./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Copenhagen_true-no-overflow_true-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ac2dd970-d054-4228-80c5-e4981121d6cc/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ac2dd970-d054-4228-80c5-e4981121d6cc/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ac2dd970-d054-4228-80c5-e4981121d6cc/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ac2dd970-d054-4228-80c5-e4981121d6cc/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Copenhagen_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_ac2dd970-d054-4228-80c5-e4981121d6cc/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ac2dd970-d054-4228-80c5-e4981121d6cc/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9bcaeaea390de0d2b32b8c11c56b4b66e7b2005e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-22 22:28:23,430 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 22:28:23,431 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 22:28:23,437 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 22:28:23,437 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 22:28:23,438 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 22:28:23,438 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 22:28:23,439 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 22:28:23,440 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 22:28:23,440 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 22:28:23,441 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 22:28:23,441 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 22:28:23,441 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 22:28:23,442 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 22:28:23,442 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 22:28:23,443 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 22:28:23,443 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 22:28:23,444 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 22:28:23,445 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 22:28:23,446 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 22:28:23,447 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 22:28:23,448 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 22:28:23,450 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 22:28:23,450 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 22:28:23,450 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 22:28:23,451 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 22:28:23,452 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 22:28:23,453 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 22:28:23,453 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 22:28:23,454 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 22:28:23,455 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 22:28:23,455 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 22:28:23,455 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 22:28:23,455 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 22:28:23,456 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 22:28:23,457 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 22:28:23,457 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ac2dd970-d054-4228-80c5-e4981121d6cc/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-11-22 22:28:23,467 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 22:28:23,467 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 22:28:23,468 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 22:28:23,468 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 22:28:23,468 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-22 22:28:23,468 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-22 22:28:23,468 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-22 22:28:23,468 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-22 22:28:23,468 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-22 22:28:23,469 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-22 22:28:23,469 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-22 22:28:23,469 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-22 22:28:23,469 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-22 22:28:23,469 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 22:28:23,470 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-22 22:28:23,470 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 22:28:23,470 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 22:28:23,470 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-22 22:28:23,470 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 22:28:23,470 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-22 22:28:23,470 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-22 22:28:23,471 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 22:28:23,471 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 22:28:23,471 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-22 22:28:23,471 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 22:28:23,471 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 22:28:23,471 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 22:28:23,471 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 22:28:23,472 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 22:28:23,472 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 22:28:23,472 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 22:28:23,472 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-22 22:28:23,472 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-22 22:28:23,472 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 22:28:23,472 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-22 22:28:23,472 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-22 22:28:23,473 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_ac2dd970-d054-4228-80c5-e4981121d6cc/bin-2019/utaipan 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 ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bcaeaea390de0d2b32b8c11c56b4b66e7b2005e [2018-11-22 22:28:23,501 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 22:28:23,510 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 22:28:23,513 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 22:28:23,514 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 22:28:23,514 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 22:28:23,515 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ac2dd970-d054-4228-80c5-e4981121d6cc/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted/Copenhagen_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-22 22:28:23,563 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ac2dd970-d054-4228-80c5-e4981121d6cc/bin-2019/utaipan/data/1ac9f2822/800bd7bd14584a658feddb7b91334092/FLAG22e482ad2 [2018-11-22 22:28:23,904 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 22:28:23,905 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ac2dd970-d054-4228-80c5-e4981121d6cc/sv-benchmarks/c/termination-crafted/Copenhagen_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-22 22:28:23,911 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ac2dd970-d054-4228-80c5-e4981121d6cc/bin-2019/utaipan/data/1ac9f2822/800bd7bd14584a658feddb7b91334092/FLAG22e482ad2 [2018-11-22 22:28:24,318 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ac2dd970-d054-4228-80c5-e4981121d6cc/bin-2019/utaipan/data/1ac9f2822/800bd7bd14584a658feddb7b91334092 [2018-11-22 22:28:24,320 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 22:28:24,321 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 22:28:24,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 22:28:24,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 22:28:24,325 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 22:28:24,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:28:24" (1/1) ... [2018-11-22 22:28:24,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@468ecb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:24, skipping insertion in model container [2018-11-22 22:28:24,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:28:24" (1/1) ... [2018-11-22 22:28:24,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 22:28:24,345 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 22:28:24,441 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 22:28:24,443 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 22:28:24,452 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 22:28:24,459 INFO L195 MainTranslator]: Completed translation [2018-11-22 22:28:24,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:24 WrapperNode [2018-11-22 22:28:24,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 22:28:24,460 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 22:28:24,460 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 22:28:24,460 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 22:28:24,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:24" (1/1) ... [2018-11-22 22:28:24,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:24" (1/1) ... [2018-11-22 22:28:24,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 22:28:24,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 22:28:24,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 22:28:24,473 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 22:28:24,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:24" (1/1) ... [2018-11-22 22:28:24,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:24" (1/1) ... [2018-11-22 22:28:24,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:24" (1/1) ... [2018-11-22 22:28:24,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:24" (1/1) ... [2018-11-22 22:28:24,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:24" (1/1) ... [2018-11-22 22:28:24,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:24" (1/1) ... [2018-11-22 22:28:24,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:24" (1/1) ... [2018-11-22 22:28:24,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 22:28:24,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 22:28:24,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 22:28:24,486 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 22:28:24,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ac2dd970-d054-4228-80c5-e4981121d6cc/bin-2019/utaipan/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 [2018-11-22 22:28:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-22 22:28:24,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-22 22:28:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 22:28:24,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 22:28:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-22 22:28:24,556 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-22 22:28:24,650 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 22:28:24,650 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-22 22:28:24,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:28:24 BoogieIcfgContainer [2018-11-22 22:28:24,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 22:28:24,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 22:28:24,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 22:28:24,653 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 22:28:24,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:28:24" (1/3) ... [2018-11-22 22:28:24,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e41a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:28:24, skipping insertion in model container [2018-11-22 22:28:24,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:24" (2/3) ... [2018-11-22 22:28:24,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e41a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:28:24, skipping insertion in model container [2018-11-22 22:28:24,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:28:24" (3/3) ... [2018-11-22 22:28:24,655 INFO L112 eAbstractionObserver]: Analyzing ICFG Copenhagen_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-22 22:28:24,662 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 22:28:24,667 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-22 22:28:24,677 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-22 22:28:24,696 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 22:28:24,696 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-22 22:28:24,696 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 22:28:24,696 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 22:28:24,696 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 22:28:24,697 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 22:28:24,697 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 22:28:24,697 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 22:28:24,710 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-22 22:28:24,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-22 22:28:24,713 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:28:24,714 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-22 22:28:24,716 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-22 22:28:24,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:28:24,720 INFO L82 PathProgramCache]: Analyzing trace with hash -37667266, now seen corresponding path program 1 times [2018-11-22 22:28:24,722 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 22:28:24,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:28:24,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:28:24,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:28:24,762 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 22:28:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:28:24,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:28:24,826 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:28:24,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-22 22:28:24,826 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 22:28:24,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-22 22:28:24,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 22:28:24,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 22:28:24,840 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2018-11-22 22:28:24,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:28:24,883 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2018-11-22 22:28:24,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 22:28:24,885 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-11-22 22:28:24,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:28:24,892 INFO L225 Difference]: With dead ends: 35 [2018-11-22 22:28:24,892 INFO L226 Difference]: Without dead ends: 21 [2018-11-22 22:28:24,895 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 22:28:24,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-22 22:28:24,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2018-11-22 22:28:24,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-22 22:28:24,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-22 22:28:24,920 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2018-11-22 22:28:24,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:28:24,920 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-22 22:28:24,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-22 22:28:24,920 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-22 22:28:24,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-22 22:28:24,921 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:28:24,921 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 22:28:24,921 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-22 22:28:24,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:28:24,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1167685199, now seen corresponding path program 1 times [2018-11-22 22:28:24,922 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 22:28:24,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:28:24,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:28:24,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:28:24,923 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 22:28:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:28:24,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:28:24,940 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:28:24,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-22 22:28:24,940 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 22:28:24,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-22 22:28:24,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 22:28:24,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 22:28:24,942 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2018-11-22 22:28:24,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:28:24,953 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-11-22 22:28:24,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 22:28:24,953 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-11-22 22:28:24,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:28:24,954 INFO L225 Difference]: With dead ends: 16 [2018-11-22 22:28:24,954 INFO L226 Difference]: Without dead ends: 15 [2018-11-22 22:28:24,955 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 22:28:24,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-22 22:28:24,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-22 22:28:24,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-22 22:28:24,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-22 22:28:24,958 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2018-11-22 22:28:24,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:28:24,958 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-22 22:28:24,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-22 22:28:24,958 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-22 22:28:24,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-22 22:28:24,958 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:28:24,959 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 22:28:24,959 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-22 22:28:24,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:28:24,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1838502752, now seen corresponding path program 1 times [2018-11-22 22:28:24,959 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 22:28:24,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:28:24,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:28:24,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:28:24,961 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 22:28:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:28:24,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:28:24,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:28:24,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-22 22:28:24,998 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 22:28:24,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-22 22:28:24,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-22 22:28:24,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-22 22:28:24,999 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2018-11-22 22:28:25,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:28:25,033 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2018-11-22 22:28:25,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-22 22:28:25,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-11-22 22:28:25,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:28:25,034 INFO L225 Difference]: With dead ends: 20 [2018-11-22 22:28:25,034 INFO L226 Difference]: Without dead ends: 19 [2018-11-22 22:28:25,034 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-22 22:28:25,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-22 22:28:25,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2018-11-22 22:28:25,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-22 22:28:25,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-11-22 22:28:25,038 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 9 [2018-11-22 22:28:25,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:28:25,038 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-11-22 22:28:25,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-22 22:28:25,038 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-22 22:28:25,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-22 22:28:25,039 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:28:25,039 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 22:28:25,039 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-22 22:28:25,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:28:25,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1159010413, now seen corresponding path program 1 times [2018-11-22 22:28:25,039 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 22:28:25,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:28:25,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:28:25,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:28:25,041 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 22:28:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:28:25,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:28:25,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:28:25,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-22 22:28:25,071 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 22:28:25,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-22 22:28:25,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 22:28:25,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 22:28:25,072 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 3 states. [2018-11-22 22:28:25,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:28:25,077 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-11-22 22:28:25,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 22:28:25,077 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-22 22:28:25,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:28:25,078 INFO L225 Difference]: With dead ends: 17 [2018-11-22 22:28:25,078 INFO L226 Difference]: Without dead ends: 16 [2018-11-22 22:28:25,078 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 22:28:25,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-22 22:28:25,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-22 22:28:25,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-22 22:28:25,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-22 22:28:25,080 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 10 [2018-11-22 22:28:25,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:28:25,080 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-22 22:28:25,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-22 22:28:25,081 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-22 22:28:25,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-22 22:28:25,081 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:28:25,081 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 22:28:25,081 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-22 22:28:25,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:28:25,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1412475851, now seen corresponding path program 1 times [2018-11-22 22:28:25,082 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 22:28:25,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:28:25,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:28:25,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:28:25,083 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 22:28:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:28:25,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:28:25,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:28:25,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-22 22:28:25,116 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 22:28:25,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-22 22:28:25,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-22 22:28:25,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-22 22:28:25,116 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 4 states. [2018-11-22 22:28:25,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:28:25,154 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-11-22 22:28:25,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-22 22:28:25,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-11-22 22:28:25,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:28:25,155 INFO L225 Difference]: With dead ends: 16 [2018-11-22 22:28:25,155 INFO L226 Difference]: Without dead ends: 15 [2018-11-22 22:28:25,155 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-22 22:28:25,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-22 22:28:25,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-22 22:28:25,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-22 22:28:25,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-22 22:28:25,158 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-11-22 22:28:25,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:28:25,159 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-22 22:28:25,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-22 22:28:25,159 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-22 22:28:25,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-22 22:28:25,159 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:28:25,159 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 22:28:25,160 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-22 22:28:25,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:28:25,160 INFO L82 PathProgramCache]: Analyzing trace with hash -179625769, now seen corresponding path program 1 times [2018-11-22 22:28:25,160 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 22:28:25,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:28:25,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:28:25,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:28:25,162 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 22:28:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:28:25,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:28:25,191 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 22:28:25,191 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-22 22:28:25,192 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-11-22 22:28:25,193 INFO L202 CegarAbsIntRunner]: [0], [4], [13], [15], [17], [18], [19], [21], [27], [28], [29] [2018-11-22 22:28:25,214 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-22 22:28:25,214 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-22 22:28:25,296 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-22 22:28:25,297 INFO L272 AbstractInterpreter]: Visited 11 different actions 11 times. Never merged. Never widened. Performed 32 root evaluator evaluations with a maximum evaluation depth of 3. Performed 32 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2018-11-22 22:28:25,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:28:25,302 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-22 22:28:25,302 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 22:28:25,302 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ac2dd970-d054-4228-80c5-e4981121d6cc/bin-2019/utaipan/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 [2018-11-22 22:28:25,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:28:25,309 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-22 22:28:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:28:25,325 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:28:25,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:28:25,408 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 22:28:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:28:25,451 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-22 22:28:25,451 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2018-11-22 22:28:25,451 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-22 22:28:25,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-22 22:28:25,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-22 22:28:25,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-11-22 22:28:25,452 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-11-22 22:28:25,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:28:25,515 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-11-22 22:28:25,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-22 22:28:25,515 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-11-22 22:28:25,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:28:25,516 INFO L225 Difference]: With dead ends: 17 [2018-11-22 22:28:25,516 INFO L226 Difference]: Without dead ends: 0 [2018-11-22 22:28:25,516 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2018-11-22 22:28:25,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-22 22:28:25,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-22 22:28:25,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-22 22:28:25,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-22 22:28:25,517 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-11-22 22:28:25,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:28:25,517 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 22:28:25,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-22 22:28:25,517 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-22 22:28:25,517 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-22 22:28:25,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-22 22:28:25,548 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-22 22:28:25,548 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-22 22:28:25,548 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-22 22:28:25,548 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-22 22:28:25,548 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-22 22:28:25,548 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-22 22:28:25,549 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2018-11-22 22:28:25,549 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2018-11-22 22:28:25,549 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 11 22) the Hoare annotation is: true [2018-11-22 22:28:25,549 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 11 22) no Hoare annotation was computed. [2018-11-22 22:28:25,549 INFO L448 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2018-11-22 22:28:25,549 INFO L448 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-11-22 22:28:25,549 INFO L448 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2018-11-22 22:28:25,549 INFO L448 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2018-11-22 22:28:25,549 INFO L444 ceAbstractionStarter]: At program point L16-2(lines 16 20) the Hoare annotation is: (and (<= main_~x~0 2147483647) (<= main_~y~0 2147483647)) [2018-11-22 22:28:25,550 INFO L448 ceAbstractionStarter]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2018-11-22 22:28:25,550 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 11 22) no Hoare annotation was computed. [2018-11-22 22:28:25,550 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2018-11-22 22:28:25,550 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2018-11-22 22:28:25,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 10:28:25 BoogieIcfgContainer [2018-11-22 22:28:25,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-22 22:28:25,558 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 22:28:25,559 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 22:28:25,559 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 22:28:25,559 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:28:24" (3/4) ... [2018-11-22 22:28:25,561 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-22 22:28:25,564 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-22 22:28:25,565 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-22 22:28:25,567 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-22 22:28:25,568 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-22 22:28:25,568 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-22 22:28:25,593 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ac2dd970-d054-4228-80c5-e4981121d6cc/bin-2019/utaipan/witness.graphml [2018-11-22 22:28:25,593 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 22:28:25,594 INFO L168 Benchmark]: Toolchain (without parser) took 1272.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 959.2 MB in the beginning and 1.0 GB in the end (delta: -61.9 MB). Peak memory consumption was 69.7 MB. Max. memory is 11.5 GB. [2018-11-22 22:28:25,594 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 22:28:25,595 INFO L168 Benchmark]: CACSL2BoogieTranslator took 138.13 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-22 22:28:25,595 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.20 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 22:28:25,595 INFO L168 Benchmark]: Boogie Preprocessor took 13.31 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-22 22:28:25,596 INFO L168 Benchmark]: RCFGBuilder took 164.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -173.8 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2018-11-22 22:28:25,596 INFO L168 Benchmark]: TraceAbstraction took 907.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 95.8 MB). Peak memory consumption was 95.8 MB. Max. memory is 11.5 GB. [2018-11-22 22:28:25,597 INFO L168 Benchmark]: Witness Printer took 34.63 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-22 22:28:25,599 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 138.13 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 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 12.20 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.31 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 164.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -173.8 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 907.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 95.8 MB). Peak memory consumption was 95.8 MB. Max. memory is 11.5 GB. * Witness Printer took 34.63 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: 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: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: x <= 2147483647 && y <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 4 error locations. SAFE Result, 0.8s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 56 SDtfs, 34 SDslu, 53 SDs, 0 SdLazy, 65 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 11 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 33 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 1762 SizeOfPredicates, 3 NumberOfNonLiveVariables, 39 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 4/14 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...