./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2-modified1000_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_97763ee5-5f49-4d61-b971-2086809e86c0/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_97763ee5-5f49-4d61-b971-2086809e86c0/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_97763ee5-5f49-4d61-b971-2086809e86c0/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_97763ee5-5f49-4d61-b971-2086809e86c0/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2-modified1000_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_97763ee5-5f49-4d61-b971-2086809e86c0/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_97763ee5-5f49-4d61-b971-2086809e86c0/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 2b2cc94eb5b8374a9980482fd0dfec59d6d2cf62 ................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 05:42:47,481 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:42:47,482 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:42:47,491 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:42:47,492 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:42:47,492 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:42:47,494 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:42:47,495 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:42:47,497 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:42:47,498 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:42:47,499 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:42:47,499 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:42:47,500 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:42:47,501 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:42:47,502 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:42:47,503 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:42:47,503 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:42:47,505 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:42:47,507 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:42:47,508 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:42:47,509 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:42:47,510 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:42:47,512 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:42:47,512 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:42:47,512 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:42:47,513 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:42:47,515 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:42:47,516 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:42:47,516 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:42:47,517 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:42:47,517 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:42:47,518 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 05:42:47,519 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 05:42:47,519 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 05:42:47,520 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 05:42:47,520 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 05:42:47,521 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_97763ee5-5f49-4d61-b971-2086809e86c0/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-10-27 05:42:47,533 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:42:47,533 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:42:47,534 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:42:47,534 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 05:42:47,535 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 05:42:47,535 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 05:42:47,535 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 05:42:47,535 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 05:42:47,535 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 05:42:47,535 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 05:42:47,535 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 05:42:47,536 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:42:47,536 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 05:42:47,536 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:42:47,537 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:42:47,537 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:42:47,537 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:42:47,537 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:42:47,537 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-10-27 05:42:47,537 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:42:47,540 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:42:47,540 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:42:47,540 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:42:47,540 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:42:47,540 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:42:47,540 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:42:47,541 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:42:47,541 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:42:47,541 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:42:47,541 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 05:42:47,541 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:42:47,541 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:42:47,542 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 05:42:47,542 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_97763ee5-5f49-4d61-b971-2086809e86c0/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 -> 2b2cc94eb5b8374a9980482fd0dfec59d6d2cf62 [2018-10-27 05:42:47,569 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:42:47,582 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:42:47,585 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:42:47,587 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:42:47,587 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:42:47,587 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_97763ee5-5f49-4d61-b971-2086809e86c0/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2-modified1000_true-termination_true-no-overflow.c [2018-10-27 05:42:47,638 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_97763ee5-5f49-4d61-b971-2086809e86c0/bin-2019/utaipan/data/ad4917bfc/dcadd0a855ce429a9c00d6c58f26d474/FLAGeaee7df58 [2018-10-27 05:42:47,973 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:42:47,973 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_97763ee5-5f49-4d61-b971-2086809e86c0/sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2-modified1000_true-termination_true-no-overflow.c [2018-10-27 05:42:47,978 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_97763ee5-5f49-4d61-b971-2086809e86c0/bin-2019/utaipan/data/ad4917bfc/dcadd0a855ce429a9c00d6c58f26d474/FLAGeaee7df58 [2018-10-27 05:42:47,989 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_97763ee5-5f49-4d61-b971-2086809e86c0/bin-2019/utaipan/data/ad4917bfc/dcadd0a855ce429a9c00d6c58f26d474 [2018-10-27 05:42:47,991 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:42:47,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 05:42:47,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:42:47,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:42:47,996 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:42:47,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:42:47" (1/1) ... [2018-10-27 05:42:48,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b25249f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:47, skipping insertion in model container [2018-10-27 05:42:48,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:42:47" (1/1) ... [2018-10-27 05:42:48,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:42:48,021 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:42:48,143 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:42:48,146 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:42:48,157 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:42:48,166 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:42:48,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:48 WrapperNode [2018-10-27 05:42:48,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:42:48,168 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 05:42:48,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 05:42:48,168 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 05:42:48,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:48" (1/1) ... [2018-10-27 05:42:48,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:48" (1/1) ... [2018-10-27 05:42:48,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 05:42:48,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:42:48,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:42:48,187 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:42:48,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:48" (1/1) ... [2018-10-27 05:42:48,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:48" (1/1) ... [2018-10-27 05:42:48,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:48" (1/1) ... [2018-10-27 05:42:48,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:48" (1/1) ... [2018-10-27 05:42:48,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:48" (1/1) ... [2018-10-27 05:42:48,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:48" (1/1) ... [2018-10-27 05:42:48,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:48" (1/1) ... [2018-10-27 05:42:48,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:42:48,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:42:48,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:42:48,208 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:42:48,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_97763ee5-5f49-4d61-b971-2086809e86c0/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 [2018-10-27 05:42:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:42:48,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:42:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:42:48,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:42:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:42:48,326 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:42:48,631 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:42:48,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:42:48 BoogieIcfgContainer [2018-10-27 05:42:48,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:42:48,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:42:48,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:42:48,636 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:42:48,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:42:47" (1/3) ... [2018-10-27 05:42:48,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae0fecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:42:48, skipping insertion in model container [2018-10-27 05:42:48,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:48" (2/3) ... [2018-10-27 05:42:48,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae0fecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:42:48, skipping insertion in model container [2018-10-27 05:42:48,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:42:48" (3/3) ... [2018-10-27 05:42:48,640 INFO L112 eAbstractionObserver]: Analyzing ICFG Urban-WST2013-Fig2-modified1000_true-termination_true-no-overflow.c [2018-10-27 05:42:48,649 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:42:48,655 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-10-27 05:42:48,669 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-10-27 05:42:48,696 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:42:48,696 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:42:48,696 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:42:48,696 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:42:48,696 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:42:48,697 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:42:48,697 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:42:48,697 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:42:48,712 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-10-27 05:42:48,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-27 05:42:48,717 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:42:48,718 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:42:48,720 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:42:48,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:42:48,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1432253197, now seen corresponding path program 1 times [2018-10-27 05:42:48,728 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:42:48,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:42:48,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:42:48,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:42:48,774 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:42:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:42:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:42:48,823 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:42:48,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:42:48,824 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:42:48,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-27 05:42:48,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-27 05:42:48,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 05:42:48,844 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2018-10-27 05:42:48,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:42:48,861 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2018-10-27 05:42:48,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 05:42:48,862 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-10-27 05:42:48,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:42:48,870 INFO L225 Difference]: With dead ends: 39 [2018-10-27 05:42:48,871 INFO L226 Difference]: Without dead ends: 17 [2018-10-27 05:42:48,874 INFO L605 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 [2018-10-27 05:42:48,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-27 05:42:48,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-27 05:42:48,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-27 05:42:48,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-10-27 05:42:48,909 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2018-10-27 05:42:48,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:42:48,909 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-10-27 05:42:48,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-27 05:42:48,910 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-10-27 05:42:48,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-27 05:42:48,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:42:48,911 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:42:48,911 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:42:48,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:42:48,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1450187957, now seen corresponding path program 1 times [2018-10-27 05:42:48,912 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:42:48,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:42:48,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:42:48,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:42:48,915 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:42:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:42:48,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:42:48,983 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:42:48,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 05:42:48,983 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:42:48,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:42:48,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:42:48,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:42:48,986 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 3 states. [2018-10-27 05:42:49,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:42:49,064 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2018-10-27 05:42:49,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:42:49,065 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-10-27 05:42:49,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:42:49,066 INFO L225 Difference]: With dead ends: 33 [2018-10-27 05:42:49,066 INFO L226 Difference]: Without dead ends: 21 [2018-10-27 05:42:49,066 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:42:49,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-27 05:42:49,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-27 05:42:49,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-27 05:42:49,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-10-27 05:42:49,069 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 10 [2018-10-27 05:42:49,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:42:49,069 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-10-27 05:42:49,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:42:49,071 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-10-27 05:42:49,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-27 05:42:49,071 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:42:49,071 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:42:49,071 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:42:49,072 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:42:49,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1450187902, now seen corresponding path program 1 times [2018-10-27 05:42:49,072 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:42:49,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:42:49,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:42:49,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:42:49,076 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:42:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:42:49,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:42:49,109 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:42:49,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:42:49,109 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:42:49,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:42:49,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:42:49,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:42:49,110 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 3 states. [2018-10-27 05:42:49,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:42:49,142 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-10-27 05:42:49,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:42:49,144 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-10-27 05:42:49,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:42:49,145 INFO L225 Difference]: With dead ends: 23 [2018-10-27 05:42:49,145 INFO L226 Difference]: Without dead ends: 22 [2018-10-27 05:42:49,145 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 [2018-10-27 05:42:49,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-27 05:42:49,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-10-27 05:42:49,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-27 05:42:49,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-10-27 05:42:49,149 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2018-10-27 05:42:49,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:42:49,149 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-10-27 05:42:49,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:42:49,149 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-10-27 05:42:49,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-27 05:42:49,151 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:42:49,151 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:42:49,152 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:42:49,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:42:49,152 INFO L82 PathProgramCache]: Analyzing trace with hash -802592061, now seen corresponding path program 1 times [2018-10-27 05:42:49,152 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:42:49,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:42:49,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:42:49,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:42:49,154 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:42:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:42:49,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:42:49,207 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:42:49,207 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:42:49,208 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-10-27 05:42:49,210 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [14], [18], [22], [24], [26], [28], [32], [41], [42], [43] [2018-10-27 05:42:49,254 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 05:42:49,254 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:42:49,435 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:42:49,436 INFO L272 AbstractInterpreter]: Visited 13 different actions 77 times. Merged at 5 different actions 52 times. Widened at 1 different actions 8 times. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-10-27 05:42:49,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:42:49,450 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:42:49,509 INFO L227 lantSequenceWeakener]: Weakened 3 states. On average, predicates are now at 50% of their original sizes. [2018-10-27 05:42:49,509 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:42:49,725 INFO L415 sIntCurrentIteration]: We unified 13 AI predicates to 13 [2018-10-27 05:42:49,725 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:42:49,725 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:42:49,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2018-10-27 05:42:49,726 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:42:49,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:42:49,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:42:49,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:42:49,727 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2018-10-27 05:42:49,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:42:49,837 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2018-10-27 05:42:49,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 05:42:49,837 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-10-27 05:42:49,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:42:49,837 INFO L225 Difference]: With dead ends: 20 [2018-10-27 05:42:49,837 INFO L226 Difference]: Without dead ends: 0 [2018-10-27 05:42:49,838 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:42:49,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-27 05:42:49,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-27 05:42:49,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-27 05:42:49,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-27 05:42:49,840 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-10-27 05:42:49,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:42:49,840 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 05:42:49,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:42:49,840 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-27 05:42:49,840 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-27 05:42:49,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-27 05:42:50,092 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 15 [2018-10-27 05:42:50,097 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-27 05:42:50,097 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-27 05:42:50,097 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-27 05:42:50,097 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-27 05:42:50,097 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-27 05:42:50,098 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-27 05:42:50,098 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-10-27 05:42:50,098 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 14 27) no Hoare annotation was computed. [2018-10-27 05:42:50,098 INFO L425 ceAbstractionStarter]: For program point L21-1(lines 21 23) no Hoare annotation was computed. [2018-10-27 05:42:50,099 INFO L425 ceAbstractionStarter]: For program point L19-1(lines 19 25) no Hoare annotation was computed. [2018-10-27 05:42:50,099 INFO L421 ceAbstractionStarter]: At program point L21-3(lines 21 23) the Hoare annotation is: (let ((.cse0 (* 2 main_~x1~0))) (and (<= .cse0 20) (<= 0 (+ .cse0 4294967296)) (<= 2 (* 2 main_~x2~0)) (<= main_~x2~0 1000))) [2018-10-27 05:42:50,099 INFO L425 ceAbstractionStarter]: For program point L21-4(lines 21 23) no Hoare annotation was computed. [2018-10-27 05:42:50,100 INFO L421 ceAbstractionStarter]: At program point L19-3(lines 19 25) the Hoare annotation is: (let ((.cse0 (* 2 main_~x1~0))) (and (<= 0 (+ .cse0 4294967296)) (<= .cse0 4294967294))) [2018-10-27 05:42:50,100 INFO L425 ceAbstractionStarter]: For program point L19-4(lines 19 25) no Hoare annotation was computed. [2018-10-27 05:42:50,100 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 14 27) no Hoare annotation was computed. [2018-10-27 05:42:50,100 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 14 27) the Hoare annotation is: true [2018-10-27 05:42:50,100 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-10-27 05:42:50,100 INFO L425 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-10-27 05:42:50,100 INFO L425 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-10-27 05:42:50,100 INFO L425 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-10-27 05:42:50,100 INFO L425 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-10-27 05:42:50,100 INFO L425 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-10-27 05:42:50,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:42:50 BoogieIcfgContainer [2018-10-27 05:42:50,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 05:42:50,108 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 05:42:50,108 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 05:42:50,108 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 05:42:50,108 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:42:48" (3/4) ... [2018-10-27 05:42:50,112 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-27 05:42:50,117 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-27 05:42:50,118 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-27 05:42:50,121 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-10-27 05:42:50,121 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-10-27 05:42:50,122 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-27 05:42:50,151 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_97763ee5-5f49-4d61-b971-2086809e86c0/bin-2019/utaipan/witness.graphml [2018-10-27 05:42:50,152 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 05:42:50,152 INFO L168 Benchmark]: Toolchain (without parser) took 2160.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 955.8 MB in the beginning and 1.1 GB in the end (delta: -103.3 MB). Peak memory consumption was 43.5 MB. Max. memory is 11.5 GB. [2018-10-27 05:42:50,153 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:42:50,153 INFO L168 Benchmark]: CACSL2BoogieTranslator took 174.06 ms. Allocated memory is still 1.0 GB. Free memory was 955.8 MB in the beginning and 945.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 05:42:50,155 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.28 ms. Allocated memory is still 1.0 GB. Free memory is still 945.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:42:50,155 INFO L168 Benchmark]: Boogie Preprocessor took 20.40 ms. Allocated memory is still 1.0 GB. Free memory was 945.1 MB in the beginning and 939.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-27 05:42:50,156 INFO L168 Benchmark]: RCFGBuilder took 424.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 939.7 MB in the beginning and 1.1 GB in the end (delta: -193.3 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2018-10-27 05:42:50,156 INFO L168 Benchmark]: TraceAbstraction took 1475.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 73.8 MB). Peak memory consumption was 73.8 MB. Max. memory is 11.5 GB. [2018-10-27 05:42:50,157 INFO L168 Benchmark]: Witness Printer took 44.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:42:50,161 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 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 174.06 ms. Allocated memory is still 1.0 GB. Free memory was 955.8 MB in the beginning and 945.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.28 ms. Allocated memory is still 1.0 GB. Free memory is still 945.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.40 ms. Allocated memory is still 1.0 GB. Free memory was 945.1 MB in the beginning and 939.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 424.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 939.7 MB in the beginning and 1.1 GB in the end (delta: -193.3 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1475.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 73.8 MB). Peak memory consumption was 73.8 MB. Max. memory is 11.5 GB. * Witness Printer took 44.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 24]: 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: 24]: 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((2 * x1 <= 20 && 0 <= 2 * x1 + 4294967296) && 2 <= 2 * x2) && x2 <= 1000 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 0 <= 2 * x1 + 4294967296 && 2 * x1 <= 4294967294 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 4 error locations. SAFE Result, 1.4s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 58 SDtfs, 23 SDslu, 30 SDs, 0 SdLazy, 20 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9807692307692307 AbsIntWeakeningRatio, 0.23076923076923078 AbsIntAvgWeakeningVarsNumRemoved, 1.3846153846153846 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 9 NumberOfFragments, 38 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 77 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 641 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...