./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.01_true-termination_true-no-overflow.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_b7d1e3ae-0190-4cb1-9725-89f80773ad0c/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b7d1e3ae-0190-4cb1-9725-89f80773ad0c/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b7d1e3ae-0190-4cb1-9725-89f80773ad0c/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b7d1e3ae-0190-4cb1-9725-89f80773ad0c/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.01_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b7d1e3ae-0190-4cb1-9725-89f80773ad0c/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b7d1e3ae-0190-4cb1-9725-89f80773ad0c/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 05602efd0716c9bc46b30aae12cb2e2448644d24 ........................................................................................................................................................................................................................................................................................................................................................................................ 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 15:39:02,297 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 15:39:02,298 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 15:39:02,305 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 15:39:02,305 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 15:39:02,306 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 15:39:02,307 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 15:39:02,308 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 15:39:02,309 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 15:39:02,309 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 15:39:02,310 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 15:39:02,310 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 15:39:02,311 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 15:39:02,312 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 15:39:02,313 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 15:39:02,314 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 15:39:02,314 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 15:39:02,315 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 15:39:02,317 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 15:39:02,318 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 15:39:02,319 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 15:39:02,320 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 15:39:02,321 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 15:39:02,321 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 15:39:02,321 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 15:39:02,322 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 15:39:02,324 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 15:39:02,324 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 15:39:02,325 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 15:39:02,325 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 15:39:02,326 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 15:39:02,326 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 15:39:02,326 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 15:39:02,326 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 15:39:02,327 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 15:39:02,328 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 15:39:02,328 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b7d1e3ae-0190-4cb1-9725-89f80773ad0c/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-11-18 15:39:02,338 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 15:39:02,338 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 15:39:02,338 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 15:39:02,338 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 15:39:02,339 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 15:39:02,339 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 15:39:02,339 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 15:39:02,339 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 15:39:02,339 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 15:39:02,339 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 15:39:02,339 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 15:39:02,339 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 15:39:02,340 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 15:39:02,340 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 15:39:02,340 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 15:39:02,340 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 15:39:02,340 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 15:39:02,341 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 15:39:02,341 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 15:39:02,341 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 15:39:02,341 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 15:39:02,341 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 15:39:02,341 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 15:39:02,341 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 15:39:02,341 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 15:39:02,342 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 15:39:02,342 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 15:39:02,342 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 15:39:02,342 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 15:39:02,342 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 15:39:02,342 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 15:39:02,342 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 15:39:02,342 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 15:39:02,342 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 15:39:02,342 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 15:39:02,342 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 15:39:02,343 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_b7d1e3ae-0190-4cb1-9725-89f80773ad0c/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 -> 05602efd0716c9bc46b30aae12cb2e2448644d24 [2018-11-18 15:39:02,365 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 15:39:02,373 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 15:39:02,375 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 15:39:02,377 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 15:39:02,377 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 15:39:02,377 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b7d1e3ae-0190-4cb1-9725-89f80773ad0c/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.01_true-termination_true-no-overflow.c [2018-11-18 15:39:02,416 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b7d1e3ae-0190-4cb1-9725-89f80773ad0c/bin-2019/utaipan/data/f1aaea775/d21da8709c2947d6b5f1df6848601186/FLAGe827b51ca [2018-11-18 15:39:02,751 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 15:39:02,752 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b7d1e3ae-0190-4cb1-9725-89f80773ad0c/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.01_true-termination_true-no-overflow.c [2018-11-18 15:39:02,756 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b7d1e3ae-0190-4cb1-9725-89f80773ad0c/bin-2019/utaipan/data/f1aaea775/d21da8709c2947d6b5f1df6848601186/FLAGe827b51ca [2018-11-18 15:39:03,179 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b7d1e3ae-0190-4cb1-9725-89f80773ad0c/bin-2019/utaipan/data/f1aaea775/d21da8709c2947d6b5f1df6848601186 [2018-11-18 15:39:03,181 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 15:39:03,182 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 15:39:03,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 15:39:03,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 15:39:03,185 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 15:39:03,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:39:03" (1/1) ... [2018-11-18 15:39:03,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5efa4a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:03, skipping insertion in model container [2018-11-18 15:39:03,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:39:03" (1/1) ... [2018-11-18 15:39:03,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 15:39:03,204 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 15:39:03,299 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:39:03,301 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 15:39:03,310 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:39:03,318 INFO L195 MainTranslator]: Completed translation [2018-11-18 15:39:03,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:03 WrapperNode [2018-11-18 15:39:03,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 15:39:03,319 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 15:39:03,319 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 15:39:03,319 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 15:39:03,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:03" (1/1) ... [2018-11-18 15:39:03,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:03" (1/1) ... [2018-11-18 15:39:03,332 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 15:39:03,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 15:39:03,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 15:39:03,332 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 15:39:03,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:03" (1/1) ... [2018-11-18 15:39:03,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:03" (1/1) ... [2018-11-18 15:39:03,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:03" (1/1) ... [2018-11-18 15:39:03,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:03" (1/1) ... [2018-11-18 15:39:03,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:03" (1/1) ... [2018-11-18 15:39:03,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:03" (1/1) ... [2018-11-18 15:39:03,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:03" (1/1) ... [2018-11-18 15:39:03,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 15:39:03,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 15:39:03,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 15:39:03,344 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 15:39:03,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7d1e3ae-0190-4cb1-9725-89f80773ad0c/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 15:39:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 15:39:03,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 15:39:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 15:39:03,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 15:39:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 15:39:03,411 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 15:39:03,491 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 15:39:03,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:39:03 BoogieIcfgContainer [2018-11-18 15:39:03,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 15:39:03,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 15:39:03,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 15:39:03,494 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 15:39:03,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:39:03" (1/3) ... [2018-11-18 15:39:03,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1192cf4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:39:03, skipping insertion in model container [2018-11-18 15:39:03,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:03" (2/3) ... [2018-11-18 15:39:03,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1192cf4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:39:03, skipping insertion in model container [2018-11-18 15:39:03,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:39:03" (3/3) ... [2018-11-18 15:39:03,497 INFO L112 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex3.01_true-termination_true-no-overflow.c [2018-11-18 15:39:03,502 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 15:39:03,506 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-11-18 15:39:03,514 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-11-18 15:39:03,534 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 15:39:03,534 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 15:39:03,534 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 15:39:03,534 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 15:39:03,534 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 15:39:03,535 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 15:39:03,535 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 15:39:03,535 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 15:39:03,545 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2018-11-18 15:39:03,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-18 15:39:03,548 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:39:03,549 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:39:03,550 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:39:03,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:39:03,553 INFO L82 PathProgramCache]: Analyzing trace with hash 2105155535, now seen corresponding path program 1 times [2018-11-18 15:39:03,554 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 15:39:03,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:39:03,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:39:03,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:39:03,586 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 15:39:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:39:03,658 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 15:39:03,659 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:39:03,659 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 15:39:03,660 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 15:39:03,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 15:39:03,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 15:39:03,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 15:39:03,672 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2018-11-18 15:39:03,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:39:03,741 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2018-11-18 15:39:03,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 15:39:03,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-11-18 15:39:03,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:39:03,748 INFO L225 Difference]: With dead ends: 30 [2018-11-18 15:39:03,748 INFO L226 Difference]: Without dead ends: 16 [2018-11-18 15:39:03,750 INFO L604 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 [2018-11-18 15:39:03,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-18 15:39:03,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2018-11-18 15:39:03,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-18 15:39:03,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-18 15:39:03,771 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2018-11-18 15:39:03,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:39:03,771 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-18 15:39:03,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 15:39:03,771 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-18 15:39:03,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 15:39:03,772 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:39:03,772 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:39:03,772 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:39:03,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:39:03,772 INFO L82 PathProgramCache]: Analyzing trace with hash 835312193, now seen corresponding path program 1 times [2018-11-18 15:39:03,772 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 15:39:03,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:39:03,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:39:03,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:39:03,774 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 15:39:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:39:03,794 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 15:39:03,795 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:39:03,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 15:39:03,795 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 15:39:03,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 15:39:03,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 15:39:03,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 15:39:03,797 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 3 states. [2018-11-18 15:39:03,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:39:03,811 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-11-18 15:39:03,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 15:39:03,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-18 15:39:03,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:39:03,812 INFO L225 Difference]: With dead ends: 14 [2018-11-18 15:39:03,812 INFO L226 Difference]: Without dead ends: 13 [2018-11-18 15:39:03,813 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 15:39:03,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-18 15:39:03,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-18 15:39:03,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-18 15:39:03,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-18 15:39:03,815 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 9 [2018-11-18 15:39:03,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:39:03,815 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-18 15:39:03,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 15:39:03,815 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-18 15:39:03,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 15:39:03,815 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:39:03,815 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:39:03,815 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:39:03,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:39:03,816 INFO L82 PathProgramCache]: Analyzing trace with hash -254933433, now seen corresponding path program 1 times [2018-11-18 15:39:03,816 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 15:39:03,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:39:03,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:39:03,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:39:03,817 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 15:39:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:39:03,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:39:03,859 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:39:03,859 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 15:39:03,859 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2018-11-18 15:39:03,860 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [14], [15], [16], [18], [24], [25], [26] [2018-11-18 15:39:03,880 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 15:39:03,880 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 15:39:03,944 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 15:39:03,945 INFO L272 AbstractInterpreter]: Visited 10 different actions 10 times. Never merged. Never widened. Performed 30 root evaluator evaluations with a maximum evaluation depth of 3. Performed 30 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 6 variables. [2018-11-18 15:39:03,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:39:03,960 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 15:39:03,960 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:39:03,960 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7d1e3ae-0190-4cb1-9725-89f80773ad0c/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 [2018-11-18 15:39:03,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:39:03,966 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 15:39:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:39:03,984 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:39:03,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:39:03,997 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 15:39:04,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:39:04,042 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 15:39:04,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2018-11-18 15:39:04,043 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 15:39:04,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 15:39:04,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 15:39:04,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 15:39:04,044 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2018-11-18 15:39:04,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:39:04,078 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-11-18 15:39:04,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 15:39:04,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-11-18 15:39:04,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:39:04,079 INFO L225 Difference]: With dead ends: 13 [2018-11-18 15:39:04,079 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 15:39:04,080 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 2 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 15:39:04,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 15:39:04,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 15:39:04,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 15:39:04,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 15:39:04,081 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2018-11-18 15:39:04,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:39:04,081 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 15:39:04,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 15:39:04,081 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 15:39:04,081 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 15:39:04,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 15:39:04,102 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 15:39:04,102 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 15:39:04,102 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 15:39:04,102 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 15:39:04,102 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 15:39:04,103 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 15:39:04,103 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 22 32) the Hoare annotation is: true [2018-11-18 15:39:04,103 INFO L425 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2018-11-18 15:39:04,103 INFO L425 ceAbstractionStarter]: For program point L28-1(line 28) no Hoare annotation was computed. [2018-11-18 15:39:04,103 INFO L425 ceAbstractionStarter]: For program point L27-1(lines 27 30) no Hoare annotation was computed. [2018-11-18 15:39:04,103 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 22 32) no Hoare annotation was computed. [2018-11-18 15:39:04,103 INFO L421 ceAbstractionStarter]: At program point L27-3(lines 27 30) the Hoare annotation is: (and (<= main_~z~0 2147483647) (<= 0 (+ main_~x~0 2147483648)) (<= main_~y~0 2147483647)) [2018-11-18 15:39:04,103 INFO L425 ceAbstractionStarter]: For program point L27-4(lines 27 30) no Hoare annotation was computed. [2018-11-18 15:39:04,103 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2018-11-18 15:39:04,104 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 22 32) no Hoare annotation was computed. [2018-11-18 15:39:04,104 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2018-11-18 15:39:04,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 03:39:04 BoogieIcfgContainer [2018-11-18 15:39:04,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 15:39:04,113 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 15:39:04,113 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 15:39:04,113 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 15:39:04,113 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:39:03" (3/4) ... [2018-11-18 15:39:04,116 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 15:39:04,119 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 15:39:04,120 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 15:39:04,122 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 15:39:04,123 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-18 15:39:04,123 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 15:39:04,148 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b7d1e3ae-0190-4cb1-9725-89f80773ad0c/bin-2019/utaipan/witness.graphml [2018-11-18 15:39:04,148 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 15:39:04,149 INFO L168 Benchmark]: Toolchain (without parser) took 967.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -105.6 MB). Peak memory consumption was 42.3 MB. Max. memory is 11.5 GB. [2018-11-18 15:39:04,150 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 15:39:04,150 INFO L168 Benchmark]: CACSL2BoogieTranslator took 136.17 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 15:39:04,150 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.07 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 15:39:04,151 INFO L168 Benchmark]: Boogie Preprocessor took 11.25 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 15:39:04,151 INFO L168 Benchmark]: RCFGBuilder took 148.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -186.1 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. [2018-11-18 15:39:04,151 INFO L168 Benchmark]: TraceAbstraction took 620.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 63.9 MB). Peak memory consumption was 63.9 MB. Max. memory is 11.5 GB. [2018-11-18 15:39:04,152 INFO L168 Benchmark]: Witness Printer took 35.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2018-11-18 15:39:04,153 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 136.17 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.07 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.25 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 148.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -186.1 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 620.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 63.9 MB). Peak memory consumption was 63.9 MB. Max. memory is 11.5 GB. * Witness Printer took 35.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (z <= 2147483647 && 0 <= x + 2147483648) && y <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 16 locations, 2 error locations. SAFE Result, 0.5s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 13 SDslu, 37 SDs, 0 SdLazy, 23 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 16 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 1108 SizeOfPredicates, 4 NumberOfNonLiveVariables, 33 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/9 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...