./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e3601937-5908-42e5-a16f-e96afc539b9b/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e3601937-5908-42e5-a16f-e96afc539b9b/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e3601937-5908-42e5-a16f-e96afc539b9b/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e3601937-5908-42e5-a16f-e96afc539b9b/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e3601937-5908-42e5-a16f-e96afc539b9b/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e3601937-5908-42e5-a16f-e96afc539b9b/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 0564e568992a96ba006237c1af458e049de52506 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 05:02:19,385 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 05:02:19,386 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 05:02:19,392 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 05:02:19,393 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 05:02:19,393 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 05:02:19,394 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 05:02:19,395 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 05:02:19,397 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 05:02:19,397 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 05:02:19,398 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 05:02:19,398 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 05:02:19,399 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 05:02:19,399 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 05:02:19,400 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 05:02:19,400 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 05:02:19,401 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 05:02:19,401 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 05:02:19,403 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 05:02:19,404 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 05:02:19,405 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 05:02:19,405 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 05:02:19,406 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 05:02:19,406 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 05:02:19,407 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 05:02:19,407 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 05:02:19,407 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 05:02:19,408 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 05:02:19,408 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 05:02:19,409 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 05:02:19,409 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 05:02:19,410 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 05:02:19,410 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 05:02:19,410 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 05:02:19,411 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 05:02:19,412 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 05:02:19,412 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e3601937-5908-42e5-a16f-e96afc539b9b/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-11-10 05:02:19,420 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 05:02:19,420 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 05:02:19,421 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 05:02:19,421 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 05:02:19,421 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 05:02:19,421 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 05:02:19,421 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 05:02:19,421 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 05:02:19,421 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 05:02:19,422 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 05:02:19,422 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 05:02:19,422 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 05:02:19,422 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 05:02:19,423 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 05:02:19,423 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 05:02:19,423 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 05:02:19,423 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 05:02:19,423 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 05:02:19,423 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-10 05:02:19,423 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 05:02:19,423 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 05:02:19,424 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 05:02:19,424 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 05:02:19,424 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 05:02:19,424 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 05:02:19,424 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 05:02:19,424 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 05:02:19,424 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 05:02:19,425 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 05:02:19,425 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 05:02:19,425 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 05:02:19,425 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 05:02:19,425 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 05:02:19,425 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_e3601937-5908-42e5-a16f-e96afc539b9b/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 -> 0564e568992a96ba006237c1af458e049de52506 [2018-11-10 05:02:19,450 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 05:02:19,459 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 05:02:19,462 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 05:02:19,463 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 05:02:19,463 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 05:02:19,464 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e3601937-5908-42e5-a16f-e96afc539b9b/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1_true-termination_true-no-overflow.c [2018-11-10 05:02:19,511 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e3601937-5908-42e5-a16f-e96afc539b9b/bin-2019/utaipan/data/2afbc3353/4c22b74f2f984a2389f4ddebf2284cb1/FLAGbae7f6d42 [2018-11-10 05:02:19,838 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 05:02:19,838 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e3601937-5908-42e5-a16f-e96afc539b9b/sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1_true-termination_true-no-overflow.c [2018-11-10 05:02:19,844 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e3601937-5908-42e5-a16f-e96afc539b9b/bin-2019/utaipan/data/2afbc3353/4c22b74f2f984a2389f4ddebf2284cb1/FLAGbae7f6d42 [2018-11-10 05:02:19,853 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e3601937-5908-42e5-a16f-e96afc539b9b/bin-2019/utaipan/data/2afbc3353/4c22b74f2f984a2389f4ddebf2284cb1 [2018-11-10 05:02:19,855 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 05:02:19,856 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 05:02:19,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 05:02:19,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 05:02:19,860 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 05:02:19,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:02:19" (1/1) ... [2018-11-10 05:02:19,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cd2abbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:02:19, skipping insertion in model container [2018-11-10 05:02:19,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:02:19" (1/1) ... [2018-11-10 05:02:19,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 05:02:19,886 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 05:02:19,986 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:02:19,988 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 05:02:19,999 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:02:20,007 INFO L193 MainTranslator]: Completed translation [2018-11-10 05:02:20,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:02:20 WrapperNode [2018-11-10 05:02:20,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 05:02:20,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 05:02:20,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 05:02:20,008 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 05:02:20,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:02:20" (1/1) ... [2018-11-10 05:02:20,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:02:20" (1/1) ... [2018-11-10 05:02:20,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 05:02:20,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 05:02:20,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 05:02:20,021 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 05:02:20,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:02:20" (1/1) ... [2018-11-10 05:02:20,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:02:20" (1/1) ... [2018-11-10 05:02:20,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:02:20" (1/1) ... [2018-11-10 05:02:20,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:02:20" (1/1) ... [2018-11-10 05:02:20,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:02:20" (1/1) ... [2018-11-10 05:02:20,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:02:20" (1/1) ... [2018-11-10 05:02:20,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:02:20" (1/1) ... [2018-11-10 05:02:20,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 05:02:20,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 05:02:20,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 05:02:20,034 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 05:02:20,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:02:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e3601937-5908-42e5-a16f-e96afc539b9b/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 [2018-11-10 05:02:20,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 05:02:20,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 05:02:20,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 05:02:20,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 05:02:20,105 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 05:02:20,106 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 05:02:20,201 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 05:02:20,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:02:20 BoogieIcfgContainer [2018-11-10 05:02:20,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 05:02:20,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 05:02:20,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 05:02:20,205 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 05:02:20,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:02:19" (1/3) ... [2018-11-10 05:02:20,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1925ce43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:02:20, skipping insertion in model container [2018-11-10 05:02:20,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:02:20" (2/3) ... [2018-11-10 05:02:20,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1925ce43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:02:20, skipping insertion in model container [2018-11-10 05:02:20,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:02:20" (3/3) ... [2018-11-10 05:02:20,208 INFO L112 eAbstractionObserver]: Analyzing ICFG HeizmannHoenickeLeikePodelski-ATVA2013-Fig1_true-termination_true-no-overflow.c [2018-11-10 05:02:20,214 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 05:02:20,218 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-10 05:02:20,227 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-10 05:02:20,250 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 05:02:20,250 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 05:02:20,250 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 05:02:20,250 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 05:02:20,250 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 05:02:20,250 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 05:02:20,250 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 05:02:20,251 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 05:02:20,261 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-10 05:02:20,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-10 05:02:20,264 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:02:20,265 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:02:20,267 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 05:02:20,271 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:02:20,272 INFO L82 PathProgramCache]: Analyzing trace with hash 604672971, now seen corresponding path program 1 times [2018-11-10 05:02:20,274 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 05:02:20,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:02:20,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:02:20,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:02:20,317 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 05:02:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:02:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:02:20,380 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:02:20,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 05:02:20,380 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 05:02:20,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 05:02:20,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 05:02:20,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 05:02:20,396 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2018-11-10 05:02:20,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:02:20,449 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2018-11-10 05:02:20,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 05:02:20,451 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-11-10 05:02:20,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:02:20,457 INFO L225 Difference]: With dead ends: 33 [2018-11-10 05:02:20,457 INFO L226 Difference]: Without dead ends: 19 [2018-11-10 05:02:20,461 INFO L605 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 [2018-11-10 05:02:20,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-10 05:02:20,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2018-11-10 05:02:20,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-10 05:02:20,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-10 05:02:20,484 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8 [2018-11-10 05:02:20,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:02:20,484 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-10 05:02:20,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 05:02:20,484 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-10 05:02:20,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-10 05:02:20,485 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:02:20,485 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:02:20,485 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 05:02:20,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:02:20,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1564992965, now seen corresponding path program 1 times [2018-11-10 05:02:20,485 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 05:02:20,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:02:20,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:02:20,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:02:20,487 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 05:02:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:02:20,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:02:20,519 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:02:20,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 05:02:20,519 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 05:02:20,520 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 05:02:20,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 05:02:20,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 05:02:20,521 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 4 states. [2018-11-10 05:02:20,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:02:20,584 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2018-11-10 05:02:20,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 05:02:20,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-11-10 05:02:20,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:02:20,585 INFO L225 Difference]: With dead ends: 23 [2018-11-10 05:02:20,585 INFO L226 Difference]: Without dead ends: 21 [2018-11-10 05:02:20,585 INFO L605 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 [2018-11-10 05:02:20,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-10 05:02:20,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2018-11-10 05:02:20,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-10 05:02:20,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-11-10 05:02:20,588 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 9 [2018-11-10 05:02:20,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:02:20,588 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-11-10 05:02:20,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 05:02:20,589 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-11-10 05:02:20,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-10 05:02:20,589 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:02:20,589 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:02:20,589 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 05:02:20,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:02:20,590 INFO L82 PathProgramCache]: Analyzing trace with hash 719687367, now seen corresponding path program 1 times [2018-11-10 05:02:20,590 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 05:02:20,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:02:20,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:02:20,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:02:20,592 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 05:02:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:02:20,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:02:20,615 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:02:20,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 05:02:20,615 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 05:02:20,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 05:02:20,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 05:02:20,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 05:02:20,616 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 3 states. [2018-11-10 05:02:20,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:02:20,641 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-11-10 05:02:20,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 05:02:20,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-10 05:02:20,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:02:20,642 INFO L225 Difference]: With dead ends: 20 [2018-11-10 05:02:20,642 INFO L226 Difference]: Without dead ends: 19 [2018-11-10 05:02:20,642 INFO L605 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 [2018-11-10 05:02:20,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-10 05:02:20,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-10 05:02:20,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-10 05:02:20,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-11-10 05:02:20,645 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 11 [2018-11-10 05:02:20,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:02:20,646 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-11-10 05:02:20,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 05:02:20,646 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-10 05:02:20,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-10 05:02:20,646 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:02:20,646 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:02:20,646 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 05:02:20,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:02:20,647 INFO L82 PathProgramCache]: Analyzing trace with hash -270353407, now seen corresponding path program 1 times [2018-11-10 05:02:20,647 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 05:02:20,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:02:20,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:02:20,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:02:20,648 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 05:02:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:02:20,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:02:20,703 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:02:20,703 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 05:02:20,704 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-11-10 05:02:20,705 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [14], [15], [16], [18], [20], [22], [28], [29], [30] [2018-11-10 05:02:20,738 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 05:02:20,738 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 05:02:20,903 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-10 05:02:20,904 INFO L272 AbstractInterpreter]: Visited 12 different actions 63 times. Merged at 6 different actions 44 times. Widened at 1 different actions 4 times. Found 1 fixpoints after 1 different actions. Largest state had 3 variables. [2018-11-10 05:02:20,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:02:20,909 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-10 05:02:20,946 INFO L219 lantSequenceWeakener]: Could never weaken! [2018-11-10 05:02:20,946 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-10 05:02:21,009 INFO L415 sIntCurrentIteration]: We unified 13 AI predicates to 13 [2018-11-10 05:02:21,009 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-10 05:02:21,009 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 05:02:21,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2018-11-10 05:02:21,010 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 05:02:21,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 05:02:21,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 05:02:21,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-10 05:02:21,010 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2018-11-10 05:02:21,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:02:21,120 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-10 05:02:21,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 05:02:21,120 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-11-10 05:02:21,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:02:21,121 INFO L225 Difference]: With dead ends: 19 [2018-11-10 05:02:21,121 INFO L226 Difference]: Without dead ends: 17 [2018-11-10 05:02:21,121 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-10 05:02:21,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-10 05:02:21,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-10 05:02:21,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-10 05:02:21,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-11-10 05:02:21,125 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-11-10 05:02:21,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:02:21,126 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-11-10 05:02:21,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 05:02:21,126 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-10 05:02:21,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 05:02:21,126 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:02:21,126 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:02:21,127 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 05:02:21,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:02:21,127 INFO L82 PathProgramCache]: Analyzing trace with hash -2111584829, now seen corresponding path program 1 times [2018-11-10 05:02:21,127 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 05:02:21,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:02:21,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:02:21,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:02:21,129 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 05:02:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:02:21,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:02:21,160 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:02:21,160 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 05:02:21,160 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-11-10 05:02:21,160 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [14], [16], [18], [19], [20], [22], [28], [29], [30] [2018-11-10 05:02:21,161 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 05:02:21,162 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 05:02:21,219 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-10 05:02:21,219 INFO L272 AbstractInterpreter]: Visited 12 different actions 63 times. Merged at 6 different actions 44 times. Widened at 1 different actions 4 times. Found 1 fixpoints after 1 different actions. Largest state had 3 variables. [2018-11-10 05:02:21,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:02:21,222 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-10 05:02:21,222 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:02:21,222 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e3601937-5908-42e5-a16f-e96afc539b9b/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 [2018-11-10 05:02:21,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:02:21,232 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 05:02:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:02:21,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:02:21,254 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:02:21,255 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 05:02:21,285 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:02:21,301 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 05:02:21,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2018-11-10 05:02:21,301 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 05:02:21,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 05:02:21,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 05:02:21,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-10 05:02:21,302 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 4 states. [2018-11-10 05:02:21,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:02:21,325 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-11-10 05:02:21,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 05:02:21,325 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-11-10 05:02:21,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:02:21,326 INFO L225 Difference]: With dead ends: 25 [2018-11-10 05:02:21,326 INFO L226 Difference]: Without dead ends: 24 [2018-11-10 05:02:21,326 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-10 05:02:21,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-10 05:02:21,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2018-11-10 05:02:21,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-10 05:02:21,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-11-10 05:02:21,329 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 16 [2018-11-10 05:02:21,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:02:21,329 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-11-10 05:02:21,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 05:02:21,329 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-11-10 05:02:21,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-10 05:02:21,330 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:02:21,330 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-10 05:02:21,330 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 05:02:21,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:02:21,330 INFO L82 PathProgramCache]: Analyzing trace with hash -305965063, now seen corresponding path program 2 times [2018-11-10 05:02:21,331 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 05:02:21,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:02:21,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:02:21,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:02:21,332 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 05:02:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:02:21,372 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:02:21,372 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:02:21,372 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 05:02:21,372 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 05:02:21,373 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 05:02:21,373 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:02:21,373 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e3601937-5908-42e5-a16f-e96afc539b9b/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 05:02:21,384 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 05:02:21,384 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-10 05:02:21,392 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-10 05:02:21,393 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:02:21,394 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:02:21,465 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:02:21,466 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 05:02:21,538 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:02:21,563 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 05:02:21,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2018-11-10 05:02:21,564 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 05:02:21,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 05:02:21,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 05:02:21,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2018-11-10 05:02:21,565 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 10 states. [2018-11-10 05:02:21,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:02:21,722 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2018-11-10 05:02:21,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 05:02:21,722 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-11-10 05:02:21,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:02:21,723 INFO L225 Difference]: With dead ends: 32 [2018-11-10 05:02:21,723 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 05:02:21,723 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=178, Invalid=374, Unknown=0, NotChecked=0, Total=552 [2018-11-10 05:02:21,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 05:02:21,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 05:02:21,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 05:02:21,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 05:02:21,724 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2018-11-10 05:02:21,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:02:21,725 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 05:02:21,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 05:02:21,725 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 05:02:21,725 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 05:02:21,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 05:02:21,838 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 05:02:21,838 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 05:02:21,838 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 05:02:21,838 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 05:02:21,838 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 05:02:21,838 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 05:02:21,838 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 13 22) the Hoare annotation is: true [2018-11-10 05:02:21,838 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 13 22) no Hoare annotation was computed. [2018-11-10 05:02:21,838 INFO L425 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2018-11-10 05:02:21,839 INFO L425 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-11-10 05:02:21,839 INFO L425 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2018-11-10 05:02:21,839 INFO L425 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2018-11-10 05:02:21,839 INFO L425 ceAbstractionStarter]: For program point L17-1(lines 17 20) no Hoare annotation was computed. [2018-11-10 05:02:21,839 INFO L421 ceAbstractionStarter]: At program point L17-3(lines 17 20) the Hoare annotation is: (let ((.cse3 (* 2 main_~x~0)) (.cse1 (* 2 main_~y~0))) (let ((.cse0 (<= 46 .cse1)) (.cse2 (<= 0 (+ .cse3 4294967294)))) (or (and .cse0 (<= main_~y~0 23) (<= main_~x~0 (+ main_~y~0 2147483624)) (<= 0 (+ main_~x~0 main_~y~0 2147483625))) (and .cse0 (<= .cse1 4294967294) .cse2 (<= (+ main_~x~0 main_~y~0) 2147483625)) (and (<= main_~y~0 24) .cse0 .cse2 (<= .cse3 4294967248))))) [2018-11-10 05:02:21,839 INFO L425 ceAbstractionStarter]: For program point L17-4(lines 17 20) no Hoare annotation was computed. [2018-11-10 05:02:21,839 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 13 22) no Hoare annotation was computed. [2018-11-10 05:02:21,840 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2018-11-10 05:02:21,840 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2018-11-10 05:02:21,840 INFO L425 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2018-11-10 05:02:21,840 INFO L425 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2018-11-10 05:02:21,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 05:02:21 BoogieIcfgContainer [2018-11-10 05:02:21,848 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 05:02:21,848 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 05:02:21,848 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 05:02:21,849 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 05:02:21,849 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:02:20" (3/4) ... [2018-11-10 05:02:21,851 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 05:02:21,855 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 05:02:21,855 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 05:02:21,857 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-10 05:02:21,858 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-10 05:02:21,858 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 05:02:21,882 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e3601937-5908-42e5-a16f-e96afc539b9b/bin-2019/utaipan/witness.graphml [2018-11-10 05:02:21,882 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 05:02:21,883 INFO L168 Benchmark]: Toolchain (without parser) took 2027.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 960.3 MB in the beginning and 928.2 MB in the end (delta: 32.1 MB). Peak memory consumption was 167.4 MB. Max. memory is 11.5 GB. [2018-11-10 05:02:21,884 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:02:21,884 INFO L168 Benchmark]: CACSL2BoogieTranslator took 151.04 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 948.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-11-10 05:02:21,885 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.98 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:02:21,885 INFO L168 Benchmark]: Boogie Preprocessor took 12.63 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 05:02:21,885 INFO L168 Benchmark]: RCFGBuilder took 167.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -179.8 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2018-11-10 05:02:21,886 INFO L168 Benchmark]: TraceAbstraction took 1646.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 930.9 MB in the end (delta: 194.7 MB). Peak memory consumption was 194.7 MB. Max. memory is 11.5 GB. [2018-11-10 05:02:21,886 INFO L168 Benchmark]: Witness Printer took 34.21 ms. Allocated memory is still 1.2 GB. Free memory was 930.9 MB in the beginning and 928.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 05:02:21,889 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 151.04 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 948.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.98 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.63 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 167.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -179.8 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1646.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 930.9 MB in the end (delta: 194.7 MB). Peak memory consumption was 194.7 MB. Max. memory is 11.5 GB. * Witness Printer took 34.21 ms. Allocated memory is still 1.2 GB. Free memory was 930.9 MB in the beginning and 928.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((46 <= 2 * y && y <= 23) && x <= y + 2147483624) && 0 <= x + y + 2147483625) || (((46 <= 2 * y && 2 * y <= 4294967294) && 0 <= 2 * x + 4294967294) && x + y <= 2147483625)) || (((y <= 24 && 46 <= 2 * y) && 0 <= 2 * x + 4294967294) && 2 * x <= 4294967248) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 4 error locations. SAFE Result, 1.5s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 55 SDtfs, 48 SDslu, 79 SDs, 0 SdLazy, 125 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 112 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.15384615384615385 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 9 NumberOfFragments, 69 HoareAnnotationTreeSize, 5 FomulaSimplifications, 110 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 94 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 146 ConstructedInterpolants, 0 QuantifiedInterpolants, 7236 SizeOfPredicates, 4 NumberOfNonLiveVariables, 76 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 0/66 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...