./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2_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_9ddca4ae-5d40-4536-9ef1-1acc19dc41e8/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9ddca4ae-5d40-4536-9ef1-1acc19dc41e8/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9ddca4ae-5d40-4536-9ef1-1acc19dc41e8/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9ddca4ae-5d40-4536-9ef1-1acc19dc41e8/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_9ddca4ae-5d40-4536-9ef1-1acc19dc41e8/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9ddca4ae-5d40-4536-9ef1-1acc19dc41e8/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 ff3652fa62b489d4e6a4a85c8349c06d13bd2232 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 17:47:33,332 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:47:33,333 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:47:33,339 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:47:33,340 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:47:33,340 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:47:33,341 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:47:33,342 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:47:33,344 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:47:33,344 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:47:33,345 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:47:33,345 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:47:33,346 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:47:33,346 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:47:33,347 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:47:33,347 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:47:33,348 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:47:33,349 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:47:33,351 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:47:33,352 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:47:33,353 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:47:33,353 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:47:33,355 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:47:33,355 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:47:33,355 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:47:33,356 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:47:33,356 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:47:33,357 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:47:33,358 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:47:33,358 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:47:33,358 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:47:33,359 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:47:33,359 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:47:33,359 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:47:33,360 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:47:33,360 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:47:33,361 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9ddca4ae-5d40-4536-9ef1-1acc19dc41e8/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-11-18 17:47:33,371 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:47:33,371 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:47:33,371 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 17:47:33,372 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 17:47:33,372 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 17:47:33,372 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 17:47:33,372 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 17:47:33,372 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 17:47:33,372 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 17:47:33,373 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 17:47:33,373 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 17:47:33,373 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 17:47:33,373 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 17:47:33,374 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:47:33,374 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 17:47:33,374 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 17:47:33,374 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:47:33,375 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 17:47:33,375 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 17:47:33,375 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 17:47:33,376 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 17:47:33,376 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 17:47:33,376 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:47:33,376 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 17:47:33,377 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:47:33,377 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:47:33,377 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 17:47:33,377 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 17:47:33,377 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:47:33,377 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:47:33,377 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 17:47:33,378 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 17:47:33,378 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 17:47:33,378 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 17:47:33,378 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 17:47:33,378 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 17:47:33,378 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_9ddca4ae-5d40-4536-9ef1-1acc19dc41e8/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 -> ff3652fa62b489d4e6a4a85c8349c06d13bd2232 [2018-11-18 17:47:33,405 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:47:33,413 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:47:33,416 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:47:33,417 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:47:33,417 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:47:33,418 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9ddca4ae-5d40-4536-9ef1-1acc19dc41e8/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c [2018-11-18 17:47:33,453 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9ddca4ae-5d40-4536-9ef1-1acc19dc41e8/bin-2019/utaipan/data/faf823d47/a9ddc4ca573a49279200627a85341a9e/FLAG591dd9a73 [2018-11-18 17:47:33,848 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:47:33,848 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9ddca4ae-5d40-4536-9ef1-1acc19dc41e8/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c [2018-11-18 17:47:33,852 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9ddca4ae-5d40-4536-9ef1-1acc19dc41e8/bin-2019/utaipan/data/faf823d47/a9ddc4ca573a49279200627a85341a9e/FLAG591dd9a73 [2018-11-18 17:47:33,862 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9ddca4ae-5d40-4536-9ef1-1acc19dc41e8/bin-2019/utaipan/data/faf823d47/a9ddc4ca573a49279200627a85341a9e [2018-11-18 17:47:33,865 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:47:33,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 17:47:33,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:47:33,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:47:33,868 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:47:33,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:47:33" (1/1) ... [2018-11-18 17:47:33,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cfef79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:47:33, skipping insertion in model container [2018-11-18 17:47:33,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:47:33" (1/1) ... [2018-11-18 17:47:33,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:47:33,887 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:47:33,990 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:47:33,993 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:47:34,001 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:47:34,009 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:47:34,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:47:34 WrapperNode [2018-11-18 17:47:34,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:47:34,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 17:47:34,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 17:47:34,010 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 17:47:34,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:47:34" (1/1) ... [2018-11-18 17:47:34,021 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:47:34" (1/1) ... [2018-11-18 17:47:34,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 17:47:34,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:47:34,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:47:34,027 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:47:34,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:47:34" (1/1) ... [2018-11-18 17:47:34,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:47:34" (1/1) ... [2018-11-18 17:47:34,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:47:34" (1/1) ... [2018-11-18 17:47:34,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:47:34" (1/1) ... [2018-11-18 17:47:34,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:47:34" (1/1) ... [2018-11-18 17:47:34,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:47:34" (1/1) ... [2018-11-18 17:47:34,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:47:34" (1/1) ... [2018-11-18 17:47:34,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:47:34,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:47:34,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:47:34,044 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:47:34,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:47:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9ddca4ae-5d40-4536-9ef1-1acc19dc41e8/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 17:47:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 17:47:34,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 17:47:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:47:34,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:47:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 17:47:34,126 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 17:47:34,233 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:47:34,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:47:34 BoogieIcfgContainer [2018-11-18 17:47:34,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:47:34,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 17:47:34,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 17:47:34,237 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 17:47:34,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:47:33" (1/3) ... [2018-11-18 17:47:34,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1557bfdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:47:34, skipping insertion in model container [2018-11-18 17:47:34,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:47:34" (2/3) ... [2018-11-18 17:47:34,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1557bfdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:47:34, skipping insertion in model container [2018-11-18 17:47:34,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:47:34" (3/3) ... [2018-11-18 17:47:34,240 INFO L112 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c [2018-11-18 17:47:34,246 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 17:47:34,252 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-18 17:47:34,261 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-18 17:47:34,282 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 17:47:34,282 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 17:47:34,282 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 17:47:34,282 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:47:34,282 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:47:34,282 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 17:47:34,283 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:47:34,283 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 17:47:34,295 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-18 17:47:34,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 17:47:34,301 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:47:34,302 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:47:34,304 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:47:34,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:47:34,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1432253197, now seen corresponding path program 1 times [2018-11-18 17:47:34,310 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:47:34,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:47:34,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:47:34,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:47:34,344 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:47:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:47:34,386 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 17:47:34,387 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:47:34,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:47:34,387 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:47:34,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 17:47:34,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 17:47:34,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 17:47:34,401 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2018-11-18 17:47:34,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:47:34,413 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2018-11-18 17:47:34,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 17:47:34,414 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-11-18 17:47:34,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:47:34,421 INFO L225 Difference]: With dead ends: 39 [2018-11-18 17:47:34,421 INFO L226 Difference]: Without dead ends: 17 [2018-11-18 17:47:34,423 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 17:47:34,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-18 17:47:34,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-18 17:47:34,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-18 17:47:34,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-11-18 17:47:34,447 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2018-11-18 17:47:34,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:47:34,447 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-11-18 17:47:34,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 17:47:34,448 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-11-18 17:47:34,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 17:47:34,448 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:47:34,448 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:47:34,449 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:47:34,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:47:34,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1450187957, now seen corresponding path program 1 times [2018-11-18 17:47:34,449 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:47:34,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:47:34,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:47:34,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:47:34,451 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:47:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:47:34,497 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 17:47:34,498 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:47:34,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 17:47:34,498 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:47:34,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:47:34,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:47:34,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:47:34,499 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2018-11-18 17:47:34,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:47:34,573 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2018-11-18 17:47:34,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 17:47:34,573 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-11-18 17:47:34,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:47:34,574 INFO L225 Difference]: With dead ends: 39 [2018-11-18 17:47:34,574 INFO L226 Difference]: Without dead ends: 37 [2018-11-18 17:47:34,575 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 17:47:34,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-18 17:47:34,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2018-11-18 17:47:34,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-18 17:47:34,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2018-11-18 17:47:34,580 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 10 [2018-11-18 17:47:34,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:47:34,580 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2018-11-18 17:47:34,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:47:34,580 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2018-11-18 17:47:34,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 17:47:34,580 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:47:34,581 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:47:34,581 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:47:34,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:47:34,581 INFO L82 PathProgramCache]: Analyzing trace with hash -2006153642, now seen corresponding path program 1 times [2018-11-18 17:47:34,581 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:47:34,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:47:34,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:47:34,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:47:34,583 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:47:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:47:34,604 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 17:47:34,604 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:47:34,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:47:34,604 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:47:34,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 17:47:34,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 17:47:34,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:47:34,605 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 3 states. [2018-11-18 17:47:34,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:47:34,629 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2018-11-18 17:47:34,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 17:47:34,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-18 17:47:34,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:47:34,631 INFO L225 Difference]: With dead ends: 28 [2018-11-18 17:47:34,631 INFO L226 Difference]: Without dead ends: 27 [2018-11-18 17:47:34,631 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 17:47:34,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-18 17:47:34,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-18 17:47:34,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-18 17:47:34,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2018-11-18 17:47:34,635 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 11 [2018-11-18 17:47:34,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:47:34,635 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2018-11-18 17:47:34,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 17:47:34,635 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2018-11-18 17:47:34,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 17:47:34,636 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:47:34,636 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:47:34,636 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:47:34,636 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:47:34,636 INFO L82 PathProgramCache]: Analyzing trace with hash -2006151944, now seen corresponding path program 1 times [2018-11-18 17:47:34,636 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:47:34,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:47:34,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:47:34,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:47:34,638 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:47:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:47:34,653 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 17:47:34,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:47:34,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:47:34,654 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:47:34,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 17:47:34,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 17:47:34,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:47:34,654 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 3 states. [2018-11-18 17:47:34,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:47:34,681 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2018-11-18 17:47:34,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 17:47:34,681 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-18 17:47:34,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:47:34,682 INFO L225 Difference]: With dead ends: 29 [2018-11-18 17:47:34,682 INFO L226 Difference]: Without dead ends: 20 [2018-11-18 17:47:34,682 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 17:47:34,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-18 17:47:34,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2018-11-18 17:47:34,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-18 17:47:34,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-11-18 17:47:34,685 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 11 [2018-11-18 17:47:34,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:47:34,685 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-11-18 17:47:34,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 17:47:34,685 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-11-18 17:47:34,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 17:47:34,685 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:47:34,686 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:47:34,686 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:47:34,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:47:34,686 INFO L82 PathProgramCache]: Analyzing trace with hash -802592061, now seen corresponding path program 1 times [2018-11-18 17:47:34,686 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:47:34,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:47:34,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:47:34,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:47:34,688 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:47:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:47:34,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 17:47:34,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:47:34,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:47:34,709 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:47:34,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 17:47:34,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 17:47:34,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:47:34,710 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 3 states. [2018-11-18 17:47:34,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:47:34,729 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2018-11-18 17:47:34,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 17:47:34,730 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-11-18 17:47:34,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:47:34,730 INFO L225 Difference]: With dead ends: 18 [2018-11-18 17:47:34,731 INFO L226 Difference]: Without dead ends: 17 [2018-11-18 17:47:34,731 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 17:47:34,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-18 17:47:34,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-18 17:47:34,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-18 17:47:34,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-11-18 17:47:34,735 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2018-11-18 17:47:34,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:47:34,735 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-11-18 17:47:34,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 17:47:34,735 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-11-18 17:47:34,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 17:47:34,736 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:47:34,736 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:47:34,736 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:47:34,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:47:34,736 INFO L82 PathProgramCache]: Analyzing trace with hash -802592006, now seen corresponding path program 1 times [2018-11-18 17:47:34,736 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:47:34,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:47:34,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:47:34,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:47:34,738 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:47:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:47:34,770 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 17:47:34,771 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:47:34,771 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 17:47:34,771 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-11-18 17:47:34,773 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [14], [18], [24], [25], [26], [28], [41], [42], [43] [2018-11-18 17:47:34,800 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 17:47:34,800 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 17:47:34,891 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 17:47:34,891 INFO L272 AbstractInterpreter]: Visited 12 different actions 27 times. Merged at 4 different actions 12 times. Never widened. Performed 73 root evaluator evaluations with a maximum evaluation depth of 3. Performed 73 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 4 variables. [2018-11-18 17:47:34,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:47:34,896 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 17:47:34,897 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:47:34,897 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9ddca4ae-5d40-4536-9ef1-1acc19dc41e8/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 17:47:34,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:47:34,904 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 17:47:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:47:34,916 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:47:34,927 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 17:47:34,927 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:47:34,955 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 17:47:34,970 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 17:47:34,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2018-11-18 17:47:34,970 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 17:47:34,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:47:34,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:47:34,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 17:47:34,971 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2018-11-18 17:47:34,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:47:34,986 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-11-18 17:47:34,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 17:47:34,987 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-11-18 17:47:34,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:47:34,987 INFO L225 Difference]: With dead ends: 27 [2018-11-18 17:47:34,987 INFO L226 Difference]: Without dead ends: 26 [2018-11-18 17:47:34,988 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 17:47:34,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-18 17:47:34,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2018-11-18 17:47:34,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-18 17:47:34,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-11-18 17:47:34,991 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 14 [2018-11-18 17:47:34,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:47:34,992 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-11-18 17:47:34,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:47:34,992 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-11-18 17:47:34,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 17:47:34,992 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:47:34,992 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:47:34,993 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:47:34,993 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:47:34,993 INFO L82 PathProgramCache]: Analyzing trace with hash 2000844402, now seen corresponding path program 2 times [2018-11-18 17:47:34,993 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:47:34,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:47:34,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:47:34,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:47:34,995 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:47:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:47:35,026 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:47:35,027 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:47:35,027 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 17:47:35,027 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 17:47:35,027 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 17:47:35,027 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:47:35,027 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9ddca4ae-5d40-4536-9ef1-1acc19dc41e8/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 [2018-11-18 17:47:35,034 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 17:47:35,034 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 17:47:35,040 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2018-11-18 17:47:35,040 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:47:35,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:47:35,051 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-18 17:47:35,051 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:47:35,062 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-18 17:47:35,084 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 17:47:35,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 6 [2018-11-18 17:47:35,085 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 17:47:35,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 17:47:35,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 17:47:35,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-18 17:47:35,085 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 7 states. [2018-11-18 17:47:35,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:47:35,169 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2018-11-18 17:47:35,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 17:47:35,169 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2018-11-18 17:47:35,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:47:35,169 INFO L225 Difference]: With dead ends: 40 [2018-11-18 17:47:35,169 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 17:47:35,170 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-11-18 17:47:35,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 17:47:35,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 17:47:35,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 17:47:35,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 17:47:35,170 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-11-18 17:47:35,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:47:35,171 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 17:47:35,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 17:47:35,171 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 17:47:35,171 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 17:47:35,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 17:47:35,214 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 17:47:35,214 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 17:47:35,214 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 17:47:35,214 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 17:47:35,214 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 17:47:35,214 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 17:47:35,214 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 13 25) no Hoare annotation was computed. [2018-11-18 17:47:35,215 INFO L425 ceAbstractionStarter]: For program point L19-1(lines 19 21) no Hoare annotation was computed. [2018-11-18 17:47:35,215 INFO L425 ceAbstractionStarter]: For program point L17-1(lines 17 23) no Hoare annotation was computed. [2018-11-18 17:47:35,215 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-18 17:47:35,215 INFO L421 ceAbstractionStarter]: At program point L19-3(lines 19 21) the Hoare annotation is: (and (<= main_~x~0 2147483647) (<= 1 main_~y~0) (<= 0 main_~x~0)) [2018-11-18 17:47:35,215 INFO L425 ceAbstractionStarter]: For program point L19-4(lines 19 21) no Hoare annotation was computed. [2018-11-18 17:47:35,215 INFO L421 ceAbstractionStarter]: At program point L17-3(lines 17 23) the Hoare annotation is: (<= main_~x~0 2147483647) [2018-11-18 17:47:35,215 INFO L425 ceAbstractionStarter]: For program point L17-4(lines 17 23) no Hoare annotation was computed. [2018-11-18 17:47:35,215 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 13 25) no Hoare annotation was computed. [2018-11-18 17:47:35,215 INFO L425 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-18 17:47:35,215 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 13 25) the Hoare annotation is: true [2018-11-18 17:47:35,216 INFO L425 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-18 17:47:35,216 INFO L425 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-11-18 17:47:35,216 INFO L425 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-11-18 17:47:35,216 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-18 17:47:35,216 INFO L425 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-18 17:47:35,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 05:47:35 BoogieIcfgContainer [2018-11-18 17:47:35,224 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 17:47:35,224 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 17:47:35,224 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 17:47:35,224 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 17:47:35,225 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:47:34" (3/4) ... [2018-11-18 17:47:35,227 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 17:47:35,230 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 17:47:35,230 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 17:47:35,233 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 17:47:35,233 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-18 17:47:35,233 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 17:47:35,264 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_9ddca4ae-5d40-4536-9ef1-1acc19dc41e8/bin-2019/utaipan/witness.graphml [2018-11-18 17:47:35,264 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 17:47:35,264 INFO L168 Benchmark]: Toolchain (without parser) took 1399.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 959.1 MB in the beginning and 997.3 MB in the end (delta: -38.1 MB). Peak memory consumption was 84.6 MB. Max. memory is 11.5 GB. [2018-11-18 17:47:35,265 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 17:47:35,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 143.41 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-11-18 17:47:35,266 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.20 ms. Allocated memory is still 1.0 GB. Free memory is still 948.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:47:35,266 INFO L168 Benchmark]: Boogie Preprocessor took 16.84 ms. Allocated memory is still 1.0 GB. Free memory was 948.3 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 17:47:35,266 INFO L168 Benchmark]: RCFGBuilder took 189.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -162.9 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-18 17:47:35,267 INFO L168 Benchmark]: TraceAbstraction took 989.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 999.9 MB in the end (delta: 108.6 MB). Peak memory consumption was 108.6 MB. Max. memory is 11.5 GB. [2018-11-18 17:47:35,267 INFO L168 Benchmark]: Witness Printer took 39.72 ms. Allocated memory is still 1.2 GB. Free memory was 999.9 MB in the beginning and 997.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:47:35,270 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 143.41 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.20 ms. Allocated memory is still 1.0 GB. Free memory is still 948.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.84 ms. Allocated memory is still 1.0 GB. Free memory was 948.3 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 189.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -162.9 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 989.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 999.9 MB in the end (delta: 108.6 MB). Peak memory consumption was 108.6 MB. Max. memory is 11.5 GB. * Witness Printer took 39.72 ms. Allocated memory is still 1.2 GB. Free memory was 999.9 MB in the beginning and 997.3 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: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: 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: x <= 2147483647 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (x <= 2147483647 && 1 <= y) && 0 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 4 error locations. SAFE Result, 0.9s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 91 SDtfs, 74 SDslu, 66 SDs, 0 SdLazy, 100 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 17 NumberOfFragments, 17 HoareAnnotationTreeSize, 6 FomulaSimplifications, 134 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 19 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 119 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 4140 SizeOfPredicates, 3 NumberOfNonLiveVariables, 56 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 18/41 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...