./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loops/n.c11_true-unreach-call_false-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_6fcaadb9-b4fd-4258-a06d-4f0a75d9b5e2/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6fcaadb9-b4fd-4258-a06d-4f0a75d9b5e2/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6fcaadb9-b4fd-4258-a06d-4f0a75d9b5e2/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6fcaadb9-b4fd-4258-a06d-4f0a75d9b5e2/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/n.c11_true-unreach-call_false-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_6fcaadb9-b4fd-4258-a06d-4f0a75d9b5e2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6fcaadb9-b4fd-4258-a06d-4f0a75d9b5e2/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 24b22c477e8a47eac290a2fc1c5b1e1aaa3a4fa4 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 05:56:19,590 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 05:56:19,591 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 05:56:19,599 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 05:56:19,599 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 05:56:19,599 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 05:56:19,600 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 05:56:19,601 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 05:56:19,602 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 05:56:19,603 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 05:56:19,604 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 05:56:19,604 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 05:56:19,604 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 05:56:19,605 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 05:56:19,606 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 05:56:19,606 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 05:56:19,607 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 05:56:19,608 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 05:56:19,609 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 05:56:19,610 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 05:56:19,611 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 05:56:19,612 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 05:56:19,613 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 05:56:19,614 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 05:56:19,614 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 05:56:19,614 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 05:56:19,615 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 05:56:19,616 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 05:56:19,616 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 05:56:19,617 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 05:56:19,617 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 05:56:19,617 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 05:56:19,618 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 05:56:19,618 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 05:56:19,618 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 05:56:19,619 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 05:56:19,619 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6fcaadb9-b4fd-4258-a06d-4f0a75d9b5e2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 05:56:19,629 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 05:56:19,629 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 05:56:19,629 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 05:56:19,629 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 05:56:19,630 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 05:56:19,630 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 05:56:19,630 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 05:56:19,630 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 05:56:19,631 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 05:56:19,631 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 05:56:19,631 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 05:56:19,631 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 05:56:19,631 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 05:56:19,631 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 05:56:19,631 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 05:56:19,631 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 05:56:19,632 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 05:56:19,632 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 05:56:19,632 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 05:56:19,632 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 05:56:19,632 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 05:56:19,632 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 05:56:19,632 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 05:56:19,632 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 05:56:19,633 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 05:56:19,633 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 05:56:19,633 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 05:56:19,633 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 05:56:19,633 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 05:56:19,633 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_6fcaadb9-b4fd-4258-a06d-4f0a75d9b5e2/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 -> 24b22c477e8a47eac290a2fc1c5b1e1aaa3a4fa4 [2018-11-10 05:56:19,657 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 05:56:19,665 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 05:56:19,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 05:56:19,668 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 05:56:19,668 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 05:56:19,669 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6fcaadb9-b4fd-4258-a06d-4f0a75d9b5e2/bin-2019/uautomizer/../../sv-benchmarks/c/loops/n.c11_true-unreach-call_false-termination.i [2018-11-10 05:56:19,703 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6fcaadb9-b4fd-4258-a06d-4f0a75d9b5e2/bin-2019/uautomizer/data/c572bc7dc/924bc5526f4946daae28c5255dad94ac/FLAG9cc7cc5a4 [2018-11-10 05:56:20,025 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 05:56:20,026 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6fcaadb9-b4fd-4258-a06d-4f0a75d9b5e2/sv-benchmarks/c/loops/n.c11_true-unreach-call_false-termination.i [2018-11-10 05:56:20,031 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6fcaadb9-b4fd-4258-a06d-4f0a75d9b5e2/bin-2019/uautomizer/data/c572bc7dc/924bc5526f4946daae28c5255dad94ac/FLAG9cc7cc5a4 [2018-11-10 05:56:20,041 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6fcaadb9-b4fd-4258-a06d-4f0a75d9b5e2/bin-2019/uautomizer/data/c572bc7dc/924bc5526f4946daae28c5255dad94ac [2018-11-10 05:56:20,043 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 05:56:20,044 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 05:56:20,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 05:56:20,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 05:56:20,048 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 05:56:20,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:56:20" (1/1) ... [2018-11-10 05:56:20,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@549999d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:56:20, skipping insertion in model container [2018-11-10 05:56:20,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:56:20" (1/1) ... [2018-11-10 05:56:20,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 05:56:20,069 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 05:56:20,170 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:56:20,172 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 05:56:20,182 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:56:20,190 INFO L193 MainTranslator]: Completed translation [2018-11-10 05:56:20,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:56:20 WrapperNode [2018-11-10 05:56:20,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 05:56:20,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 05:56:20,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 05:56:20,191 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 05:56:20,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:56:20" (1/1) ... [2018-11-10 05:56:20,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:56:20" (1/1) ... [2018-11-10 05:56:20,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:56:20" (1/1) ... [2018-11-10 05:56:20,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:56:20" (1/1) ... [2018-11-10 05:56:20,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:56:20" (1/1) ... [2018-11-10 05:56:20,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:56:20" (1/1) ... [2018-11-10 05:56:20,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:56:20" (1/1) ... [2018-11-10 05:56:20,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 05:56:20,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 05:56:20,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 05:56:20,210 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 05:56:20,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:56:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6fcaadb9-b4fd-4258-a06d-4f0a75d9b5e2/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 [2018-11-10 05:56:20,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 05:56:20,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 05:56:20,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 05:56:20,293 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 05:56:20,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 05:56:20,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 05:56:20,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2018-11-10 05:56:20,293 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 05:56:20,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 05:56:20,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 05:56:20,387 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 05:56:20,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:56:20 BoogieIcfgContainer [2018-11-10 05:56:20,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 05:56:20,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 05:56:20,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 05:56:20,391 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 05:56:20,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:56:20" (1/3) ... [2018-11-10 05:56:20,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ab6af22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:56:20, skipping insertion in model container [2018-11-10 05:56:20,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:56:20" (2/3) ... [2018-11-10 05:56:20,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ab6af22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:56:20, skipping insertion in model container [2018-11-10 05:56:20,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:56:20" (3/3) ... [2018-11-10 05:56:20,394 INFO L112 eAbstractionObserver]: Analyzing ICFG n.c11_true-unreach-call_false-termination.i [2018-11-10 05:56:20,400 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 05:56:20,404 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 05:56:20,412 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 05:56:20,431 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 05:56:20,432 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 05:56:20,432 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 05:56:20,432 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 05:56:20,432 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 05:56:20,432 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 05:56:20,432 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 05:56:20,432 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 05:56:20,432 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 05:56:20,444 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-10 05:56:20,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 05:56:20,447 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:56:20,448 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:56:20,450 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:56:20,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:56:20,453 INFO L82 PathProgramCache]: Analyzing trace with hash -2008095039, now seen corresponding path program 1 times [2018-11-10 05:56:20,454 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:56:20,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:56:20,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:56:20,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:56:20,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:56:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:56:20,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:56:20,522 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:56:20,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 05:56:20,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 05:56:20,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 05:56:20,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 05:56:20,533 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2018-11-10 05:56:20,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:56:20,545 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-10 05:56:20,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 05:56:20,546 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-10 05:56:20,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:56:20,551 INFO L225 Difference]: With dead ends: 33 [2018-11-10 05:56:20,551 INFO L226 Difference]: Without dead ends: 14 [2018-11-10 05:56:20,553 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 05:56:20,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-10 05:56:20,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-10 05:56:20,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-10 05:56:20,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-11-10 05:56:20,579 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2018-11-10 05:56:20,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:56:20,580 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-11-10 05:56:20,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 05:56:20,580 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-11-10 05:56:20,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-10 05:56:20,580 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:56:20,580 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:56:20,580 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:56:20,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:56:20,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1715940768, now seen corresponding path program 1 times [2018-11-10 05:56:20,581 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:56:20,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:56:20,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:56:20,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:56:20,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:56:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:56:20,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:56:20,644 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:56:20,644 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 05:56:20,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 05:56:20,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 05:56:20,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 05:56:20,645 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 5 states. [2018-11-10 05:56:20,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:56:20,680 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2018-11-10 05:56:20,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 05:56:20,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-10 05:56:20,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:56:20,682 INFO L225 Difference]: With dead ends: 30 [2018-11-10 05:56:20,682 INFO L226 Difference]: Without dead ends: 18 [2018-11-10 05:56:20,682 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 05:56:20,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-10 05:56:20,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-11-10 05:56:20,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-10 05:56:20,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-11-10 05:56:20,686 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 11 [2018-11-10 05:56:20,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:56:20,686 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-11-10 05:56:20,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 05:56:20,686 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-11-10 05:56:20,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-10 05:56:20,687 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:56:20,687 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:56:20,687 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:56:20,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:56:20,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1048902920, now seen corresponding path program 1 times [2018-11-10 05:56:20,688 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:56:20,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:56:20,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:56:20,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:56:20,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:56:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:56:20,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:56:20,767 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:56:20,767 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6fcaadb9-b4fd-4258-a06d-4f0a75d9b5e2/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 [2018-11-10 05:56:20,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:56:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:56:20,795 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:56:20,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:56:20,850 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:56:20,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-10 05:56:20,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 05:56:20,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 05:56:20,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-10 05:56:20,851 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 6 states. [2018-11-10 05:56:20,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:56:20,897 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2018-11-10 05:56:20,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 05:56:20,898 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-11-10 05:56:20,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:56:20,898 INFO L225 Difference]: With dead ends: 34 [2018-11-10 05:56:20,899 INFO L226 Difference]: Without dead ends: 22 [2018-11-10 05:56:20,899 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-10 05:56:20,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-10 05:56:20,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2018-11-10 05:56:20,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-10 05:56:20,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-11-10 05:56:20,903 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 15 [2018-11-10 05:56:20,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:56:20,903 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-11-10 05:56:20,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 05:56:20,904 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-11-10 05:56:20,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-10 05:56:20,904 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:56:20,904 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:56:20,904 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:56:20,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:56:20,905 INFO L82 PathProgramCache]: Analyzing trace with hash 452778096, now seen corresponding path program 2 times [2018-11-10 05:56:20,905 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:56:20,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:56:20,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:56:20,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:56:20,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:56:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:56:21,008 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:56:21,008 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:56:21,008 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6fcaadb9-b4fd-4258-a06d-4f0a75d9b5e2/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 [2018-11-10 05:56:21,019 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 05:56:21,028 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 05:56:21,028 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:56:21,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:56:21,046 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:56:21,065 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:56:21,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-10 05:56:21,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 05:56:21,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 05:56:21,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-10 05:56:21,066 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 7 states. [2018-11-10 05:56:21,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:56:21,113 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2018-11-10 05:56:21,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 05:56:21,114 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-11-10 05:56:21,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:56:21,114 INFO L225 Difference]: With dead ends: 42 [2018-11-10 05:56:21,115 INFO L226 Difference]: Without dead ends: 26 [2018-11-10 05:56:21,115 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-10 05:56:21,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-10 05:56:21,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2018-11-10 05:56:21,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-10 05:56:21,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-11-10 05:56:21,118 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 19 [2018-11-10 05:56:21,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:56:21,119 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-11-10 05:56:21,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 05:56:21,119 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-11-10 05:56:21,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-10 05:56:21,119 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:56:21,119 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:56:21,120 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:56:21,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:56:21,120 INFO L82 PathProgramCache]: Analyzing trace with hash -137838632, now seen corresponding path program 3 times [2018-11-10 05:56:21,120 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:56:21,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:56:21,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:56:21,121 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:56:21,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:56:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:56:21,199 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:56:21,199 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:56:21,199 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6fcaadb9-b4fd-4258-a06d-4f0a75d9b5e2/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 [2018-11-10 05:56:21,208 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 05:56:21,235 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-10 05:56:21,235 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:56:21,237 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:56:21,277 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:56:21,293 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:56:21,293 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-10 05:56:21,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 05:56:21,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 05:56:21,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-10 05:56:21,294 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 8 states. [2018-11-10 05:56:21,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:56:21,361 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2018-11-10 05:56:21,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 05:56:21,362 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-11-10 05:56:21,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:56:21,362 INFO L225 Difference]: With dead ends: 50 [2018-11-10 05:56:21,363 INFO L226 Difference]: Without dead ends: 30 [2018-11-10 05:56:21,363 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-10 05:56:21,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-10 05:56:21,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2018-11-10 05:56:21,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-10 05:56:21,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-11-10 05:56:21,366 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 23 [2018-11-10 05:56:21,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:56:21,366 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-11-10 05:56:21,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 05:56:21,366 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-11-10 05:56:21,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-10 05:56:21,367 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:56:21,367 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:56:21,367 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:56:21,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:56:21,367 INFO L82 PathProgramCache]: Analyzing trace with hash 872592192, now seen corresponding path program 4 times [2018-11-10 05:56:21,367 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:56:21,368 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:56:21,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:56:21,368 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:56:21,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:56:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:56:21,486 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:56:21,486 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:56:21,486 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6fcaadb9-b4fd-4258-a06d-4f0a75d9b5e2/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 [2018-11-10 05:56:21,492 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 05:56:21,506 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 05:56:21,506 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:56:21,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:56:21,538 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:56:21,562 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:56:21,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-10 05:56:21,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 05:56:21,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 05:56:21,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-10 05:56:21,563 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 9 states. [2018-11-10 05:56:21,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:56:21,604 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2018-11-10 05:56:21,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 05:56:21,605 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2018-11-10 05:56:21,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:56:21,605 INFO L225 Difference]: With dead ends: 48 [2018-11-10 05:56:21,605 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 05:56:21,606 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-11-10 05:56:21,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 05:56:21,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 05:56:21,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 05:56:21,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 05:56:21,607 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-11-10 05:56:21,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:56:21,607 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 05:56:21,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 05:56:21,607 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 05:56:21,607 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 05:56:21,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 05:56:21,664 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 05:56:21,665 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 05:56:21,665 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 05:56:21,665 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 05:56:21,665 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 05:56:21,665 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 05:56:21,665 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 9 21) the Hoare annotation is: true [2018-11-10 05:56:21,665 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 9 21) no Hoare annotation was computed. [2018-11-10 05:56:21,665 INFO L425 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2018-11-10 05:56:21,665 INFO L425 ceAbstractionStarter]: For program point L14(lines 14 15) no Hoare annotation was computed. [2018-11-10 05:56:21,665 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 9 21) no Hoare annotation was computed. [2018-11-10 05:56:21,666 INFO L425 ceAbstractionStarter]: For program point L13-1(lines 13 18) no Hoare annotation was computed. [2018-11-10 05:56:21,666 INFO L425 ceAbstractionStarter]: For program point L14-2(lines 14 15) no Hoare annotation was computed. [2018-11-10 05:56:21,666 INFO L421 ceAbstractionStarter]: At program point L13-3(lines 13 18) the Hoare annotation is: (or (and (<= main_~len~0 0) (<= 0 main_~len~0)) (and (<= 4 main_~len~0) (<= main_~len~0 4)) (and (<= main_~len~0 2) (<= 2 main_~len~0)) (and (<= 1 main_~len~0) (<= main_~len~0 1)) (and (<= main_~len~0 3) (<= 3 main_~len~0))) [2018-11-10 05:56:21,666 INFO L421 ceAbstractionStarter]: At program point L13-4(lines 13 18) the Hoare annotation is: (or (and (<= main_~len~0 0) (<= 0 main_~len~0)) (and (<= 4 main_~len~0) (<= main_~len~0 4)) (and (<= main_~len~0 2) (<= 2 main_~len~0)) (and (<= 1 main_~len~0) (<= main_~len~0 1)) (and (<= main_~len~0 3) (<= 3 main_~len~0))) [2018-11-10 05:56:21,666 INFO L425 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-11-10 05:56:21,666 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-11-10 05:56:21,666 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-11-10 05:56:21,667 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-11-10 05:56:21,667 INFO L425 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-11-10 05:56:21,667 INFO L425 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-11-10 05:56:21,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 05:56:21 BoogieIcfgContainer [2018-11-10 05:56:21,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 05:56:21,675 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 05:56:21,675 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 05:56:21,676 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 05:56:21,676 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:56:20" (3/4) ... [2018-11-10 05:56:21,678 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 05:56:21,682 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 05:56:21,682 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 05:56:21,682 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-10 05:56:21,686 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-10 05:56:21,686 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-10 05:56:21,686 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 05:56:21,715 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_6fcaadb9-b4fd-4258-a06d-4f0a75d9b5e2/bin-2019/uautomizer/witness.graphml [2018-11-10 05:56:21,715 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 05:56:21,716 INFO L168 Benchmark]: Toolchain (without parser) took 1672.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 186.1 MB). Free memory was 959.1 MB in the beginning and 1.0 GB in the end (delta: -52.2 MB). Peak memory consumption was 133.9 MB. Max. memory is 11.5 GB. [2018-11-10 05:56:21,717 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:56:21,717 INFO L168 Benchmark]: CACSL2BoogieTranslator took 145.47 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 05:56:21,717 INFO L168 Benchmark]: Boogie Preprocessor took 18.84 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:56:21,717 INFO L168 Benchmark]: RCFGBuilder took 177.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 186.1 MB). Free memory was 948.4 MB in the beginning and 1.2 GB in the end (delta: -224.9 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2018-11-10 05:56:21,718 INFO L168 Benchmark]: TraceAbstraction took 1286.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.0 GB in the end (delta: 158.8 MB). Peak memory consumption was 158.8 MB. Max. memory is 11.5 GB. [2018-11-10 05:56:21,718 INFO L168 Benchmark]: Witness Printer took 39.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2018-11-10 05:56:21,720 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 145.47 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.84 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 177.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 186.1 MB). Free memory was 948.4 MB in the beginning and 1.2 GB in the end (delta: -224.9 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1286.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.0 GB in the end (delta: 158.8 MB). Peak memory consumption was 158.8 MB. Max. memory is 11.5 GB. * Witness Printer took 39.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 13]: Loop Invariant Derived loop invariant: ((((len <= 0 && 0 <= len) || (4 <= len && len <= 4)) || (len <= 2 && 2 <= len)) || (1 <= len && len <= 1)) || (len <= 3 && 3 <= len) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 1.2s OverallTime, 6 OverallIterations, 5 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 99 SDtfs, 14 SDslu, 336 SDs, 0 SdLazy, 220 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 83 SyntacticMatches, 9 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 17 PreInvPairs, 27 NumberOfFragments, 77 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 189 NumberOfCodeBlocks, 189 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 179 ConstructedInterpolants, 0 QuantifiedInterpolants, 17841 SizeOfPredicates, 8 NumberOfNonLiveVariables, 156 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 0/120 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...