO L448 ceAbstractionStarter]: For program point L26(lines 26 28) no Hoare annotation was computed. [2018-12-31 09:52:44,940 INFO L451 ceAbstractionStarter]: At program point L24(lines 24 35) the Hoare annotation is: true [2018-12-31 09:52:44,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 09:52:44 BoogieIcfgContainer [2018-12-31 09:52:44,946 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 09:52:44,946 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 09:52:44,946 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 09:52:44,947 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 09:52:44,947 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 09:52:08" (3/4) ... [2018-12-31 09:52:44,950 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-31 09:52:44,956 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure hanoi [2018-12-31 09:52:44,961 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-31 09:52:44,961 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-31 09:52:45,017 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 09:52:45,017 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 09:52:45,018 INFO L168 Benchmark]: Toolchain (without parser) took 37505.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 184.0 MB). Free memory was 951.3 MB in the beginning and 926.7 MB in the end (delta: 24.7 MB). Peak memory consumption was 208.7 MB. Max. memory is 11.5 GB. [2018-12-31 09:52:45,019 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 09:52:45,020 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.84 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-31 09:52:45,020 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.37 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 09:52:45,021 INFO L168 Benchmark]: Boogie Preprocessor took 15.93 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 09:52:45,021 INFO L168 Benchmark]: RCFGBuilder took 322.30 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.2 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -146.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2018-12-31 09:52:45,022 INFO L168 Benchmark]: TraceAbstraction took 36730.46 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 934.4 MB in the end (delta: 152.5 MB). Peak memory consumption was 224.3 MB. Max. memory is 11.5 GB. [2018-12-31 09:52:45,023 INFO L168 Benchmark]: Witness Printer took 71.11 ms. Allocated memory is still 1.2 GB. Free memory was 934.4 MB in the beginning and 926.7 MB in the end (delta: 7.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 11.5 GB. [2018-12-31 09:52:45,027 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 316.84 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.37 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.93 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 322.30 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.2 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -146.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 36730.46 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 934.4 MB in the end (delta: 152.5 MB). Peak memory consumption was 224.3 MB. Max. memory is 11.5 GB. * Witness Printer took 71.11 ms. Allocated memory is still 1.2 GB. Free memory was 934.4 MB in the beginning and 926.7 MB in the end (delta: 7.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 33]: 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: 24]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. SAFE Result, 36.6s OverallTime, 4 OverallIterations, 8 TraceHistogramMax, 22.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 47 SDtfs, 26 SDslu, 382 SDs, 0 SdLazy, 776 SolverSat, 17 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 10.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 186 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 24.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=3, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 6 PreInvPairs, 8 NumberOfFragments, 8 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 13.4s InterpolantComputationTime, 202 NumberOfCodeBlocks, 202 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 195 ConstructedInterpolants, 36 QuantifiedInterpolants, 64935 SizeOfPredicates, 12 NumberOfNonLiveVariables, 235 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 257/376 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...