./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted/McCarthy91_Recursion_true-no-overflow_true-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2d96f718-d57a-42bc-8f8a-e16fce8b7980/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2d96f718-d57a-42bc-8f8a-e16fce8b7980/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2d96f718-d57a-42bc-8f8a-e16fce8b7980/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2d96f718-d57a-42bc-8f8a-e16fce8b7980/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/McCarthy91_Recursion_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2d96f718-d57a-42bc-8f8a-e16fce8b7980/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2d96f718-d57a-42bc-8f8a-e16fce8b7980/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 871be16186d4378aec884efd2352a47ca4eb57bc ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 11:59:32,396 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 11:59:32,397 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 11:59:32,404 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 11:59:32,405 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 11:59:32,405 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 11:59:32,406 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 11:59:32,407 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 11:59:32,408 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 11:59:32,409 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 11:59:32,410 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 11:59:32,410 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 11:59:32,411 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 11:59:32,412 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 11:59:32,413 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 11:59:32,413 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 11:59:32,414 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 11:59:32,415 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 11:59:32,417 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 11:59:32,418 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 11:59:32,419 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 11:59:32,420 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 11:59:32,422 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 11:59:32,422 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 11:59:32,423 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 11:59:32,423 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 11:59:32,424 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 11:59:32,424 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 11:59:32,425 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 11:59:32,426 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 11:59:32,426 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 11:59:32,427 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 11:59:32,427 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 11:59:32,427 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 11:59:32,428 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 11:59:32,429 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 11:59:32,429 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2d96f718-d57a-42bc-8f8a-e16fce8b7980/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-11-18 11:59:32,437 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 11:59:32,437 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 11:59:32,438 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 11:59:32,438 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 11:59:32,438 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 11:59:32,438 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 11:59:32,438 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 11:59:32,438 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 11:59:32,438 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 11:59:32,439 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 11:59:32,439 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 11:59:32,439 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 11:59:32,439 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 11:59:32,439 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 11:59:32,440 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 11:59:32,440 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 11:59:32,440 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 11:59:32,440 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 11:59:32,440 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 11:59:32,440 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 11:59:32,440 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 11:59:32,441 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 11:59:32,441 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 11:59:32,441 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 11:59:32,441 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 11:59:32,441 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 11:59:32,441 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 11:59:32,441 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 11:59:32,442 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:59:32,442 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 11:59:32,442 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 11:59:32,442 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 11:59:32,442 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 11:59:32,442 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 11:59:32,442 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 11:59:32,443 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 11:59:32,443 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_2d96f718-d57a-42bc-8f8a-e16fce8b7980/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 -> 871be16186d4378aec884efd2352a47ca4eb57bc [2018-11-18 11:59:32,466 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 11:59:32,476 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 11:59:32,479 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 11:59:32,480 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 11:59:32,480 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 11:59:32,481 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2d96f718-d57a-42bc-8f8a-e16fce8b7980/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted/McCarthy91_Recursion_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-18 11:59:32,523 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2d96f718-d57a-42bc-8f8a-e16fce8b7980/bin-2019/utaipan/data/153c8e0bf/7f8bb6a65f3d48a5b54e947711feb50c/FLAGadf59337f [2018-11-18 11:59:32,878 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 11:59:32,878 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2d96f718-d57a-42bc-8f8a-e16fce8b7980/sv-benchmarks/c/termination-crafted/McCarthy91_Recursion_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-18 11:59:32,885 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2d96f718-d57a-42bc-8f8a-e16fce8b7980/bin-2019/utaipan/data/153c8e0bf/7f8bb6a65f3d48a5b54e947711feb50c/FLAGadf59337f [2018-11-18 11:59:33,294 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2d96f718-d57a-42bc-8f8a-e16fce8b7980/bin-2019/utaipan/data/153c8e0bf/7f8bb6a65f3d48a5b54e947711feb50c [2018-11-18 11:59:33,297 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 11:59:33,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 11:59:33,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 11:59:33,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 11:59:33,301 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 11:59:33,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:59:33" (1/1) ... [2018-11-18 11:59:33,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d28621d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:59:33, skipping insertion in model container [2018-11-18 11:59:33,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:59:33" (1/1) ... [2018-11-18 11:59:33,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 11:59:33,324 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 11:59:33,420 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:59:33,422 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 11:59:33,430 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:59:33,438 INFO L195 MainTranslator]: Completed translation [2018-11-18 11:59:33,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:59:33 WrapperNode [2018-11-18 11:59:33,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 11:59:33,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 11:59:33,439 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 11:59:33,439 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 11:59:33,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:59:33" (1/1) ... [2018-11-18 11:59:33,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:59:33" (1/1) ... [2018-11-18 11:59:33,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 11:59:33,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 11:59:33,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 11:59:33,458 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 11:59:33,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:59:33" (1/1) ... [2018-11-18 11:59:33,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:59:33" (1/1) ... [2018-11-18 11:59:33,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:59:33" (1/1) ... [2018-11-18 11:59:33,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:59:33" (1/1) ... [2018-11-18 11:59:33,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:59:33" (1/1) ... [2018-11-18 11:59:33,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:59:33" (1/1) ... [2018-11-18 11:59:33,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:59:33" (1/1) ... [2018-11-18 11:59:33,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 11:59:33,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 11:59:33,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 11:59:33,475 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 11:59:33,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:59:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d96f718-d57a-42bc-8f8a-e16fce8b7980/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 [2018-11-18 11:59:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 11:59:33,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 11:59:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 11:59:33,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 11:59:33,563 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 11:59:33,563 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 11:59:33,563 INFO L130 BoogieDeclarations]: Found specification of procedure mc91 [2018-11-18 11:59:33,563 INFO L138 BoogieDeclarations]: Found implementation of procedure mc91 [2018-11-18 11:59:33,709 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 11:59:33,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:59:33 BoogieIcfgContainer [2018-11-18 11:59:33,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 11:59:33,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 11:59:33,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 11:59:33,713 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 11:59:33,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:59:33" (1/3) ... [2018-11-18 11:59:33,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509616dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:59:33, skipping insertion in model container [2018-11-18 11:59:33,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:59:33" (2/3) ... [2018-11-18 11:59:33,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509616dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:59:33, skipping insertion in model container [2018-11-18 11:59:33,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:59:33" (3/3) ... [2018-11-18 11:59:33,717 INFO L112 eAbstractionObserver]: Analyzing ICFG McCarthy91_Recursion_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-18 11:59:33,726 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 11:59:33,734 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-18 11:59:33,750 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-18 11:59:33,784 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 11:59:33,784 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 11:59:33,784 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 11:59:33,784 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 11:59:33,784 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 11:59:33,784 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 11:59:33,785 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 11:59:33,785 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 11:59:33,802 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-11-18 11:59:33,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 11:59:33,808 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:59:33,809 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:59:33,811 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:59:33,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:59:33,817 INFO L82 PathProgramCache]: Analyzing trace with hash -946681433, now seen corresponding path program 1 times [2018-11-18 11:59:33,819 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:59:33,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:59:33,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:59:33,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:59:33,871 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:59:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:59:33,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:59:33,956 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:59:33,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:59:33,957 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:59:33,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:59:33,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:59:33,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:59:33,977 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2018-11-18 11:59:34,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:59:34,014 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2018-11-18 11:59:34,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:59:34,016 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-18 11:59:34,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:59:34,028 INFO L225 Difference]: With dead ends: 29 [2018-11-18 11:59:34,028 INFO L226 Difference]: Without dead ends: 23 [2018-11-18 11:59:34,031 INFO L604 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 [2018-11-18 11:59:34,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-18 11:59:34,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2018-11-18 11:59:34,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-18 11:59:34,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-11-18 11:59:34,062 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 9 [2018-11-18 11:59:34,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:59:34,063 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-11-18 11:59:34,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:59:34,063 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-11-18 11:59:34,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 11:59:34,064 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:59:34,064 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:59:34,064 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:59:34,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:59:34,065 INFO L82 PathProgramCache]: Analyzing trace with hash -946681593, now seen corresponding path program 1 times [2018-11-18 11:59:34,065 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:59:34,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:59:34,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:59:34,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:59:34,066 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:59:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:59:34,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:59:34,123 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:59:34,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:59:34,124 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:59:34,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:59:34,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:59:34,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:59:34,125 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 5 states. [2018-11-18 11:59:34,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:59:34,195 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2018-11-18 11:59:34,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 11:59:34,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-11-18 11:59:34,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:59:34,197 INFO L225 Difference]: With dead ends: 38 [2018-11-18 11:59:34,197 INFO L226 Difference]: Without dead ends: 34 [2018-11-18 11:59:34,198 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 11:59:34,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-18 11:59:34,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2018-11-18 11:59:34,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-18 11:59:34,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2018-11-18 11:59:34,205 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 9 [2018-11-18 11:59:34,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:59:34,206 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2018-11-18 11:59:34,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:59:34,206 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2018-11-18 11:59:34,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 11:59:34,207 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:59:34,207 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:59:34,207 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:59:34,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:59:34,208 INFO L82 PathProgramCache]: Analyzing trace with hash 717646699, now seen corresponding path program 1 times [2018-11-18 11:59:34,208 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:59:34,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:59:34,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:59:34,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:59:34,209 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:59:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:59:34,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:59:34,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:59:34,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:59:34,252 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:59:34,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:59:34,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:59:34,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:59:34,253 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2018-11-18 11:59:34,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:59:34,381 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2018-11-18 11:59:34,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 11:59:34,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-11-18 11:59:34,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:59:34,383 INFO L225 Difference]: With dead ends: 47 [2018-11-18 11:59:34,383 INFO L226 Difference]: Without dead ends: 46 [2018-11-18 11:59:34,384 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 11:59:34,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-18 11:59:34,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2018-11-18 11:59:34,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-18 11:59:34,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2018-11-18 11:59:34,393 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 10 [2018-11-18 11:59:34,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:59:34,393 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2018-11-18 11:59:34,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:59:34,394 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2018-11-18 11:59:34,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 11:59:34,394 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:59:34,394 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:59:34,394 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:59:34,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:59:34,394 INFO L82 PathProgramCache]: Analyzing trace with hash 717641734, now seen corresponding path program 1 times [2018-11-18 11:59:34,394 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:59:34,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:59:34,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:59:34,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:59:34,395 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:59:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:59:34,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:59:34,405 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:59:34,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:59:34,405 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:59:34,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:59:34,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:59:34,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:59:34,406 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 3 states. [2018-11-18 11:59:34,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:59:34,419 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2018-11-18 11:59:34,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:59:34,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-18 11:59:34,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:59:34,421 INFO L225 Difference]: With dead ends: 46 [2018-11-18 11:59:34,421 INFO L226 Difference]: Without dead ends: 43 [2018-11-18 11:59:34,422 INFO L604 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 [2018-11-18 11:59:34,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-18 11:59:34,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-11-18 11:59:34,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-18 11:59:34,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2018-11-18 11:59:34,430 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 10 [2018-11-18 11:59:34,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:59:34,430 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2018-11-18 11:59:34,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:59:34,431 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2018-11-18 11:59:34,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 11:59:34,431 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:59:34,431 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:59:34,431 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:59:34,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:59:34,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1100578997, now seen corresponding path program 1 times [2018-11-18 11:59:34,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:59:34,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:59:34,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:59:34,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:59:34,433 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:59:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:59:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:59:34,472 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:59:34,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:59:34,472 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:59:34,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:59:34,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:59:34,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:59:34,473 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 5 states. [2018-11-18 11:59:34,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:59:34,571 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2018-11-18 11:59:34,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 11:59:34,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-18 11:59:34,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:59:34,573 INFO L225 Difference]: With dead ends: 59 [2018-11-18 11:59:34,573 INFO L226 Difference]: Without dead ends: 58 [2018-11-18 11:59:34,573 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-18 11:59:34,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-11-18 11:59:34,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2018-11-18 11:59:34,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-18 11:59:34,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2018-11-18 11:59:34,582 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 14 [2018-11-18 11:59:34,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:59:34,582 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2018-11-18 11:59:34,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:59:34,583 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2018-11-18 11:59:34,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 11:59:34,583 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:59:34,583 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:59:34,583 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:59:34,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:59:34,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1291625796, now seen corresponding path program 1 times [2018-11-18 11:59:34,584 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:59:34,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:59:34,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:59:34,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:59:34,586 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:59:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:59:34,615 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 11:59:34,615 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:59:34,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:59:34,615 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:59:34,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:59:34,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:59:34,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:59:34,616 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand 5 states. [2018-11-18 11:59:34,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:59:34,718 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2018-11-18 11:59:34,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 11:59:34,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-11-18 11:59:34,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:59:34,719 INFO L225 Difference]: With dead ends: 56 [2018-11-18 11:59:34,719 INFO L226 Difference]: Without dead ends: 55 [2018-11-18 11:59:34,720 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-18 11:59:34,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-11-18 11:59:34,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2018-11-18 11:59:34,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-18 11:59:34,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2018-11-18 11:59:34,727 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 22 [2018-11-18 11:59:34,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:59:34,727 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2018-11-18 11:59:34,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:59:34,727 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2018-11-18 11:59:34,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 11:59:34,729 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:59:34,729 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:59:34,729 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:59:34,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:59:34,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1385689002, now seen corresponding path program 1 times [2018-11-18 11:59:34,730 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:59:34,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:59:34,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:59:34,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:59:34,731 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:59:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:59:34,773 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 11:59:34,773 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:59:34,773 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:59:34,773 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:59:34,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:59:34,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:59:34,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:59:34,774 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 5 states. [2018-11-18 11:59:34,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:59:34,835 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2018-11-18 11:59:34,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 11:59:34,836 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-11-18 11:59:34,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:59:34,836 INFO L225 Difference]: With dead ends: 52 [2018-11-18 11:59:34,836 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 11:59:34,837 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-18 11:59:34,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 11:59:34,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 11:59:34,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 11:59:34,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 11:59:34,838 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2018-11-18 11:59:34,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:59:34,838 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 11:59:34,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:59:34,839 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 11:59:34,839 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 11:59:34,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 11:59:34,981 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 11:59:34,982 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 11:59:34,982 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 11:59:34,982 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 11:59:34,982 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 11:59:34,982 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 11:59:34,982 INFO L421 ceAbstractionStarter]: At program point L16(line 16) the Hoare annotation is: (and (<= main_~x~0 2147483647) (<= 0 (+ main_~x~0 2147483648))) [2018-11-18 11:59:34,982 INFO L425 ceAbstractionStarter]: For program point L16-1(line 16) no Hoare annotation was computed. [2018-11-18 11:59:34,983 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 14 17) the Hoare annotation is: true [2018-11-18 11:59:34,983 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 14 17) no Hoare annotation was computed. [2018-11-18 11:59:34,983 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 14 17) no Hoare annotation was computed. [2018-11-18 11:59:34,983 INFO L425 ceAbstractionStarter]: For program point mc91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2018-11-18 11:59:34,983 INFO L425 ceAbstractionStarter]: For program point mc91FINAL(lines 8 12) no Hoare annotation was computed. [2018-11-18 11:59:34,984 INFO L425 ceAbstractionStarter]: For program point L11(line 11) no Hoare annotation was computed. [2018-11-18 11:59:34,984 INFO L425 ceAbstractionStarter]: For program point L10(lines 10 11) no Hoare annotation was computed. [2018-11-18 11:59:34,984 INFO L425 ceAbstractionStarter]: For program point L11-1(line 11) no Hoare annotation was computed. [2018-11-18 11:59:34,984 INFO L425 ceAbstractionStarter]: For program point L10-1(line 10) no Hoare annotation was computed. [2018-11-18 11:59:34,984 INFO L421 ceAbstractionStarter]: At program point L11-2(line 11) the Hoare annotation is: (or (< 2147483647 |mc91_#in~n|) (< (+ |mc91_#in~n| 2147483648) 0) (and (<= mc91_~n 100) (<= 0 (+ mc91_~n 2147483648)))) [2018-11-18 11:59:34,985 INFO L425 ceAbstractionStarter]: For program point L10-2(line 10) no Hoare annotation was computed. [2018-11-18 11:59:34,985 INFO L425 ceAbstractionStarter]: For program point L11-3(line 11) no Hoare annotation was computed. [2018-11-18 11:59:34,985 INFO L421 ceAbstractionStarter]: At program point L11-4(line 11) the Hoare annotation is: (or (< 2147483647 |mc91_#in~n|) (< (+ |mc91_#in~n| 2147483648) 0) (and (<= 0 (+ |mc91_#t~ret0| 2147483648)) (<= mc91_~n 100) (<= 0 (+ mc91_~n 2147483648)) (<= |mc91_#t~ret0| 2147483647))) [2018-11-18 11:59:34,985 INFO L428 ceAbstractionStarter]: At program point mc91ENTRY(lines 8 12) the Hoare annotation is: true [2018-11-18 11:59:34,985 INFO L425 ceAbstractionStarter]: For program point L11-5(line 11) no Hoare annotation was computed. [2018-11-18 11:59:34,985 INFO L425 ceAbstractionStarter]: For program point mc91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2018-11-18 11:59:34,985 INFO L425 ceAbstractionStarter]: For program point mc91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 11) no Hoare annotation was computed. [2018-11-18 11:59:34,985 INFO L425 ceAbstractionStarter]: For program point mc91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 11) no Hoare annotation was computed. [2018-11-18 11:59:34,986 INFO L425 ceAbstractionStarter]: For program point mc91EXIT(lines 8 12) no Hoare annotation was computed. [2018-11-18 11:59:34,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 11:59:34 BoogieIcfgContainer [2018-11-18 11:59:34,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 11:59:34,990 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 11:59:34,990 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 11:59:34,990 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 11:59:34,990 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:59:33" (3/4) ... [2018-11-18 11:59:34,994 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 11:59:35,001 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 11:59:35,001 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 11:59:35,001 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure mc91 [2018-11-18 11:59:35,005 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-18 11:59:35,006 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-18 11:59:35,006 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 11:59:35,034 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_2d96f718-d57a-42bc-8f8a-e16fce8b7980/bin-2019/utaipan/witness.graphml [2018-11-18 11:59:35,035 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 11:59:35,035 INFO L168 Benchmark]: Toolchain (without parser) took 1738.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 961.3 MB in the beginning and 1.0 GB in the end (delta: -47.7 MB). Peak memory consumption was 100.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:59:35,036 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 982.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:59:35,037 INFO L168 Benchmark]: CACSL2BoogieTranslator took 140.59 ms. Allocated memory is still 1.0 GB. Free memory was 961.3 MB in the beginning and 950.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:59:35,037 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.89 ms. Allocated memory is still 1.0 GB. Free memory is still 950.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:59:35,037 INFO L168 Benchmark]: Boogie Preprocessor took 15.84 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 945.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 11:59:35,038 INFO L168 Benchmark]: RCFGBuilder took 235.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -185.6 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2018-11-18 11:59:35,038 INFO L168 Benchmark]: TraceAbstraction took 1279.37 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: 115.3 MB). Peak memory consumption was 115.3 MB. Max. memory is 11.5 GB. [2018-11-18 11:59:35,039 INFO L168 Benchmark]: Witness Printer took 45.12 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2018-11-18 11:59:35,041 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 982.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 140.59 ms. Allocated memory is still 1.0 GB. Free memory was 961.3 MB in the beginning and 950.5 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 18.89 ms. Allocated memory is still 1.0 GB. Free memory is still 950.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.84 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 945.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 235.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -185.6 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1279.37 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: 115.3 MB). Peak memory consumption was 115.3 MB. Max. memory is 11.5 GB. * Witness Printer took 45.12 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 11]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 11]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 4 error locations. SAFE Result, 1.2s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 152 SDtfs, 121 SDslu, 227 SDs, 0 SdLazy, 201 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 7 MinimizatonAttempts, 26 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 32 PreInvPairs, 32 NumberOfFragments, 62 HoareAnnotationTreeSize, 32 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 94 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2444 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 17/17 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...