./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/EvenOdd03_false-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d4c338a9-ef16-46f1-a199-ab8882c75676/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d4c338a9-ef16-46f1-a199-ab8882c75676/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d4c338a9-ef16-46f1-a199-ab8882c75676/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d4c338a9-ef16-46f1-a199-ab8882c75676/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/EvenOdd03_false-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d4c338a9-ef16-46f1-a199-ab8882c75676/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d4c338a9-ef16-46f1-a199-ab8882c75676/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 32bit --witnessprinter.graph.data.programhash f3d619d2c1c3b5319c1ba41a41e084c9947cb440 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 04:35:16,492 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 04:35:16,494 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 04:35:16,503 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 04:35:16,503 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 04:35:16,504 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 04:35:16,505 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 04:35:16,506 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 04:35:16,507 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 04:35:16,508 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 04:35:16,509 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 04:35:16,509 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 04:35:16,510 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 04:35:16,511 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 04:35:16,512 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 04:35:16,512 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 04:35:16,513 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 04:35:16,515 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 04:35:16,516 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 04:35:16,518 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 04:35:16,518 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 04:35:16,519 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 04:35:16,521 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 04:35:16,522 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 04:35:16,522 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 04:35:16,523 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 04:35:16,523 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 04:35:16,524 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 04:35:16,525 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 04:35:16,526 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 04:35:16,526 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 04:35:16,526 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 04:35:16,527 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 04:35:16,527 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 04:35:16,528 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 04:35:16,528 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 04:35:16,528 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d4c338a9-ef16-46f1-a199-ab8882c75676/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2018-11-23 04:35:16,539 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 04:35:16,540 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 04:35:16,540 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 04:35:16,541 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 04:35:16,541 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 04:35:16,541 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 04:35:16,541 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 04:35:16,541 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 04:35:16,541 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 04:35:16,541 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 04:35:16,542 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 04:35:16,542 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 04:35:16,542 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 04:35:16,542 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 04:35:16,543 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 04:35:16,543 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 04:35:16,543 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 04:35:16,543 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 04:35:16,543 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 04:35:16,543 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 04:35:16,544 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 04:35:16,544 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 04:35:16,544 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-23 04:35:16,544 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 04:35:16,544 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 04:35:16,544 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 04:35:16,544 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 04:35:16,545 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 04:35:16,545 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 04:35:16,545 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 04:35:16,545 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 04:35:16,545 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 04:35:16,545 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 04:35:16,545 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 04:35:16,545 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 04:35:16,545 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 04:35:16,546 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 04:35:16,546 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 04:35:16,546 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 04:35:16,546 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_d4c338a9-ef16-46f1-a199-ab8882c75676/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3d619d2c1c3b5319c1ba41a41e084c9947cb440 [2018-11-23 04:35:16,572 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 04:35:16,582 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 04:35:16,585 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 04:35:16,586 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 04:35:16,587 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 04:35:16,587 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d4c338a9-ef16-46f1-a199-ab8882c75676/bin-2019/utaipan/../../sv-benchmarks/c/recursive/EvenOdd03_false-unreach-call_true-no-overflow_true-termination.c [2018-11-23 04:35:16,633 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d4c338a9-ef16-46f1-a199-ab8882c75676/bin-2019/utaipan/data/adfd30033/c3c15ae5a7ce43d6ac6eb5b35e02fa03/FLAG9de4bf5c7 [2018-11-23 04:35:16,966 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 04:35:16,966 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d4c338a9-ef16-46f1-a199-ab8882c75676/sv-benchmarks/c/recursive/EvenOdd03_false-unreach-call_true-no-overflow_true-termination.c [2018-11-23 04:35:16,971 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d4c338a9-ef16-46f1-a199-ab8882c75676/bin-2019/utaipan/data/adfd30033/c3c15ae5a7ce43d6ac6eb5b35e02fa03/FLAG9de4bf5c7 [2018-11-23 04:35:16,983 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d4c338a9-ef16-46f1-a199-ab8882c75676/bin-2019/utaipan/data/adfd30033/c3c15ae5a7ce43d6ac6eb5b35e02fa03 [2018-11-23 04:35:16,985 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 04:35:16,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 04:35:16,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 04:35:16,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 04:35:16,990 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 04:35:16,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:35:16" (1/1) ... [2018-11-23 04:35:16,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ddd63d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:35:16, skipping insertion in model container [2018-11-23 04:35:16,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:35:16" (1/1) ... [2018-11-23 04:35:17,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 04:35:17,014 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 04:35:17,145 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 04:35:17,148 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 04:35:17,160 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 04:35:17,170 INFO L195 MainTranslator]: Completed translation [2018-11-23 04:35:17,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:35:17 WrapperNode [2018-11-23 04:35:17,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 04:35:17,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 04:35:17,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 04:35:17,172 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 04:35:17,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:35:17" (1/1) ... [2018-11-23 04:35:17,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:35:17" (1/1) ... [2018-11-23 04:35:17,186 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 04:35:17,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 04:35:17,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 04:35:17,186 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 04:35:17,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:35:17" (1/1) ... [2018-11-23 04:35:17,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:35:17" (1/1) ... [2018-11-23 04:35:17,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:35:17" (1/1) ... [2018-11-23 04:35:17,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:35:17" (1/1) ... [2018-11-23 04:35:17,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:35:17" (1/1) ... [2018-11-23 04:35:17,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:35:17" (1/1) ... [2018-11-23 04:35:17,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:35:17" (1/1) ... [2018-11-23 04:35:17,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 04:35:17,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 04:35:17,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 04:35:17,199 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 04:35:17,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:35:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d4c338a9-ef16-46f1-a199-ab8882c75676/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 [2018-11-23 04:35:17,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 04:35:17,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 04:35:17,288 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2018-11-23 04:35:17,288 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2018-11-23 04:35:17,288 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2018-11-23 04:35:17,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2018-11-23 04:35:17,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 04:35:17,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 04:35:17,289 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 04:35:17,289 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 04:35:17,493 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 04:35:17,494 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 04:35:17,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:35:17 BoogieIcfgContainer [2018-11-23 04:35:17,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 04:35:17,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 04:35:17,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 04:35:17,498 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 04:35:17,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:35:16" (1/3) ... [2018-11-23 04:35:17,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3ee21e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:35:17, skipping insertion in model container [2018-11-23 04:35:17,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:35:17" (2/3) ... [2018-11-23 04:35:17,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3ee21e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:35:17, skipping insertion in model container [2018-11-23 04:35:17,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:35:17" (3/3) ... [2018-11-23 04:35:17,502 INFO L112 eAbstractionObserver]: Analyzing ICFG EvenOdd03_false-unreach-call_true-no-overflow_true-termination.c [2018-11-23 04:35:17,512 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 04:35:17,520 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-23 04:35:17,537 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-23 04:35:17,568 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 04:35:17,569 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 04:35:17,569 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 04:35:17,569 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 04:35:17,569 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 04:35:17,569 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 04:35:17,569 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 04:35:17,570 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 04:35:17,589 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-11-23 04:35:17,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-23 04:35:17,595 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:35:17,596 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:35:17,598 INFO L423 AbstractCegarLoop]: === Iteration 1 === [isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 04:35:17,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:35:17,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1145500273, now seen corresponding path program 1 times [2018-11-23 04:35:17,607 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:35:17,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:35:17,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:35:17,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:35:17,654 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:35:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:35:17,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:35:17,762 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:35:17,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 04:35:17,762 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:35:17,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 04:35:17,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 04:35:17,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 04:35:17,779 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 5 states. [2018-11-23 04:35:17,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:35:17,880 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2018-11-23 04:35:17,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 04:35:17,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-23 04:35:17,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:35:17,887 INFO L225 Difference]: With dead ends: 53 [2018-11-23 04:35:17,888 INFO L226 Difference]: Without dead ends: 30 [2018-11-23 04:35:17,890 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 04:35:17,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-23 04:35:17,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2018-11-23 04:35:17,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-23 04:35:17,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-11-23 04:35:17,918 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 11 [2018-11-23 04:35:17,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:35:17,918 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-11-23 04:35:17,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 04:35:17,918 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-11-23 04:35:17,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-23 04:35:17,919 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:35:17,919 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:35:17,919 INFO L423 AbstractCegarLoop]: === Iteration 2 === [isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 04:35:17,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:35:17,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1150770052, now seen corresponding path program 1 times [2018-11-23 04:35:17,920 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:35:17,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:35:17,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:35:17,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:35:17,921 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:35:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:35:17,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:35:17,970 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:35:17,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 04:35:17,970 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:35:17,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 04:35:17,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 04:35:17,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 04:35:17,972 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 5 states. [2018-11-23 04:35:18,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:35:18,013 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-11-23 04:35:18,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 04:35:18,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-11-23 04:35:18,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:35:18,014 INFO L225 Difference]: With dead ends: 30 [2018-11-23 04:35:18,015 INFO L226 Difference]: Without dead ends: 29 [2018-11-23 04:35:18,015 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 04:35:18,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-23 04:35:18,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2018-11-23 04:35:18,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-23 04:35:18,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-11-23 04:35:18,020 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 12 [2018-11-23 04:35:18,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:35:18,021 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-11-23 04:35:18,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 04:35:18,021 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-11-23 04:35:18,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-23 04:35:18,021 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:35:18,022 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:35:18,022 INFO L423 AbstractCegarLoop]: === Iteration 3 === [isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 04:35:18,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:35:18,022 INFO L82 PathProgramCache]: Analyzing trace with hash -663468774, now seen corresponding path program 1 times [2018-11-23 04:35:18,022 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:35:18,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:35:18,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:35:18,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:35:18,024 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:35:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:35:18,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:35:18,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:35:18,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 04:35:18,064 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:35:18,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 04:35:18,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 04:35:18,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 04:35:18,065 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 5 states. [2018-11-23 04:35:18,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:35:18,116 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-11-23 04:35:18,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 04:35:18,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-11-23 04:35:18,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:35:18,117 INFO L225 Difference]: With dead ends: 28 [2018-11-23 04:35:18,117 INFO L226 Difference]: Without dead ends: 27 [2018-11-23 04:35:18,118 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 04:35:18,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-23 04:35:18,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-23 04:35:18,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-23 04:35:18,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-11-23 04:35:18,122 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 17 [2018-11-23 04:35:18,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:35:18,122 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-11-23 04:35:18,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 04:35:18,122 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-11-23 04:35:18,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-23 04:35:18,123 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:35:18,123 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:35:18,123 INFO L423 AbstractCegarLoop]: === Iteration 4 === [isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 04:35:18,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:35:18,124 INFO L82 PathProgramCache]: Analyzing trace with hash 907304545, now seen corresponding path program 1 times [2018-11-23 04:35:18,124 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:35:18,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:35:18,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:35:18,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:35:18,125 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:35:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:35:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:35:18,170 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:35:18,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-23 04:35:18,170 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:35:18,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 04:35:18,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 04:35:18,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-23 04:35:18,171 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 7 states. [2018-11-23 04:35:18,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:35:18,254 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-11-23 04:35:18,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 04:35:18,254 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2018-11-23 04:35:18,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:35:18,255 INFO L225 Difference]: With dead ends: 35 [2018-11-23 04:35:18,255 INFO L226 Difference]: Without dead ends: 34 [2018-11-23 04:35:18,255 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-23 04:35:18,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-23 04:35:18,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2018-11-23 04:35:18,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-23 04:35:18,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-11-23 04:35:18,260 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 18 [2018-11-23 04:35:18,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:35:18,260 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-11-23 04:35:18,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 04:35:18,260 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-11-23 04:35:18,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-23 04:35:18,261 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:35:18,261 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:35:18,261 INFO L423 AbstractCegarLoop]: === Iteration 5 === [isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 04:35:18,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:35:18,262 INFO L82 PathProgramCache]: Analyzing trace with hash -2012308137, now seen corresponding path program 1 times [2018-11-23 04:35:18,262 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:35:18,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:35:18,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:35:18,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:35:18,263 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:35:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:35:18,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:35:18,291 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:35:18,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 04:35:18,291 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:35:18,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 04:35:18,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 04:35:18,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 04:35:18,292 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 5 states. [2018-11-23 04:35:18,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:35:18,341 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-11-23 04:35:18,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 04:35:18,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-11-23 04:35:18,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:35:18,342 INFO L225 Difference]: With dead ends: 33 [2018-11-23 04:35:18,342 INFO L226 Difference]: Without dead ends: 32 [2018-11-23 04:35:18,342 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 04:35:18,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-23 04:35:18,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-11-23 04:35:18,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-23 04:35:18,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-11-23 04:35:18,346 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 23 [2018-11-23 04:35:18,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:35:18,346 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-11-23 04:35:18,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 04:35:18,346 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-11-23 04:35:18,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-23 04:35:18,347 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:35:18,347 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:35:18,347 INFO L423 AbstractCegarLoop]: === Iteration 6 === [isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 04:35:18,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:35:18,348 INFO L82 PathProgramCache]: Analyzing trace with hash 2042957236, now seen corresponding path program 1 times [2018-11-23 04:35:18,348 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:35:18,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:35:18,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:35:18,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:35:18,349 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:35:18,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:35:18,411 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:35:18,411 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:35:18,411 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 04:35:18,412 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-11-23 04:35:18,414 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [11], [12], [13], [17], [21], [25], [27], [29], [36], [40], [50], [52], [54], [55], [56], [58] [2018-11-23 04:35:18,449 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 04:35:18,449 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 04:35:18,579 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 04:35:18,580 INFO L272 AbstractInterpreter]: Visited 20 different actions 40 times. Never merged. Never widened. Performed 76 root evaluator evaluations with a maximum evaluation depth of 3. Performed 76 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 2 variables. [2018-11-23 04:35:18,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:35:18,588 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 04:35:18,588 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:35:18,588 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d4c338a9-ef16-46f1-a199-ab8882c75676/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 [2018-11-23 04:35:18,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:35:18,601 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 04:35:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:35:18,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 04:35:18,643 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:35:18,644 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 04:35:18,744 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:35:18,766 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 04:35:18,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2018-11-23 04:35:18,767 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 04:35:18,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 04:35:18,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 04:35:18,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2018-11-23 04:35:18,768 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 9 states. [2018-11-23 04:35:18,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:35:18,851 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-11-23 04:35:18,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 04:35:18,852 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-11-23 04:35:18,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:35:18,852 INFO L225 Difference]: With dead ends: 40 [2018-11-23 04:35:18,852 INFO L226 Difference]: Without dead ends: 39 [2018-11-23 04:35:18,853 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2018-11-23 04:35:18,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-23 04:35:18,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2018-11-23 04:35:18,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-23 04:35:18,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-11-23 04:35:18,857 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 24 [2018-11-23 04:35:18,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:35:18,858 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-11-23 04:35:18,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 04:35:18,858 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-11-23 04:35:18,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-23 04:35:18,858 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:35:18,859 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:35:18,859 INFO L423 AbstractCegarLoop]: === Iteration 7 === [isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 04:35:18,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:35:18,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1071972967, now seen corresponding path program 1 times [2018-11-23 04:35:18,859 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:35:18,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:35:18,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:35:18,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:35:18,861 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:35:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:35:18,939 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:35:18,939 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:35:18,939 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 04:35:18,940 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-11-23 04:35:18,940 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [11], [13], [17], [21], [25], [27], [28], [29], [36], [40], [50], [52], [54], [55], [56], [58] [2018-11-23 04:35:18,941 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 04:35:18,941 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 04:35:18,965 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 04:35:18,966 INFO L272 AbstractInterpreter]: Visited 20 different actions 39 times. Never merged. Never widened. Performed 74 root evaluator evaluations with a maximum evaluation depth of 3. Performed 74 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 2 variables. [2018-11-23 04:35:18,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:35:18,968 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 04:35:18,968 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:35:18,968 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d4c338a9-ef16-46f1-a199-ab8882c75676/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 [2018-11-23 04:35:18,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:35:18,975 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 04:35:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:35:18,987 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 04:35:18,996 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:35:18,996 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 04:35:19,093 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:35:19,109 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 04:35:19,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2018-11-23 04:35:19,109 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 04:35:19,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 04:35:19,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 04:35:19,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2018-11-23 04:35:19,110 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 11 states. [2018-11-23 04:35:19,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:35:19,207 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-11-23 04:35:19,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-23 04:35:19,208 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2018-11-23 04:35:19,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:35:19,209 INFO L225 Difference]: With dead ends: 46 [2018-11-23 04:35:19,209 INFO L226 Difference]: Without dead ends: 45 [2018-11-23 04:35:19,209 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2018-11-23 04:35:19,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-23 04:35:19,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2018-11-23 04:35:19,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-23 04:35:19,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-11-23 04:35:19,213 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 30 [2018-11-23 04:35:19,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:35:19,214 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-11-23 04:35:19,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 04:35:19,214 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-11-23 04:35:19,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-23 04:35:19,215 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:35:19,215 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:35:19,215 INFO L423 AbstractCegarLoop]: === Iteration 8 === [isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 04:35:19,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:35:19,215 INFO L82 PathProgramCache]: Analyzing trace with hash 2020958956, now seen corresponding path program 2 times [2018-11-23 04:35:19,215 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:35:19,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:35:19,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:35:19,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:35:19,216 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:35:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:35:19,310 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:35:19,311 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:35:19,311 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 04:35:19,311 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 04:35:19,311 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 04:35:19,311 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:35:19,312 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d4c338a9-ef16-46f1-a199-ab8882c75676/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 04:35:19,327 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 04:35:19,327 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 04:35:19,338 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-23 04:35:19,339 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 04:35:19,341 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 04:35:19,351 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:35:19,351 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 04:35:19,496 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:35:19,512 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 04:35:19,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2018-11-23 04:35:19,512 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 04:35:19,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-23 04:35:19,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-23 04:35:19,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2018-11-23 04:35:19,513 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 13 states. [2018-11-23 04:35:19,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:35:19,635 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-11-23 04:35:19,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-23 04:35:19,636 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2018-11-23 04:35:19,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:35:19,637 INFO L225 Difference]: With dead ends: 52 [2018-11-23 04:35:19,637 INFO L226 Difference]: Without dead ends: 51 [2018-11-23 04:35:19,638 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2018-11-23 04:35:19,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-23 04:35:19,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2018-11-23 04:35:19,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-23 04:35:19,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-11-23 04:35:19,644 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 36 [2018-11-23 04:35:19,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:35:19,644 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-11-23 04:35:19,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-23 04:35:19,644 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-11-23 04:35:19,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-23 04:35:19,645 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:35:19,645 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:35:19,646 INFO L423 AbstractCegarLoop]: === Iteration 9 === [isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 04:35:19,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:35:19,646 INFO L82 PathProgramCache]: Analyzing trace with hash -19625775, now seen corresponding path program 2 times [2018-11-23 04:35:19,646 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:35:19,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:35:19,647 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 04:35:19,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:35:19,647 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:35:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:35:19,751 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:35:19,751 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:35:19,751 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 04:35:19,751 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 04:35:19,752 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 04:35:19,752 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:35:19,752 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d4c338a9-ef16-46f1-a199-ab8882c75676/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 04:35:19,760 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 04:35:19,760 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 04:35:19,773 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-23 04:35:19,773 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 04:35:19,775 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 04:35:19,784 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:35:19,785 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 04:35:19,981 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:35:19,999 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 04:35:19,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2018-11-23 04:35:19,999 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 04:35:19,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-23 04:35:19,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-23 04:35:20,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2018-11-23 04:35:20,000 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 15 states. [2018-11-23 04:35:20,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:35:20,115 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-11-23 04:35:20,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-23 04:35:20,115 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2018-11-23 04:35:20,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:35:20,116 INFO L225 Difference]: With dead ends: 58 [2018-11-23 04:35:20,116 INFO L226 Difference]: Without dead ends: 57 [2018-11-23 04:35:20,116 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=930, Unknown=0, NotChecked=0, Total=1122 [2018-11-23 04:35:20,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-23 04:35:20,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2018-11-23 04:35:20,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-23 04:35:20,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-11-23 04:35:20,121 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 42 [2018-11-23 04:35:20,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:35:20,121 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-11-23 04:35:20,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-23 04:35:20,121 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-11-23 04:35:20,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-23 04:35:20,122 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:35:20,122 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:35:20,122 INFO L423 AbstractCegarLoop]: === Iteration 10 === [isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 04:35:20,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:35:20,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1661492188, now seen corresponding path program 3 times [2018-11-23 04:35:20,123 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:35:20,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:35:20,124 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 04:35:20,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:35:20,124 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:35:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:35:20,256 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:35:20,256 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:35:20,256 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 04:35:20,256 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 04:35:20,256 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 04:35:20,256 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:35:20,257 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d4c338a9-ef16-46f1-a199-ab8882c75676/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 04:35:20,274 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 04:35:20,274 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-23 04:35:20,284 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 04:35:20,285 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 04:35:20,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 04:35:20,347 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-11-23 04:35:20,347 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 04:35:20,604 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:35:20,622 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 04:35:20,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8, 16] total 35 [2018-11-23 04:35:20,622 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 04:35:20,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-23 04:35:20,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-23 04:35:20,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1075, Unknown=0, NotChecked=0, Total=1260 [2018-11-23 04:35:20,624 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 21 states. [2018-11-23 04:35:20,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:35:20,698 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-11-23 04:35:20,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 04:35:20,699 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 48 [2018-11-23 04:35:20,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:35:20,699 INFO L225 Difference]: With dead ends: 56 [2018-11-23 04:35:20,700 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 04:35:20,700 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 71 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=261, Invalid=1299, Unknown=0, NotChecked=0, Total=1560 [2018-11-23 04:35:20,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 04:35:20,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 04:35:20,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 04:35:20,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 04:35:20,701 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2018-11-23 04:35:20,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:35:20,702 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 04:35:20,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-23 04:35:20,702 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 04:35:20,702 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 04:35:20,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 04:35:20,754 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:35:20,850 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 04:35:20,850 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 04:35:20,850 INFO L448 ceAbstractionStarter]: For program point L32(line 32) no Hoare annotation was computed. [2018-11-23 04:35:20,850 INFO L448 ceAbstractionStarter]: For program point L32-1(line 32) no Hoare annotation was computed. [2018-11-23 04:35:20,851 INFO L444 ceAbstractionStarter]: At program point L32-2(line 32) the Hoare annotation is: (or (and (not (= isEven_~n 0)) (<= 0 isEven_~n) (<= isEven_~n 2147483647) (not (= isEven_~n 1))) (< 2147483647 |isEven_#in~n|) (< |isEven_#in~n| 0)) [2018-11-23 04:35:20,851 INFO L448 ceAbstractionStarter]: For program point L29(lines 29 33) no Hoare annotation was computed. [2018-11-23 04:35:20,851 INFO L448 ceAbstractionStarter]: For program point L32-3(line 32) no Hoare annotation was computed. [2018-11-23 04:35:20,851 INFO L448 ceAbstractionStarter]: For program point L27(lines 27 33) no Hoare annotation was computed. [2018-11-23 04:35:20,851 INFO L451 ceAbstractionStarter]: At program point isEvenENTRY(lines 26 34) the Hoare annotation is: true [2018-11-23 04:35:20,851 INFO L448 ceAbstractionStarter]: For program point isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2018-11-23 04:35:20,851 INFO L448 ceAbstractionStarter]: For program point isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2018-11-23 04:35:20,851 INFO L448 ceAbstractionStarter]: For program point isEvenEXIT(lines 26 34) no Hoare annotation was computed. [2018-11-23 04:35:20,851 INFO L448 ceAbstractionStarter]: For program point isEvenFINAL(lines 26 34) no Hoare annotation was computed. [2018-11-23 04:35:20,851 INFO L448 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-23 04:35:20,851 INFO L448 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-11-23 04:35:20,851 INFO L444 ceAbstractionStarter]: At program point L22-2(line 22) the Hoare annotation is: (or (< 2147483647 |isOdd_#in~n|) (and (<= isOdd_~n 2147483647) (<= 1 isOdd_~n)) (< |isOdd_#in~n| 1)) [2018-11-23 04:35:20,852 INFO L448 ceAbstractionStarter]: For program point L19(lines 19 23) no Hoare annotation was computed. [2018-11-23 04:35:20,852 INFO L448 ceAbstractionStarter]: For program point L22-3(line 22) no Hoare annotation was computed. [2018-11-23 04:35:20,852 INFO L448 ceAbstractionStarter]: For program point L17(lines 17 23) no Hoare annotation was computed. [2018-11-23 04:35:20,852 INFO L448 ceAbstractionStarter]: For program point isOddFINAL(lines 16 24) no Hoare annotation was computed. [2018-11-23 04:35:20,852 INFO L448 ceAbstractionStarter]: For program point isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-23 04:35:20,852 INFO L451 ceAbstractionStarter]: At program point isOddENTRY(lines 16 24) the Hoare annotation is: true [2018-11-23 04:35:20,852 INFO L448 ceAbstractionStarter]: For program point isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-23 04:35:20,852 INFO L448 ceAbstractionStarter]: For program point isOddEXIT(lines 16 24) no Hoare annotation was computed. [2018-11-23 04:35:20,852 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 04:35:20,852 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 04:35:20,852 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 04:35:20,852 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 04:35:20,852 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 37 49) the Hoare annotation is: true [2018-11-23 04:35:20,853 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 37 49) no Hoare annotation was computed. [2018-11-23 04:35:20,853 INFO L448 ceAbstractionStarter]: For program point L47(line 47) no Hoare annotation was computed. [2018-11-23 04:35:20,853 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 37 49) no Hoare annotation was computed. [2018-11-23 04:35:20,853 INFO L448 ceAbstractionStarter]: For program point L44(lines 44 48) no Hoare annotation was computed. [2018-11-23 04:35:20,853 INFO L444 ceAbstractionStarter]: At program point L42(line 42) the Hoare annotation is: (and (<= 0 main_~n~0) (<= main_~n~0 2147483647)) [2018-11-23 04:35:20,853 INFO L448 ceAbstractionStarter]: For program point L42-1(line 42) no Hoare annotation was computed. [2018-11-23 04:35:20,853 INFO L448 ceAbstractionStarter]: For program point L39(lines 39 41) no Hoare annotation was computed. [2018-11-23 04:35:20,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:35:20 BoogieIcfgContainer [2018-11-23 04:35:20,855 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 04:35:20,856 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 04:35:20,856 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 04:35:20,856 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 04:35:20,856 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:35:17" (3/4) ... [2018-11-23 04:35:20,859 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 04:35:20,864 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 04:35:20,864 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isEven [2018-11-23 04:35:20,864 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isOdd [2018-11-23 04:35:20,864 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 04:35:20,867 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-23 04:35:20,867 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-23 04:35:20,867 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 04:35:20,900 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d4c338a9-ef16-46f1-a199-ab8882c75676/bin-2019/utaipan/witness.graphml [2018-11-23 04:35:20,900 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 04:35:20,901 INFO L168 Benchmark]: Toolchain (without parser) took 3915.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -139.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2018-11-23 04:35:20,902 INFO L168 Benchmark]: CDTParser took 0.14 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. [2018-11-23 04:35:20,903 INFO L168 Benchmark]: CACSL2BoogieTranslator took 183.84 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 04:35:20,903 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.60 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 04:35:20,904 INFO L168 Benchmark]: Boogie Preprocessor took 12.76 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 04:35:20,904 INFO L168 Benchmark]: RCFGBuilder took 295.18 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -151.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2018-11-23 04:35:20,904 INFO L168 Benchmark]: TraceAbstraction took 3360.43 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 41.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -6.4 MB). Peak memory consumption was 35.5 MB. Max. memory is 11.5 GB. [2018-11-23 04:35:20,905 INFO L168 Benchmark]: Witness Printer took 44.47 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: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 11.5 GB. [2018-11-23 04:35:20,910 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 183.84 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.60 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.76 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 295.18 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -151.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3360.43 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 41.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -6.4 MB). Peak memory consumption was 35.5 MB. Max. memory is 11.5 GB. * Witness Printer took 44.47 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: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 32]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 32]: 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 36 locations, 4 error locations. SAFE Result, 3.2s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 146 SDtfs, 198 SDslu, 743 SDs, 0 SdLazy, 657 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 466 GetRequests, 301 SyntacticMatches, 6 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 9 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 21 PreInvPairs, 21 NumberOfFragments, 53 HoareAnnotationTreeSize, 21 FomulaSimplifications, 375 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 366 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 441 NumberOfCodeBlocks, 441 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 601 ConstructedInterpolants, 0 QuantifiedInterpolants, 85633 SizeOfPredicates, 30 NumberOfNonLiveVariables, 325 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 20 InterpolantComputations, 5 PerfectInterpolantSequences, 46/373 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...