./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 91b1670e 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 0.1.24-91b1670 [2018-11-28 18:50:05,936 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:50:05,938 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:50:05,950 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:50:05,951 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:50:05,952 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:50:05,953 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:50:05,955 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:50:05,957 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:50:05,958 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:50:05,959 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:50:05,959 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:50:05,961 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:50:05,962 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:50:05,963 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:50:05,964 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:50:05,965 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:50:05,967 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:50:05,969 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:50:05,971 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:50:05,973 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:50:05,974 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:50:05,978 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:50:05,978 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:50:05,978 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:50:05,979 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:50:05,980 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:50:05,981 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:50:05,982 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:50:05,983 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:50:05,984 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:50:05,984 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:50:05,985 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:50:05,985 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:50:05,986 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:50:05,987 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:50:05,987 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:50:06,003 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:50:06,004 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:50:06,005 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:50:06,005 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:50:06,006 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:50:06,006 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:50:06,006 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:50:06,006 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:50:06,007 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:50:06,007 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:50:06,007 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:50:06,007 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:50:06,007 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:50:06,008 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:50:06,008 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:50:06,008 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:50:06,008 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:50:06,008 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:50:06,009 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:50:06,009 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:50:06,009 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:50:06,009 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:50:06,009 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:50:06,010 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:50:06,010 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:50:06,010 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:50:06,010 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:50:06,010 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:50:06,011 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:50:06,011 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:50:06,011 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 [2018-11-28 18:50:06,062 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:50:06,076 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:50:06,080 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:50:06,082 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:50:06,082 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:50:06,083 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/recursive/recHanoi03_true-unreach-call_true-no-overflow_true-termination.c [2018-11-28 18:50:06,146 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/768d2c03c/eff66dfd882e47178b97520351197364/FLAG585e8dbdb [2018-11-28 18:50:06,578 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:50:06,579 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/recursive/recHanoi03_true-unreach-call_true-no-overflow_true-termination.c [2018-11-28 18:50:06,586 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/768d2c03c/eff66dfd882e47178b97520351197364/FLAG585e8dbdb [2018-11-28 18:50:06,946 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/768d2c03c/eff66dfd882e47178b97520351197364 [2018-11-28 18:50:06,950 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:50:06,952 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:50:06,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:50:06,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:50:06,959 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:50:06,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:50:06" (1/1) ... [2018-11-28 18:50:06,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd9eddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:50:06, skipping insertion in model container [2018-11-28 18:50:06,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:50:06" (1/1) ... [2018-11-28 18:50:06,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:50:06,991 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:50:07,212 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:50:07,218 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:50:07,240 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:50:07,257 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:50:07,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:50:07 WrapperNode [2018-11-28 18:50:07,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:50:07,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:50:07,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:50:07,260 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:50:07,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:50:07" (1/1) ... [2018-11-28 18:50:07,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:50:07" (1/1) ... [2018-11-28 18:50:07,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:50:07,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:50:07,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:50:07,289 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:50:07,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:50:07" (1/1) ... [2018-11-28 18:50:07,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:50:07" (1/1) ... [2018-11-28 18:50:07,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:50:07" (1/1) ... [2018-11-28 18:50:07,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:50:07" (1/1) ... [2018-11-28 18:50:07,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:50:07" (1/1) ... [2018-11-28 18:50:07,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:50:07" (1/1) ... [2018-11-28 18:50:07,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:50:07" (1/1) ... [2018-11-28 18:50:07,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:50:07,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:50:07,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:50:07,316 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:50:07,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:50:07" (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 [2018-11-28 18:50:07,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:50:07,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:50:07,452 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2018-11-28 18:50:07,453 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2018-11-28 18:50:07,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:50:07,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:50:07,453 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:50:07,453 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:50:07,689 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:50:07,690 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 18:50:07,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:50:07 BoogieIcfgContainer [2018-11-28 18:50:07,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:50:07,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:50:07,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:50:07,695 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:50:07,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:50:06" (1/3) ... [2018-11-28 18:50:07,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b78bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:50:07, skipping insertion in model container [2018-11-28 18:50:07,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:50:07" (2/3) ... [2018-11-28 18:50:07,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b78bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:50:07, skipping insertion in model container [2018-11-28 18:50:07,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:50:07" (3/3) ... [2018-11-28 18:50:07,698 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi03_true-unreach-call_true-no-overflow_true-termination.c [2018-11-28 18:50:07,709 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:50:07,717 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:50:07,743 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:50:07,814 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:50:07,817 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:50:07,822 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:50:07,822 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:50:07,822 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:50:07,822 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:50:07,822 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:50:07,822 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:50:07,823 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:50:07,863 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-28 18:50:07,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 18:50:07,871 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:50:07,872 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:50:07,874 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:50:07,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:50:07,880 INFO L82 PathProgramCache]: Analyzing trace with hash 913793727, now seen corresponding path program 1 times [2018-11-28 18:50:07,882 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:50:07,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:50:07,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:50:07,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:50:07,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:50:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:50:08,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:50:08,128 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:50:08,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 18:50:08,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 18:50:08,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 18:50:08,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 18:50:08,150 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 6 states. [2018-11-28 18:50:08,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:50:08,346 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-28 18:50:08,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 18:50:08,348 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-11-28 18:50:08,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:50:08,360 INFO L225 Difference]: With dead ends: 33 [2018-11-28 18:50:08,360 INFO L226 Difference]: Without dead ends: 19 [2018-11-28 18:50:08,364 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:50:08,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-28 18:50:08,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-28 18:50:08,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-28 18:50:08,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-11-28 18:50:08,407 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2018-11-28 18:50:08,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:50:08,407 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-11-28 18:50:08,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 18:50:08,408 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-11-28 18:50:08,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 18:50:08,409 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:50:08,410 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:50:08,410 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:50:08,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:50:08,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1998834103, now seen corresponding path program 1 times [2018-11-28 18:50:08,411 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:50:08,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:50:08,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:50:08,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:50:08,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:50:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:50:08,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 18:50:08,881 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:50:08,882 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 [2018-11-28 18:50:08,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:50:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:50:08,922 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:50:09,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 18:50:09,352 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:50:09,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2018-11-28 18:50:09,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-28 18:50:09,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-28 18:50:09,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-11-28 18:50:09,355 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 14 states. [2018-11-28 18:50:09,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:50:09,711 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-11-28 18:50:09,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 18:50:09,712 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 20 [2018-11-28 18:50:09,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:50:09,713 INFO L225 Difference]: With dead ends: 26 [2018-11-28 18:50:09,713 INFO L226 Difference]: Without dead ends: 22 [2018-11-28 18:50:09,719 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2018-11-28 18:50:09,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-28 18:50:09,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-11-28 18:50:09,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-28 18:50:09,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-11-28 18:50:09,737 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 20 [2018-11-28 18:50:09,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:50:09,739 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-11-28 18:50:09,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-28 18:50:09,740 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-11-28 18:50:09,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 18:50:09,741 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:50:09,741 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:50:09,743 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:50:09,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:50:09,743 INFO L82 PathProgramCache]: Analyzing trace with hash 293522751, now seen corresponding path program 2 times [2018-11-28 18:50:09,745 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:50:09,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:50:09,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:50:09,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:50:09,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:50:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:50:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-28 18:50:10,240 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:50:10,240 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 [2018-11-28 18:50:10,256 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 18:50:10,306 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 18:50:10,306 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 18:50:10,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:50:10,702 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-28 18:50:10,729 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:50:10,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2018-11-28 18:50:10,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-28 18:50:10,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-28 18:50:10,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2018-11-28 18:50:10,731 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 18 states. [2018-11-28 18:50:11,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:50:11,125 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2018-11-28 18:50:11,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-28 18:50:11,126 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 26 [2018-11-28 18:50:11,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:50:11,128 INFO L225 Difference]: With dead ends: 34 [2018-11-28 18:50:11,128 INFO L226 Difference]: Without dead ends: 28 [2018-11-28 18:50:11,129 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2018-11-28 18:50:11,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-28 18:50:11,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-11-28 18:50:11,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-28 18:50:11,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-11-28 18:50:11,137 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 26 [2018-11-28 18:50:11,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:50:11,138 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-11-28 18:50:11,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-28 18:50:11,138 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-11-28 18:50:11,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-28 18:50:11,140 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:50:11,140 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:50:11,140 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:50:11,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:50:11,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1152432193, now seen corresponding path program 3 times [2018-11-28 18:50:11,141 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:50:11,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:50:11,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:50:11,142 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 18:50:11,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:50:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:50:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-28 18:50:11,431 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:50:11,431 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 [2018-11-28 18:50:11,440 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 18:50:11,464 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-11-28 18:50:11,464 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 18:50:11,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:50:12,453 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-11-28 18:50:12,473 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 18:50:12,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [15] total 27 [2018-11-28 18:50:12,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-28 18:50:12,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-28 18:50:12,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=629, Unknown=1, NotChecked=0, Total=702 [2018-11-28 18:50:12,475 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 27 states. [2018-11-28 18:50:13,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:50:13,095 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-11-28 18:50:13,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-28 18:50:13,096 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 38 [2018-11-28 18:50:13,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:50:13,097 INFO L225 Difference]: With dead ends: 28 [2018-11-28 18:50:13,097 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 18:50:13,098 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=170, Invalid=1235, Unknown=1, NotChecked=0, Total=1406 [2018-11-28 18:50:13,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 18:50:13,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 18:50:13,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 18:50:13,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 18:50:13,099 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2018-11-28 18:50:13,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:50:13,100 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 18:50:13,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-11-28 18:50:13,100 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 18:50:13,100 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 18:50:13,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 18:50:13,170 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 18:50:13,170 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:50:13,170 INFO L448 ceAbstractionStarter]: For program point L17(lines 17 19) no Hoare annotation was computed. [2018-11-28 18:50:13,171 INFO L448 ceAbstractionStarter]: For program point hanoiEXIT(lines 16 21) no Hoare annotation was computed. [2018-11-28 18:50:13,171 INFO L451 ceAbstractionStarter]: At program point hanoiENTRY(lines 16 21) the Hoare annotation is: true [2018-11-28 18:50:13,171 INFO L448 ceAbstractionStarter]: For program point hanoiFINAL(lines 16 21) no Hoare annotation was computed. [2018-11-28 18:50:13,171 INFO L444 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (= hanoi_~n |hanoi_#in~n|) [2018-11-28 18:50:13,171 INFO L448 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-11-28 18:50:13,171 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:50:13,171 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 18:50:13,171 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:50:13,172 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:50:13,172 INFO L448 ceAbstractionStarter]: For program point L33(line 33) no Hoare annotation was computed. [2018-11-28 18:50:13,172 INFO L448 ceAbstractionStarter]: For program point L30(lines 30 34) no Hoare annotation was computed. [2018-11-28 18:50:13,172 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 24 35) the Hoare annotation is: true [2018-11-28 18:50:13,172 INFO L444 ceAbstractionStarter]: At program point L29(line 29) the Hoare annotation is: (<= main_~n~0 31) [2018-11-28 18:50:13,172 INFO L448 ceAbstractionStarter]: For program point L29-1(line 29) no Hoare annotation was computed. [2018-11-28 18:50:13,172 INFO L448 ceAbstractionStarter]: For program point L26(lines 26 28) no Hoare annotation was computed. [2018-11-28 18:50:13,172 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 24 35) no Hoare annotation was computed. [2018-11-28 18:50:13,173 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 33) no Hoare annotation was computed. [2018-11-28 18:50:13,173 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 24 35) no Hoare annotation was computed. [2018-11-28 18:50:13,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:50:13 BoogieIcfgContainer [2018-11-28 18:50:13,176 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:50:13,176 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:50:13,176 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:50:13,177 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:50:13,177 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:50:07" (3/4) ... [2018-11-28 18:50:13,180 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 18:50:13,186 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 18:50:13,187 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure hanoi [2018-11-28 18:50:13,187 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 18:50:13,191 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-28 18:50:13,192 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-28 18:50:13,192 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 18:50:13,240 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:50:13,241 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:50:13,241 INFO L168 Benchmark]: Toolchain (without parser) took 6290.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 201.9 MB). Free memory was 951.3 MB in the beginning and 1.2 GB in the end (delta: -224.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:50:13,243 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. [2018-11-28 18:50:13,244 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.47 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. [2018-11-28 18:50:13,244 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.25 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. [2018-11-28 18:50:13,245 INFO L168 Benchmark]: Boogie Preprocessor took 25.26 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. [2018-11-28 18:50:13,245 INFO L168 Benchmark]: RCFGBuilder took 375.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -183.4 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-11-28 18:50:13,246 INFO L168 Benchmark]: TraceAbstraction took 5484.75 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 57.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -55.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. [2018-11-28 18:50:13,247 INFO L168 Benchmark]: Witness Printer took 64.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 11.5 GB. [2018-11-28 18:50:13,252 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 305.47 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 29.25 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 25.26 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 375.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -183.4 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5484.75 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 57.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -55.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. * Witness Printer took 64.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 5.3s OverallTime, 4 OverallIterations, 5 TraceHistogramMax, 1.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 60 SDtfs, 22 SDslu, 443 SDs, 0 SdLazy, 509 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 11 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 182 NumberOfCodeBlocks, 182 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 175 ConstructedInterpolants, 24 QuantifiedInterpolants, 28184 SizeOfPredicates, 11 NumberOfNonLiveVariables, 203 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 85/140 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...