./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/cggmp2005_true-unreach-call_true-termination.c.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_6bec9789-fdb1-4213-8635-73502815f763/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6bec9789-fdb1-4213-8635-73502815f763/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6bec9789-fdb1-4213-8635-73502815f763/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6bec9789-fdb1-4213-8635-73502815f763/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/cggmp2005_true-unreach-call_true-termination.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_6bec9789-fdb1-4213-8635-73502815f763/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6bec9789-fdb1-4213-8635-73502815f763/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ee0c0bb9185005ad94b7785b09df595a41ce360 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 08:45:37,398 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 08:45:37,399 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 08:45:37,405 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 08:45:37,405 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 08:45:37,406 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 08:45:37,406 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 08:45:37,407 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 08:45:37,408 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 08:45:37,408 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 08:45:37,409 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 08:45:37,409 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 08:45:37,409 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 08:45:37,410 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 08:45:37,410 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 08:45:37,411 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 08:45:37,411 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 08:45:37,412 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 08:45:37,413 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 08:45:37,414 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 08:45:37,414 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 08:45:37,415 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 08:45:37,416 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 08:45:37,416 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 08:45:37,416 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 08:45:37,416 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 08:45:37,417 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 08:45:37,417 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 08:45:37,418 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 08:45:37,418 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 08:45:37,418 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 08:45:37,419 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 08:45:37,419 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 08:45:37,419 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 08:45:37,419 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 08:45:37,420 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 08:45:37,420 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6bec9789-fdb1-4213-8635-73502815f763/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-02 08:45:37,427 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 08:45:37,427 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 08:45:37,427 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 08:45:37,428 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 08:45:37,428 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 08:45:37,428 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 08:45:37,428 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 08:45:37,428 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 08:45:37,428 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 08:45:37,428 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 08:45:37,428 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 08:45:37,429 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 08:45:37,429 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 08:45:37,429 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 08:45:37,429 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 08:45:37,429 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 08:45:37,429 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 08:45:37,429 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 08:45:37,429 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 08:45:37,429 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 08:45:37,429 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 08:45:37,429 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 08:45:37,430 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 08:45:37,430 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 08:45:37,430 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 08:45:37,430 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 08:45:37,430 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 08:45:37,430 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 08:45:37,430 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 08:45:37,430 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 08:45:37,430 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_6bec9789-fdb1-4213-8635-73502815f763/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ee0c0bb9185005ad94b7785b09df595a41ce360 [2018-12-02 08:45:37,447 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 08:45:37,454 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 08:45:37,456 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 08:45:37,457 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 08:45:37,457 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 08:45:37,457 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6bec9789-fdb1-4213-8635-73502815f763/bin-2019/uautomizer/../../sv-benchmarks/c/loop-lit/cggmp2005_true-unreach-call_true-termination.c.i [2018-12-02 08:45:37,490 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6bec9789-fdb1-4213-8635-73502815f763/bin-2019/uautomizer/data/90dad21d6/3f98e5d65b0646a08458a47d42bb0cca/FLAGe81f89342 [2018-12-02 08:45:37,875 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 08:45:37,876 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6bec9789-fdb1-4213-8635-73502815f763/sv-benchmarks/c/loop-lit/cggmp2005_true-unreach-call_true-termination.c.i [2018-12-02 08:45:37,879 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6bec9789-fdb1-4213-8635-73502815f763/bin-2019/uautomizer/data/90dad21d6/3f98e5d65b0646a08458a47d42bb0cca/FLAGe81f89342 [2018-12-02 08:45:37,887 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6bec9789-fdb1-4213-8635-73502815f763/bin-2019/uautomizer/data/90dad21d6/3f98e5d65b0646a08458a47d42bb0cca [2018-12-02 08:45:37,889 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 08:45:37,889 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 08:45:37,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 08:45:37,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 08:45:37,892 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 08:45:37,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:45:37" (1/1) ... [2018-12-02 08:45:37,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7084b22b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:45:37, skipping insertion in model container [2018-12-02 08:45:37,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:45:37" (1/1) ... [2018-12-02 08:45:37,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 08:45:37,909 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 08:45:37,994 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 08:45:37,996 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 08:45:38,004 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 08:45:38,012 INFO L195 MainTranslator]: Completed translation [2018-12-02 08:45:38,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:45:38 WrapperNode [2018-12-02 08:45:38,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 08:45:38,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 08:45:38,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 08:45:38,013 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 08:45:38,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:45:38" (1/1) ... [2018-12-02 08:45:38,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:45:38" (1/1) ... [2018-12-02 08:45:38,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 08:45:38,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 08:45:38,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 08:45:38,024 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 08:45:38,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:45:38" (1/1) ... [2018-12-02 08:45:38,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:45:38" (1/1) ... [2018-12-02 08:45:38,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:45:38" (1/1) ... [2018-12-02 08:45:38,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:45:38" (1/1) ... [2018-12-02 08:45:38,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:45:38" (1/1) ... [2018-12-02 08:45:38,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:45:38" (1/1) ... [2018-12-02 08:45:38,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:45:38" (1/1) ... [2018-12-02 08:45:38,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 08:45:38,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 08:45:38,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 08:45:38,036 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 08:45:38,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:45:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6bec9789-fdb1-4213-8635-73502815f763/bin-2019/uautomizer/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 [2018-12-02 08:45:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 08:45:38,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 08:45:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 08:45:38,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 08:45:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 08:45:38,099 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 08:45:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-02 08:45:38,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-02 08:45:38,171 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 08:45:38,171 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-02 08:45:38,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:45:38 BoogieIcfgContainer [2018-12-02 08:45:38,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 08:45:38,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 08:45:38,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 08:45:38,174 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 08:45:38,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:45:37" (1/3) ... [2018-12-02 08:45:38,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d90dfa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:45:38, skipping insertion in model container [2018-12-02 08:45:38,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:45:38" (2/3) ... [2018-12-02 08:45:38,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d90dfa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:45:38, skipping insertion in model container [2018-12-02 08:45:38,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:45:38" (3/3) ... [2018-12-02 08:45:38,176 INFO L112 eAbstractionObserver]: Analyzing ICFG cggmp2005_true-unreach-call_true-termination.c.i [2018-12-02 08:45:38,182 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 08:45:38,186 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 08:45:38,195 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 08:45:38,213 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 08:45:38,213 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 08:45:38,213 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 08:45:38,214 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 08:45:38,214 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 08:45:38,214 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 08:45:38,214 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 08:45:38,214 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 08:45:38,214 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 08:45:38,225 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-12-02 08:45:38,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 08:45:38,228 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:45:38,229 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:45:38,230 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:45:38,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:45:38,233 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2018-12-02 08:45:38,235 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:45:38,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:45:38,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:45:38,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:45:38,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:45:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:45:38,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:45:38,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:45:38,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 08:45:38,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 08:45:38,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 08:45:38,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 08:45:38,326 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2018-12-02 08:45:38,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:45:38,344 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2018-12-02 08:45:38,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 08:45:38,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-02 08:45:38,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:45:38,349 INFO L225 Difference]: With dead ends: 31 [2018-12-02 08:45:38,350 INFO L226 Difference]: Without dead ends: 12 [2018-12-02 08:45:38,352 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 08:45:38,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-02 08:45:38,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-02 08:45:38,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-02 08:45:38,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-12-02 08:45:38,373 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-12-02 08:45:38,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:45:38,374 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-12-02 08:45:38,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 08:45:38,374 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-12-02 08:45:38,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-02 08:45:38,374 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:45:38,375 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:45:38,375 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:45:38,375 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:45:38,375 INFO L82 PathProgramCache]: Analyzing trace with hash -429188558, now seen corresponding path program 1 times [2018-12-02 08:45:38,375 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:45:38,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:45:38,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:45:38,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:45:38,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:45:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:45:38,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:45:38,404 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:45:38,404 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6bec9789-fdb1-4213-8635-73502815f763/bin-2019/uautomizer/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 [2018-12-02 08:45:38,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:45:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:45:38,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:45:38,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:45:38,469 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 08:45:38,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-12-02 08:45:38,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 08:45:38,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 08:45:38,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-12-02 08:45:38,470 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states. [2018-12-02 08:45:38,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:45:38,482 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-12-02 08:45:38,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 08:45:38,482 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-12-02 08:45:38,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:45:38,483 INFO L225 Difference]: With dead ends: 18 [2018-12-02 08:45:38,483 INFO L226 Difference]: Without dead ends: 13 [2018-12-02 08:45:38,483 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-12-02 08:45:38,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-12-02 08:45:38,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-12-02 08:45:38,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-12-02 08:45:38,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-12-02 08:45:38,485 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-12-02 08:45:38,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:45:38,485 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-12-02 08:45:38,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 08:45:38,486 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-12-02 08:45:38,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-02 08:45:38,486 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:45:38,486 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:45:38,486 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:45:38,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:45:38,486 INFO L82 PathProgramCache]: Analyzing trace with hash -384405667, now seen corresponding path program 2 times [2018-12-02 08:45:38,486 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:45:38,486 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:45:38,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:45:38,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:45:38,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:45:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:45:38,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:45:38,513 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:45:38,513 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6bec9789-fdb1-4213-8635-73502815f763/bin-2019/uautomizer/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 [2018-12-02 08:45:38,521 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 08:45:38,528 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 08:45:38,528 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 08:45:38,529 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:45:38,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:45:38,565 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 08:45:38,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-12-02 08:45:38,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 08:45:38,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 08:45:38,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-12-02 08:45:38,566 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 8 states. [2018-12-02 08:45:38,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:45:38,577 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-12-02 08:45:38,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 08:45:38,577 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-12-02 08:45:38,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:45:38,577 INFO L225 Difference]: With dead ends: 19 [2018-12-02 08:45:38,577 INFO L226 Difference]: Without dead ends: 14 [2018-12-02 08:45:38,578 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-12-02 08:45:38,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-12-02 08:45:38,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-12-02 08:45:38,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-02 08:45:38,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-12-02 08:45:38,580 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-12-02 08:45:38,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:45:38,580 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-12-02 08:45:38,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 08:45:38,580 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-12-02 08:45:38,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-02 08:45:38,580 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:45:38,581 INFO L402 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:45:38,581 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:45:38,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:45:38,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1003863954, now seen corresponding path program 3 times [2018-12-02 08:45:38,581 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:45:38,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:45:38,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:45:38,582 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 08:45:38,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:45:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:45:38,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:45:38,607 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:45:38,607 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6bec9789-fdb1-4213-8635-73502815f763/bin-2019/uautomizer/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 [2018-12-02 08:45:38,612 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 08:45:38,618 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-02 08:45:38,618 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 08:45:38,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:45:38,650 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:45:38,664 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 08:45:38,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-12-02 08:45:38,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-02 08:45:38,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-02 08:45:38,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-12-02 08:45:38,665 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 10 states. [2018-12-02 08:45:38,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:45:38,675 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-12-02 08:45:38,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 08:45:38,675 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2018-12-02 08:45:38,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:45:38,675 INFO L225 Difference]: With dead ends: 20 [2018-12-02 08:45:38,675 INFO L226 Difference]: Without dead ends: 15 [2018-12-02 08:45:38,676 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-12-02 08:45:38,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-12-02 08:45:38,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-12-02 08:45:38,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-02 08:45:38,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-12-02 08:45:38,678 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-12-02 08:45:38,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:45:38,678 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-12-02 08:45:38,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-02 08:45:38,679 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-12-02 08:45:38,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-02 08:45:38,679 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:45:38,679 INFO L402 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:45:38,679 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:45:38,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:45:38,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1090549245, now seen corresponding path program 4 times [2018-12-02 08:45:38,680 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:45:38,680 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:45:38,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:45:38,680 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 08:45:38,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:45:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:45:38,771 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:45:38,771 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:45:38,771 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6bec9789-fdb1-4213-8635-73502815f763/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 08:45:38,777 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-02 08:45:38,784 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-02 08:45:38,785 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 08:45:38,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:45:38,803 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:45:38,817 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 08:45:38,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-12-02 08:45:38,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-02 08:45:38,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-02 08:45:38,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-02 08:45:38,818 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 9 states. [2018-12-02 08:45:38,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:45:38,848 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-12-02 08:45:38,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 08:45:38,848 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2018-12-02 08:45:38,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:45:38,848 INFO L225 Difference]: With dead ends: 21 [2018-12-02 08:45:38,848 INFO L226 Difference]: Without dead ends: 16 [2018-12-02 08:45:38,849 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-12-02 08:45:38,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-12-02 08:45:38,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-12-02 08:45:38,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-02 08:45:38,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-12-02 08:45:38,851 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-12-02 08:45:38,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:45:38,851 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-12-02 08:45:38,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-02 08:45:38,851 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-12-02 08:45:38,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-02 08:45:38,851 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:45:38,851 INFO L402 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:45:38,851 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:45:38,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:45:38,852 INFO L82 PathProgramCache]: Analyzing trace with hash -517174030, now seen corresponding path program 5 times [2018-12-02 08:45:38,852 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:45:38,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:45:38,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:45:38,852 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 08:45:38,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:45:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:45:38,884 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:45:38,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:45:38,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 08:45:38,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 08:45:38,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 08:45:38,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-02 08:45:38,885 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 7 states. [2018-12-02 08:45:38,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:45:38,891 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-12-02 08:45:38,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 08:45:38,892 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2018-12-02 08:45:38,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:45:38,892 INFO L225 Difference]: With dead ends: 16 [2018-12-02 08:45:38,892 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 08:45:38,892 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-02 08:45:38,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 08:45:38,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 08:45:38,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 08:45:38,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 08:45:38,893 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-12-02 08:45:38,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:45:38,893 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 08:45:38,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 08:45:38,893 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 08:45:38,893 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 08:45:38,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-02 08:45:38,958 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-02 08:45:38,958 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-02 08:45:38,958 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-02 08:45:38,959 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-02 08:45:38,959 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-02 08:45:38,959 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-02 08:45:38,959 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 10 20) the Hoare annotation is: true [2018-12-02 08:45:38,959 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 10 20) no Hoare annotation was computed. [2018-12-02 08:45:38,959 INFO L448 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-12-02 08:45:38,959 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 10 20) no Hoare annotation was computed. [2018-12-02 08:45:38,959 INFO L444 ceAbstractionStarter]: At program point L14-2(lines 14 17) the Hoare annotation is: (or (and (<= 8 main_~j~0) (<= main_~j~0 (+ main_~i~0 3)) (<= main_~i~0 5)) (and (<= 6 main_~j~0) (<= (+ main_~j~0 3) main_~i~0) (<= main_~j~0 6)) (and (<= main_~j~0 (+ main_~i~0 9)) (<= main_~i~0 1) (<= 10 main_~j~0)) (and (<= 7 main_~j~0) (<= main_~j~0 main_~i~0) (<= main_~i~0 7)) (and (<= main_~i~0 3) (<= main_~j~0 (+ main_~i~0 6)) (<= 9 main_~j~0))) [2018-12-02 08:45:38,959 INFO L444 ceAbstractionStarter]: At program point L14-3(lines 14 17) the Hoare annotation is: (and (<= 6 main_~j~0) (<= main_~j~0 6)) [2018-12-02 08:45:38,959 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-12-02 08:45:38,959 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-12-02 08:45:38,960 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-12-02 08:45:38,960 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-12-02 08:45:38,960 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-12-02 08:45:38,960 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-12-02 08:45:38,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 08:45:38 BoogieIcfgContainer [2018-12-02 08:45:38,968 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 08:45:38,969 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 08:45:38,969 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 08:45:38,969 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 08:45:38,969 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:45:38" (3/4) ... [2018-12-02 08:45:38,971 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 08:45:38,976 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 08:45:38,976 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 08:45:38,976 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-12-02 08:45:38,978 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-02 08:45:38,978 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-02 08:45:38,979 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 08:45:39,002 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_6bec9789-fdb1-4213-8635-73502815f763/bin-2019/uautomizer/witness.graphml [2018-12-02 08:45:39,002 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 08:45:39,002 INFO L168 Benchmark]: Toolchain (without parser) took 1113.60 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 86.0 MB). Free memory was 958.7 MB in the beginning and 937.8 MB in the end (delta: 20.9 MB). Peak memory consumption was 106.9 MB. Max. memory is 11.5 GB. [2018-12-02 08:45:39,003 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 08:45:39,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 122.54 ms. Allocated memory is still 1.0 GB. Free memory was 958.7 MB in the beginning and 947.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 08:45:39,004 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.38 ms. Allocated memory is still 1.0 GB. Free memory is still 947.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 08:45:39,004 INFO L168 Benchmark]: Boogie Preprocessor took 11.44 ms. Allocated memory is still 1.0 GB. Free memory is still 947.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 08:45:39,004 INFO L168 Benchmark]: RCFGBuilder took 135.62 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 86.0 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -127.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2018-12-02 08:45:39,005 INFO L168 Benchmark]: TraceAbstraction took 796.56 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 940.5 MB in the end (delta: 134.6 MB). Peak memory consumption was 134.6 MB. Max. memory is 11.5 GB. [2018-12-02 08:45:39,005 INFO L168 Benchmark]: Witness Printer took 33.35 ms. Allocated memory is still 1.1 GB. Free memory was 940.5 MB in the beginning and 937.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-02 08:45:39,006 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 122.54 ms. Allocated memory is still 1.0 GB. Free memory was 958.7 MB in the beginning and 947.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.38 ms. Allocated memory is still 1.0 GB. Free memory is still 947.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.44 ms. Allocated memory is still 1.0 GB. Free memory is still 947.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 135.62 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 86.0 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -127.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 796.56 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 940.5 MB in the end (delta: 134.6 MB). Peak memory consumption was 134.6 MB. Max. memory is 11.5 GB. * Witness Printer took 33.35 ms. Allocated memory is still 1.1 GB. Free memory was 940.5 MB in the beginning and 937.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((8 <= j && j <= i + 3) && i <= 5) || ((6 <= j && j + 3 <= i) && j <= 6)) || ((j <= i + 9 && i <= 1) && 10 <= j)) || ((7 <= j && j <= i) && i <= 7)) || ((i <= 3 && j <= i + 6) && 9 <= j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 6 OverallIterations, 5 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 60 SDtfs, 1 SDslu, 108 SDs, 0 SdLazy, 90 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 18 NumberOfFragments, 71 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 3659 SizeOfPredicates, 8 NumberOfNonLiveVariables, 146 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 15/55 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...