./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random2d_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random2d_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b0a853f0131530f88013a3fcfdf4f133f41c0569 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 13:00:57,277 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:00:57,278 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:00:57,286 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:00:57,286 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:00:57,287 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:00:57,288 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:00:57,289 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:00:57,290 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:00:57,290 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:00:57,291 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:00:57,291 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:00:57,292 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:00:57,293 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:00:57,294 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:00:57,294 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:00:57,295 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:00:57,296 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:00:57,297 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:00:57,298 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:00:57,299 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:00:57,300 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:00:57,302 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:00:57,302 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:00:57,302 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:00:57,302 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:00:57,303 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:00:57,304 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:00:57,305 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:00:57,305 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:00:57,305 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:00:57,306 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:00:57,306 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:00:57,306 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:00:57,307 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:00:57,307 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:00:57,307 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-11-18 13:00:57,317 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:00:57,318 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:00:57,318 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:00:57,318 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 13:00:57,319 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 13:00:57,319 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 13:00:57,319 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 13:00:57,319 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 13:00:57,319 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 13:00:57,319 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 13:00:57,319 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 13:00:57,319 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 13:00:57,320 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 13:00:57,321 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:00:57,321 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 13:00:57,321 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 13:00:57,321 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:00:57,321 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:00:57,321 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:00:57,322 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:00:57,322 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 13:00:57,322 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:00:57,322 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:00:57,322 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:00:57,322 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:00:57,322 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:00:57,322 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:00:57,323 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:00:57,323 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:00:57,323 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:00:57,323 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:00:57,323 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:00:57,323 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 13:00:57,323 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:00:57,323 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 13:00:57,324 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 13:00:57,324 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_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0a853f0131530f88013a3fcfdf4f133f41c0569 [2018-11-18 13:00:57,348 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:00:57,357 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:00:57,359 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:00:57,361 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:00:57,361 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:00:57,362 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random2d_true-termination_true-no-overflow.c [2018-11-18 13:00:57,405 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/data/72c3dbcac/08abf6fe54784fe3b84a3d7ce9d84fa9/FLAGb1c243f22 [2018-11-18 13:00:57,809 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:00:57,810 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random2d_true-termination_true-no-overflow.c [2018-11-18 13:00:57,813 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/data/72c3dbcac/08abf6fe54784fe3b84a3d7ce9d84fa9/FLAGb1c243f22 [2018-11-18 13:00:57,823 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/data/72c3dbcac/08abf6fe54784fe3b84a3d7ce9d84fa9 [2018-11-18 13:00:57,825 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:00:57,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 13:00:57,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:00:57,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:00:57,828 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:00:57,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:00:57" (1/1) ... [2018-11-18 13:00:57,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4915a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:57, skipping insertion in model container [2018-11-18 13:00:57,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:00:57" (1/1) ... [2018-11-18 13:00:57,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:00:57,851 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:00:57,982 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:00:57,985 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:00:57,998 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:00:58,009 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:00:58,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:58 WrapperNode [2018-11-18 13:00:58,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:00:58,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 13:00:58,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 13:00:58,010 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 13:00:58,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:58" (1/1) ... [2018-11-18 13:00:58,021 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:58" (1/1) ... [2018-11-18 13:00:58,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 13:00:58,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:00:58,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:00:58,027 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:00:58,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:58" (1/1) ... [2018-11-18 13:00:58,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:58" (1/1) ... [2018-11-18 13:00:58,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:58" (1/1) ... [2018-11-18 13:00:58,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:58" (1/1) ... [2018-11-18 13:00:58,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:58" (1/1) ... [2018-11-18 13:00:58,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:58" (1/1) ... [2018-11-18 13:00:58,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:58" (1/1) ... [2018-11-18 13:00:58,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:00:58,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:00:58,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:00:58,044 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:00:58,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:00:58,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:00:58,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:00:58,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:00:58,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:00:58,117 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:00:58,117 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:00:58,230 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:00:58,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:00:58 BoogieIcfgContainer [2018-11-18 13:00:58,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:00:58,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:00:58,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:00:58,233 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:00:58,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:00:57" (1/3) ... [2018-11-18 13:00:58,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b584e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:00:58, skipping insertion in model container [2018-11-18 13:00:58,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:58" (2/3) ... [2018-11-18 13:00:58,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b584e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:00:58, skipping insertion in model container [2018-11-18 13:00:58,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:00:58" (3/3) ... [2018-11-18 13:00:58,236 INFO L112 eAbstractionObserver]: Analyzing ICFG ChawdharyCookGulwaniSagivYang-ESOP2008-random2d_true-termination_true-no-overflow.c [2018-11-18 13:00:58,241 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:00:58,246 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2018-11-18 13:00:58,254 INFO L257 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2018-11-18 13:00:58,274 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:00:58,274 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:00:58,274 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:00:58,274 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:00:58,274 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:00:58,274 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:00:58,274 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:00:58,275 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:00:58,285 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-11-18 13:00:58,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-18 13:00:58,288 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:00:58,289 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:00:58,290 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:00:58,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:00:58,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1007353508, now seen corresponding path program 1 times [2018-11-18 13:00:58,296 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:00:58,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:00:58,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:00:58,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:00:58,333 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:00:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:00:58,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:00:58,387 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:00:58,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:00:58,387 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:00:58,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 13:00:58,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 13:00:58,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:00:58,405 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2018-11-18 13:00:58,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:00:58,448 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2018-11-18 13:00:58,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 13:00:58,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-11-18 13:00:58,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:00:58,456 INFO L225 Difference]: With dead ends: 50 [2018-11-18 13:00:58,456 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 13:00:58,458 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:00:58,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 13:00:58,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2018-11-18 13:00:58,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-18 13:00:58,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2018-11-18 13:00:58,482 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 8 [2018-11-18 13:00:58,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:00:58,482 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2018-11-18 13:00:58,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 13:00:58,483 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2018-11-18 13:00:58,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 13:00:58,483 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:00:58,483 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:00:58,484 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:00:58,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:00:58,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1163187724, now seen corresponding path program 1 times [2018-11-18 13:00:58,484 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:00:58,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:00:58,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:00:58,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:00:58,486 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:00:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:00:58,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:00:58,508 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:00:58,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:00:58,508 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:00:58,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 13:00:58,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 13:00:58,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:00:58,510 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 3 states. [2018-11-18 13:00:58,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:00:58,518 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2018-11-18 13:00:58,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 13:00:58,518 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-18 13:00:58,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:00:58,519 INFO L225 Difference]: With dead ends: 35 [2018-11-18 13:00:58,519 INFO L226 Difference]: Without dead ends: 34 [2018-11-18 13:00:58,520 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:00:58,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-18 13:00:58,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-11-18 13:00:58,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-18 13:00:58,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2018-11-18 13:00:58,523 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 9 [2018-11-18 13:00:58,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:00:58,523 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2018-11-18 13:00:58,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 13:00:58,524 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2018-11-18 13:00:58,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 13:00:58,524 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:00:58,524 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:00:58,524 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:00:58,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:00:58,525 INFO L82 PathProgramCache]: Analyzing trace with hash 729392297, now seen corresponding path program 1 times [2018-11-18 13:00:58,525 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:00:58,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:00:58,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:00:58,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:00:58,526 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:00:58,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:00:58,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:00:58,549 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:00:58,549 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:00:58,549 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:00:58,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 13:00:58,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 13:00:58,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:00:58,550 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 3 states. [2018-11-18 13:00:58,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:00:58,569 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2018-11-18 13:00:58,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 13:00:58,569 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-11-18 13:00:58,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:00:58,570 INFO L225 Difference]: With dead ends: 58 [2018-11-18 13:00:58,570 INFO L226 Difference]: Without dead ends: 56 [2018-11-18 13:00:58,570 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:00:58,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-11-18 13:00:58,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2018-11-18 13:00:58,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-18 13:00:58,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2018-11-18 13:00:58,575 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 12 [2018-11-18 13:00:58,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:00:58,575 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2018-11-18 13:00:58,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 13:00:58,575 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2018-11-18 13:00:58,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 13:00:58,576 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:00:58,576 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:00:58,576 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:00:58,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:00:58,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1136324785, now seen corresponding path program 1 times [2018-11-18 13:00:58,577 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:00:58,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:00:58,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:00:58,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:00:58,578 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:00:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:00:58,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:00:58,614 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:00:58,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:00:58,614 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:00:58,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 13:00:58,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 13:00:58,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:00:58,615 INFO L87 Difference]: Start difference. First operand 50 states and 66 transitions. Second operand 3 states. [2018-11-18 13:00:58,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:00:58,643 INFO L93 Difference]: Finished difference Result 90 states and 124 transitions. [2018-11-18 13:00:58,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 13:00:58,643 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-18 13:00:58,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:00:58,644 INFO L225 Difference]: With dead ends: 90 [2018-11-18 13:00:58,644 INFO L226 Difference]: Without dead ends: 88 [2018-11-18 13:00:58,645 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:00:58,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-11-18 13:00:58,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2018-11-18 13:00:58,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-11-18 13:00:58,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 121 transitions. [2018-11-18 13:00:58,652 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 121 transitions. Word has length 13 [2018-11-18 13:00:58,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:00:58,653 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 121 transitions. [2018-11-18 13:00:58,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 13:00:58,653 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 121 transitions. [2018-11-18 13:00:58,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 13:00:58,653 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:00:58,654 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:00:58,654 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:00:58,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:00:58,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1137470874, now seen corresponding path program 1 times [2018-11-18 13:00:58,654 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:00:58,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:00:58,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:00:58,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:00:58,656 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:00:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:00:58,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 13:00:58,686 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:00:58,686 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:00:58,686 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2018-11-18 13:00:58,688 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [14], [15], [16], [18], [60], [67], [68], [69] [2018-11-18 13:00:58,713 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 13:00:58,713 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 13:00:58,812 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 13:00:58,812 INFO L272 AbstractInterpreter]: Visited 11 different actions 23 times. Merged at 5 different actions 10 times. Never widened. Performed 85 root evaluator evaluations with a maximum evaluation depth of 3. Performed 85 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 6 variables. [2018-11-18 13:00:58,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:00:58,818 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 13:00:58,818 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:00:58,818 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:00:58,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:00:58,824 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 13:00:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:00:58,842 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:00:58,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:00:58,882 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:00:58,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:00:58,938 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:00:58,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2018-11-18 13:00:58,939 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:00:58,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 13:00:58,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 13:00:58,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:00:58,939 INFO L87 Difference]: Start difference. First operand 83 states and 121 transitions. Second operand 6 states. [2018-11-18 13:00:58,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:00:58,988 INFO L93 Difference]: Finished difference Result 167 states and 236 transitions. [2018-11-18 13:00:58,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 13:00:58,989 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-11-18 13:00:58,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:00:58,990 INFO L225 Difference]: With dead ends: 167 [2018-11-18 13:00:58,990 INFO L226 Difference]: Without dead ends: 166 [2018-11-18 13:00:58,990 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2018-11-18 13:00:58,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-11-18 13:00:58,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 79. [2018-11-18 13:00:58,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-11-18 13:00:58,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 114 transitions. [2018-11-18 13:00:58,995 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 114 transitions. Word has length 13 [2018-11-18 13:00:58,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:00:58,996 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 114 transitions. [2018-11-18 13:00:58,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 13:00:58,996 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 114 transitions. [2018-11-18 13:00:58,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 13:00:58,996 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:00:58,996 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:00:58,997 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:00:58,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:00:58,997 INFO L82 PathProgramCache]: Analyzing trace with hash 866521714, now seen corresponding path program 1 times [2018-11-18 13:00:58,997 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:00:58,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:00:58,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:00:58,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:00:58,998 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:00:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:00:59,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:00:59,013 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:00:59,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:00:59,013 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:00:59,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 13:00:59,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 13:00:59,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:00:59,014 INFO L87 Difference]: Start difference. First operand 79 states and 114 transitions. Second operand 3 states. [2018-11-18 13:00:59,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:00:59,043 INFO L93 Difference]: Finished difference Result 151 states and 223 transitions. [2018-11-18 13:00:59,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 13:00:59,043 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-11-18 13:00:59,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:00:59,044 INFO L225 Difference]: With dead ends: 151 [2018-11-18 13:00:59,044 INFO L226 Difference]: Without dead ends: 149 [2018-11-18 13:00:59,044 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:00:59,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-11-18 13:00:59,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 141. [2018-11-18 13:00:59,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-11-18 13:00:59,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 207 transitions. [2018-11-18 13:00:59,053 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 207 transitions. Word has length 14 [2018-11-18 13:00:59,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:00:59,053 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 207 transitions. [2018-11-18 13:00:59,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 13:00:59,054 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 207 transitions. [2018-11-18 13:00:59,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 13:00:59,054 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:00:59,054 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:00:59,054 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:00:59,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:00:59,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1092369434, now seen corresponding path program 1 times [2018-11-18 13:00:59,055 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:00:59,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:00:59,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:00:59,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:00:59,056 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:00:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:00:59,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:00:59,073 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:00:59,073 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:00:59,073 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:00:59,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 13:00:59,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 13:00:59,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:00:59,074 INFO L87 Difference]: Start difference. First operand 141 states and 207 transitions. Second operand 3 states. [2018-11-18 13:00:59,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:00:59,102 INFO L93 Difference]: Finished difference Result 275 states and 409 transitions. [2018-11-18 13:00:59,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 13:00:59,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-11-18 13:00:59,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:00:59,103 INFO L225 Difference]: With dead ends: 275 [2018-11-18 13:00:59,103 INFO L226 Difference]: Without dead ends: 273 [2018-11-18 13:00:59,103 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:00:59,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-11-18 13:00:59,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 269. [2018-11-18 13:00:59,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-11-18 13:00:59,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 397 transitions. [2018-11-18 13:00:59,119 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 397 transitions. Word has length 15 [2018-11-18 13:00:59,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:00:59,119 INFO L480 AbstractCegarLoop]: Abstraction has 269 states and 397 transitions. [2018-11-18 13:00:59,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 13:00:59,119 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 397 transitions. [2018-11-18 13:00:59,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 13:00:59,120 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:00:59,120 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:00:59,120 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:00:59,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:00:59,121 INFO L82 PathProgramCache]: Analyzing trace with hash 195554908, now seen corresponding path program 1 times [2018-11-18 13:00:59,121 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:00:59,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:00:59,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:00:59,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:00:59,122 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:00:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:00:59,153 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:00:59,153 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:00:59,153 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:00:59,153 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-11-18 13:00:59,153 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [14], [16], [18], [21], [24], [25], [26], [28], [67], [68], [69] [2018-11-18 13:00:59,154 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 13:00:59,154 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 13:00:59,207 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 13:00:59,207 INFO L272 AbstractInterpreter]: Visited 14 different actions 50 times. Merged at 9 different actions 33 times. Never widened. Performed 242 root evaluator evaluations with a maximum evaluation depth of 3. Performed 242 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 6 variables. [2018-11-18 13:00:59,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:00:59,211 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 13:00:59,212 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:00:59,212 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:00:59,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:00:59,218 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 13:00:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:00:59,225 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:00:59,228 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:00:59,228 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:00:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:00:59,263 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:00:59,263 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2018-11-18 13:00:59,263 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:00:59,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 13:00:59,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 13:00:59,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 13:00:59,264 INFO L87 Difference]: Start difference. First operand 269 states and 397 transitions. Second operand 4 states. [2018-11-18 13:00:59,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:00:59,294 INFO L93 Difference]: Finished difference Result 481 states and 720 transitions. [2018-11-18 13:00:59,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 13:00:59,295 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-11-18 13:00:59,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:00:59,296 INFO L225 Difference]: With dead ends: 481 [2018-11-18 13:00:59,296 INFO L226 Difference]: Without dead ends: 479 [2018-11-18 13:00:59,297 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 13:00:59,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-11-18 13:00:59,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 385. [2018-11-18 13:00:59,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-11-18 13:00:59,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 571 transitions. [2018-11-18 13:00:59,314 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 571 transitions. Word has length 20 [2018-11-18 13:00:59,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:00:59,314 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 571 transitions. [2018-11-18 13:00:59,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 13:00:59,314 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 571 transitions. [2018-11-18 13:00:59,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 13:00:59,315 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:00:59,315 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:00:59,316 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:00:59,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:00:59,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1628808007, now seen corresponding path program 1 times [2018-11-18 13:00:59,316 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:00:59,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:00:59,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:00:59,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:00:59,317 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:00:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:00:59,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:00:59,353 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:00:59,353 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:00:59,353 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2018-11-18 13:00:59,353 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [14], [16], [18], [21], [24], [26], [27], [30], [33], [35], [37], [67], [68], [69] [2018-11-18 13:00:59,354 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 13:00:59,354 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 13:00:59,387 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 13:00:59,388 INFO L272 AbstractInterpreter]: Visited 17 different actions 41 times. Merged at 11 different actions 22 times. Never widened. Performed 141 root evaluator evaluations with a maximum evaluation depth of 3. Performed 141 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 6 variables. [2018-11-18 13:00:59,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:00:59,393 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 13:00:59,393 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:00:59,393 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/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 [2018-11-18 13:00:59,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:00:59,399 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 13:00:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:00:59,409 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:00:59,437 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:00:59,438 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:00:59,452 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:00:59,467 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-18 13:00:59,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 5 [2018-11-18 13:00:59,467 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:00:59,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 13:00:59,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 13:00:59,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 13:00:59,468 INFO L87 Difference]: Start difference. First operand 385 states and 571 transitions. Second operand 3 states. [2018-11-18 13:00:59,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:00:59,482 INFO L93 Difference]: Finished difference Result 385 states and 571 transitions. [2018-11-18 13:00:59,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 13:00:59,483 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-11-18 13:00:59,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:00:59,484 INFO L225 Difference]: With dead ends: 385 [2018-11-18 13:00:59,484 INFO L226 Difference]: Without dead ends: 384 [2018-11-18 13:00:59,485 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 13:00:59,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-11-18 13:00:59,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2018-11-18 13:00:59,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2018-11-18 13:00:59,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 563 transitions. [2018-11-18 13:00:59,495 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 563 transitions. Word has length 22 [2018-11-18 13:00:59,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:00:59,496 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 563 transitions. [2018-11-18 13:00:59,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 13:00:59,496 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 563 transitions. [2018-11-18 13:00:59,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 13:00:59,497 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:00:59,497 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:00:59,497 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:00:59,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:00:59,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1046745092, now seen corresponding path program 1 times [2018-11-18 13:00:59,498 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:00:59,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:00:59,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:00:59,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:00:59,499 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:00:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:00:59,537 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:00:59,537 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:00:59,538 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:00:59,538 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2018-11-18 13:00:59,538 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [14], [16], [18], [21], [30], [33], [35], [36], [37], [67], [68], [69] [2018-11-18 13:00:59,539 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 13:00:59,539 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 13:00:59,591 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 13:00:59,591 INFO L272 AbstractInterpreter]: Visited 15 different actions 55 times. Merged at 10 different actions 37 times. Never widened. Performed 258 root evaluator evaluations with a maximum evaluation depth of 3. Performed 258 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 6 variables. [2018-11-18 13:00:59,600 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:00:59,600 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 13:00:59,600 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:00:59,601 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/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 [2018-11-18 13:00:59,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:00:59,607 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 13:00:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:00:59,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:00:59,617 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:00:59,618 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:00:59,654 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:00:59,669 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:00:59,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2018-11-18 13:00:59,669 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:00:59,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 13:00:59,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 13:00:59,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 13:00:59,670 INFO L87 Difference]: Start difference. First operand 384 states and 563 transitions. Second operand 4 states. [2018-11-18 13:00:59,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:00:59,706 INFO L93 Difference]: Finished difference Result 653 states and 963 transitions. [2018-11-18 13:00:59,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 13:00:59,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-18 13:00:59,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:00:59,708 INFO L225 Difference]: With dead ends: 653 [2018-11-18 13:00:59,709 INFO L226 Difference]: Without dead ends: 652 [2018-11-18 13:00:59,709 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 13:00:59,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2018-11-18 13:00:59,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 500. [2018-11-18 13:00:59,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2018-11-18 13:00:59,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 737 transitions. [2018-11-18 13:00:59,723 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 737 transitions. Word has length 23 [2018-11-18 13:00:59,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:00:59,724 INFO L480 AbstractCegarLoop]: Abstraction has 500 states and 737 transitions. [2018-11-18 13:00:59,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 13:00:59,724 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 737 transitions. [2018-11-18 13:00:59,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 13:00:59,725 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:00:59,725 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:00:59,725 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:00:59,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:00:59,726 INFO L82 PathProgramCache]: Analyzing trace with hash -143968740, now seen corresponding path program 1 times [2018-11-18 13:00:59,726 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:00:59,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:00:59,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:00:59,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:00:59,727 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:00:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:00:59,765 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:00:59,766 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:00:59,766 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:00:59,766 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-11-18 13:00:59,766 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [14], [16], [18], [21], [30], [39], [42], [43], [44], [46], [67], [68], [69] [2018-11-18 13:00:59,767 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 13:00:59,767 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 13:00:59,791 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 13:00:59,791 INFO L272 AbstractInterpreter]: Visited 16 different actions 38 times. Merged at 10 different actions 20 times. Never widened. Performed 133 root evaluator evaluations with a maximum evaluation depth of 3. Performed 133 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 6 variables. [2018-11-18 13:00:59,795 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:00:59,796 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 13:00:59,796 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:00:59,796 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/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 [2018-11-18 13:00:59,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:00:59,802 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 13:00:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:00:59,809 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:00:59,811 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:00:59,811 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:00:59,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:00:59,836 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:00:59,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2018-11-18 13:00:59,836 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:00:59,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 13:00:59,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 13:00:59,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 13:00:59,837 INFO L87 Difference]: Start difference. First operand 500 states and 737 transitions. Second operand 4 states. [2018-11-18 13:00:59,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:00:59,879 INFO L93 Difference]: Finished difference Result 894 states and 1344 transitions. [2018-11-18 13:00:59,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 13:00:59,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-11-18 13:00:59,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:00:59,882 INFO L225 Difference]: With dead ends: 894 [2018-11-18 13:00:59,882 INFO L226 Difference]: Without dead ends: 892 [2018-11-18 13:00:59,883 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 13:00:59,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2018-11-18 13:00:59,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 720. [2018-11-18 13:00:59,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 720 states. [2018-11-18 13:00:59,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1059 transitions. [2018-11-18 13:00:59,901 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1059 transitions. Word has length 24 [2018-11-18 13:00:59,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:00:59,901 INFO L480 AbstractCegarLoop]: Abstraction has 720 states and 1059 transitions. [2018-11-18 13:00:59,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 13:00:59,901 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1059 transitions. [2018-11-18 13:00:59,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 13:00:59,902 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:00:59,902 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:00:59,903 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:00:59,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:00:59,903 INFO L82 PathProgramCache]: Analyzing trace with hash -981204821, now seen corresponding path program 1 times [2018-11-18 13:00:59,903 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:00:59,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:00:59,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:00:59,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:00:59,904 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:00:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:00:59,939 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:00:59,939 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:00:59,939 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:00:59,940 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 27 with the following transitions: [2018-11-18 13:00:59,940 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [14], [16], [18], [21], [30], [39], [42], [44], [45], [48], [51], [53], [55], [67], [68], [69] [2018-11-18 13:00:59,941 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 13:00:59,941 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 13:00:59,984 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 13:00:59,984 INFO L272 AbstractInterpreter]: Visited 19 different actions 75 times. Merged at 14 different actions 53 times. Never widened. Performed 322 root evaluator evaluations with a maximum evaluation depth of 3. Performed 322 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 6 variables. [2018-11-18 13:00:59,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:00:59,996 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 13:00:59,996 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:00:59,996 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:00,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:00,003 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 13:01:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:00,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:00,025 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:00,026 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:00,046 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:00,061 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-18 13:01:00,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 5 [2018-11-18 13:01:00,062 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:01:00,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 13:01:00,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 13:01:00,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 13:01:00,062 INFO L87 Difference]: Start difference. First operand 720 states and 1059 transitions. Second operand 3 states. [2018-11-18 13:01:00,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:00,089 INFO L93 Difference]: Finished difference Result 720 states and 1059 transitions. [2018-11-18 13:01:00,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 13:01:00,090 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2018-11-18 13:01:00,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:00,093 INFO L225 Difference]: With dead ends: 720 [2018-11-18 13:01:00,093 INFO L226 Difference]: Without dead ends: 719 [2018-11-18 13:01:00,101 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 13:01:00,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2018-11-18 13:01:00,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 719. [2018-11-18 13:01:00,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 719 states. [2018-11-18 13:01:00,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1043 transitions. [2018-11-18 13:01:00,128 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1043 transitions. Word has length 26 [2018-11-18 13:01:00,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:00,129 INFO L480 AbstractCegarLoop]: Abstraction has 719 states and 1043 transitions. [2018-11-18 13:01:00,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 13:01:00,129 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1043 transitions. [2018-11-18 13:01:00,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 13:01:00,130 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:00,130 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:00,130 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:00,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:00,131 INFO L82 PathProgramCache]: Analyzing trace with hash -352392604, now seen corresponding path program 1 times [2018-11-18 13:01:00,131 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:00,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:00,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:00,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:00,132 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:00,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:00,179 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:00,179 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:00,180 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 28 with the following transitions: [2018-11-18 13:01:00,180 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [14], [16], [18], [21], [30], [39], [48], [51], [53], [54], [55], [67], [68], [69] [2018-11-18 13:01:00,181 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 13:01:00,181 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 13:01:00,215 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 13:01:00,215 INFO L272 AbstractInterpreter]: Visited 17 different actions 41 times. Merged at 11 different actions 22 times. Never widened. Performed 141 root evaluator evaluations with a maximum evaluation depth of 3. Performed 141 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 6 variables. [2018-11-18 13:01:00,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:00,219 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 13:01:00,219 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:00,220 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:00,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:00,231 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 13:01:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:00,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:00,242 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:00,242 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:00,261 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:00,286 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:00,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2018-11-18 13:01:00,287 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:00,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 13:01:00,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 13:01:00,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 13:01:00,287 INFO L87 Difference]: Start difference. First operand 719 states and 1043 transitions. Second operand 4 states. [2018-11-18 13:01:00,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:00,347 INFO L93 Difference]: Finished difference Result 1222 states and 1791 transitions. [2018-11-18 13:01:00,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 13:01:00,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-18 13:01:00,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:00,353 INFO L225 Difference]: With dead ends: 1222 [2018-11-18 13:01:00,354 INFO L226 Difference]: Without dead ends: 1221 [2018-11-18 13:01:00,355 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 13:01:00,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2018-11-18 13:01:00,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 939. [2018-11-18 13:01:00,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 939 states. [2018-11-18 13:01:00,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1365 transitions. [2018-11-18 13:01:00,388 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1365 transitions. Word has length 27 [2018-11-18 13:01:00,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:00,388 INFO L480 AbstractCegarLoop]: Abstraction has 939 states and 1365 transitions. [2018-11-18 13:01:00,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 13:01:00,388 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1365 transitions. [2018-11-18 13:01:00,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 13:01:00,389 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:00,389 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:00,389 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:00,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:00,390 INFO L82 PathProgramCache]: Analyzing trace with hash 223794447, now seen corresponding path program 2 times [2018-11-18 13:01:00,390 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:00,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:00,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:00,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:00,391 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:00,414 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:00,415 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:00,415 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:00,415 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:00,415 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:00,415 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:00,415 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:00,428 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 13:01:00,428 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 13:01:00,438 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-18 13:01:00,438 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:01:00,439 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:00,442 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:00,442 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:00,493 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:00,518 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:00,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2018-11-18 13:01:00,518 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:00,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 13:01:00,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 13:01:00,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:01:00,519 INFO L87 Difference]: Start difference. First operand 939 states and 1365 transitions. Second operand 5 states. [2018-11-18 13:01:00,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:00,607 INFO L93 Difference]: Finished difference Result 1612 states and 2374 transitions. [2018-11-18 13:01:00,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 13:01:00,608 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2018-11-18 13:01:00,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:00,613 INFO L225 Difference]: With dead ends: 1612 [2018-11-18 13:01:00,613 INFO L226 Difference]: Without dead ends: 1610 [2018-11-18 13:01:00,614 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:01:00,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2018-11-18 13:01:00,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1285. [2018-11-18 13:01:00,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1285 states. [2018-11-18 13:01:00,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1860 transitions. [2018-11-18 13:01:00,656 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1860 transitions. Word has length 28 [2018-11-18 13:01:00,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:00,656 INFO L480 AbstractCegarLoop]: Abstraction has 1285 states and 1860 transitions. [2018-11-18 13:01:00,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 13:01:00,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1860 transitions. [2018-11-18 13:01:00,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 13:01:00,657 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:00,657 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:00,657 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:00,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:00,658 INFO L82 PathProgramCache]: Analyzing trace with hash -849210868, now seen corresponding path program 2 times [2018-11-18 13:01:00,658 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:00,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:00,659 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:01:00,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:00,659 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:00,703 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:00,703 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:00,703 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:00,703 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:00,703 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:00,704 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:00,704 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:00,714 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 13:01:00,714 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 13:01:00,728 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-18 13:01:00,728 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:01:00,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:00,733 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:00,733 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:00,758 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:00,782 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:00,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2018-11-18 13:01:00,783 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:00,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 13:01:00,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 13:01:00,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:01:00,783 INFO L87 Difference]: Start difference. First operand 1285 states and 1860 transitions. Second operand 5 states. [2018-11-18 13:01:00,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:00,886 INFO L93 Difference]: Finished difference Result 2091 states and 3042 transitions. [2018-11-18 13:01:00,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 13:01:00,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-11-18 13:01:00,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:00,892 INFO L225 Difference]: With dead ends: 2091 [2018-11-18 13:01:00,892 INFO L226 Difference]: Without dead ends: 2090 [2018-11-18 13:01:00,894 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:01:00,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2018-11-18 13:01:00,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1537. [2018-11-18 13:01:00,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1537 states. [2018-11-18 13:01:00,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1537 states to 1537 states and 2222 transitions. [2018-11-18 13:01:00,945 INFO L78 Accepts]: Start accepts. Automaton has 1537 states and 2222 transitions. Word has length 32 [2018-11-18 13:01:00,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:00,945 INFO L480 AbstractCegarLoop]: Abstraction has 1537 states and 2222 transitions. [2018-11-18 13:01:00,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 13:01:00,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1537 states and 2222 transitions. [2018-11-18 13:01:00,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-18 13:01:00,946 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:00,946 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:00,946 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:00,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:00,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1388360378, now seen corresponding path program 2 times [2018-11-18 13:01:00,947 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:00,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:00,948 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:01:00,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:00,948 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:00,987 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:00,987 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:00,987 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:00,987 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:00,987 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:00,987 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:00,987 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:00,999 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 13:01:00,999 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 13:01:01,008 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-18 13:01:01,008 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:01:01,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:01,013 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:01,014 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:01,036 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:01,061 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:01,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2018-11-18 13:01:01,061 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:01,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 13:01:01,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 13:01:01,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:01:01,062 INFO L87 Difference]: Start difference. First operand 1537 states and 2222 transitions. Second operand 5 states. [2018-11-18 13:01:01,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:01,146 INFO L93 Difference]: Finished difference Result 2635 states and 3866 transitions. [2018-11-18 13:01:01,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 13:01:01,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2018-11-18 13:01:01,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:01,154 INFO L225 Difference]: With dead ends: 2635 [2018-11-18 13:01:01,154 INFO L226 Difference]: Without dead ends: 2633 [2018-11-18 13:01:01,156 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:01:01,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2633 states. [2018-11-18 13:01:01,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2633 to 2106. [2018-11-18 13:01:01,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2106 states. [2018-11-18 13:01:01,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 3029 transitions. [2018-11-18 13:01:01,225 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 3029 transitions. Word has length 34 [2018-11-18 13:01:01,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:01,225 INFO L480 AbstractCegarLoop]: Abstraction has 2106 states and 3029 transitions. [2018-11-18 13:01:01,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 13:01:01,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 3029 transitions. [2018-11-18 13:01:01,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-18 13:01:01,226 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:01,226 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:01,227 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:01,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:01,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1466345278, now seen corresponding path program 3 times [2018-11-18 13:01:01,227 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:01,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:01,228 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:01:01,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:01,228 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:01,289 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:01,289 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:01,289 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:01,289 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:01,289 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:01,289 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:01,289 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:01,299 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 13:01:01,299 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-18 13:01:01,309 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 13:01:01,309 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:01:01,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:01,315 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:01,315 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:01,350 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:01,365 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:01,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2018-11-18 13:01:01,366 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:01,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 13:01:01,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 13:01:01,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-18 13:01:01,366 INFO L87 Difference]: Start difference. First operand 2106 states and 3029 transitions. Second operand 6 states. [2018-11-18 13:01:01,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:01,429 INFO L93 Difference]: Finished difference Result 3397 states and 4956 transitions. [2018-11-18 13:01:01,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 13:01:01,430 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2018-11-18 13:01:01,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:01,435 INFO L225 Difference]: With dead ends: 3397 [2018-11-18 13:01:01,435 INFO L226 Difference]: Without dead ends: 3395 [2018-11-18 13:01:01,437 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-18 13:01:01,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3395 states. [2018-11-18 13:01:01,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3395 to 2754. [2018-11-18 13:01:01,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2754 states. [2018-11-18 13:01:01,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2754 states to 2754 states and 3940 transitions. [2018-11-18 13:01:01,489 INFO L78 Accepts]: Start accepts. Automaton has 2754 states and 3940 transitions. Word has length 36 [2018-11-18 13:01:01,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:01,489 INFO L480 AbstractCegarLoop]: Abstraction has 2754 states and 3940 transitions. [2018-11-18 13:01:01,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 13:01:01,489 INFO L276 IsEmpty]: Start isEmpty. Operand 2754 states and 3940 transitions. [2018-11-18 13:01:01,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-18 13:01:01,490 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:01,490 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:01,490 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:01,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:01,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1981242741, now seen corresponding path program 2 times [2018-11-18 13:01:01,491 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:01,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:01,491 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:01:01,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:01,492 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:01,532 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:01,532 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:01,532 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:01,532 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:01,532 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:01,532 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:01,533 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:01,541 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 13:01:01,541 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 13:01:01,550 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-18 13:01:01,550 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:01:01,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:01,557 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:01,557 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:01,595 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:01,611 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:01,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2018-11-18 13:01:01,611 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:01,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 13:01:01,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 13:01:01,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:01:01,612 INFO L87 Difference]: Start difference. First operand 2754 states and 3940 transitions. Second operand 5 states. [2018-11-18 13:01:01,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:01,694 INFO L93 Difference]: Finished difference Result 4475 states and 6448 transitions. [2018-11-18 13:01:01,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 13:01:01,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2018-11-18 13:01:01,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:01,702 INFO L225 Difference]: With dead ends: 4475 [2018-11-18 13:01:01,702 INFO L226 Difference]: Without dead ends: 4474 [2018-11-18 13:01:01,704 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:01:01,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4474 states. [2018-11-18 13:01:01,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4474 to 3296. [2018-11-18 13:01:01,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3296 states. [2018-11-18 13:01:01,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3296 states to 3296 states and 4708 transitions. [2018-11-18 13:01:01,792 INFO L78 Accepts]: Start accepts. Automaton has 3296 states and 4708 transitions. Word has length 38 [2018-11-18 13:01:01,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:01,792 INFO L480 AbstractCegarLoop]: Abstraction has 3296 states and 4708 transitions. [2018-11-18 13:01:01,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 13:01:01,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3296 states and 4708 transitions. [2018-11-18 13:01:01,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-18 13:01:01,793 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:01,793 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:01,793 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:01,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:01,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1901189380, now seen corresponding path program 3 times [2018-11-18 13:01:01,794 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:01,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:01,794 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:01:01,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:01,795 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:01,829 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:01,829 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:01,829 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:01,830 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:01,830 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:01,830 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:01,830 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:01,841 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 13:01:01,842 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-18 13:01:01,856 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 13:01:01,856 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:01:01,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:01,862 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:01,862 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:01,909 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:01,925 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:01,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2018-11-18 13:01:01,925 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:01,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 13:01:01,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 13:01:01,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-18 13:01:01,926 INFO L87 Difference]: Start difference. First operand 3296 states and 4708 transitions. Second operand 6 states. [2018-11-18 13:01:02,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:02,000 INFO L93 Difference]: Finished difference Result 5056 states and 7276 transitions. [2018-11-18 13:01:02,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 13:01:02,001 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2018-11-18 13:01:02,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:02,009 INFO L225 Difference]: With dead ends: 5056 [2018-11-18 13:01:02,009 INFO L226 Difference]: Without dead ends: 5055 [2018-11-18 13:01:02,011 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-18 13:01:02,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5055 states. [2018-11-18 13:01:02,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5055 to 3710. [2018-11-18 13:01:02,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3710 states. [2018-11-18 13:01:02,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3710 states to 3710 states and 5298 transitions. [2018-11-18 13:01:02,082 INFO L78 Accepts]: Start accepts. Automaton has 3710 states and 5298 transitions. Word has length 41 [2018-11-18 13:01:02,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:02,082 INFO L480 AbstractCegarLoop]: Abstraction has 3710 states and 5298 transitions. [2018-11-18 13:01:02,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 13:01:02,082 INFO L276 IsEmpty]: Start isEmpty. Operand 3710 states and 5298 transitions. [2018-11-18 13:01:02,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-18 13:01:02,083 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:02,083 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:02,084 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:02,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:02,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1836942987, now seen corresponding path program 4 times [2018-11-18 13:01:02,084 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:02,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:02,085 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:01:02,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:02,085 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:02,125 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:02,125 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:02,125 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:02,125 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:02,125 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:02,126 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:02,126 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:02,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:02,145 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 13:01:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:02,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:02,166 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:02,167 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:02,218 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:02,234 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:02,234 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2018-11-18 13:01:02,234 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:02,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 13:01:02,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 13:01:02,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-18 13:01:02,235 INFO L87 Difference]: Start difference. First operand 3710 states and 5298 transitions. Second operand 7 states. [2018-11-18 13:01:02,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:02,313 INFO L93 Difference]: Finished difference Result 5694 states and 8252 transitions. [2018-11-18 13:01:02,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 13:01:02,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2018-11-18 13:01:02,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:02,328 INFO L225 Difference]: With dead ends: 5694 [2018-11-18 13:01:02,328 INFO L226 Difference]: Without dead ends: 5692 [2018-11-18 13:01:02,331 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-18 13:01:02,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5692 states. [2018-11-18 13:01:02,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5692 to 4693. [2018-11-18 13:01:02,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4693 states. [2018-11-18 13:01:02,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 6669 transitions. [2018-11-18 13:01:02,413 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 6669 transitions. Word has length 44 [2018-11-18 13:01:02,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:02,413 INFO L480 AbstractCegarLoop]: Abstraction has 4693 states and 6669 transitions. [2018-11-18 13:01:02,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 13:01:02,413 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 6669 transitions. [2018-11-18 13:01:02,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-18 13:01:02,414 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:02,414 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:02,415 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:02,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:02,415 INFO L82 PathProgramCache]: Analyzing trace with hash 598210544, now seen corresponding path program 3 times [2018-11-18 13:01:02,415 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:02,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:02,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:02,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:02,416 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:02,466 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:02,466 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:02,466 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:02,466 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:02,466 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:02,466 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:02,466 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:02,485 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 13:01:02,486 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-18 13:01:02,494 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 13:01:02,494 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:01:02,495 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:02,499 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:02,499 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:02,548 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:02,564 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:02,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2018-11-18 13:01:02,564 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:02,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 13:01:02,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 13:01:02,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-18 13:01:02,565 INFO L87 Difference]: Start difference. First operand 4693 states and 6669 transitions. Second operand 6 states. [2018-11-18 13:01:02,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:02,722 INFO L93 Difference]: Finished difference Result 7553 states and 10909 transitions. [2018-11-18 13:01:02,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 13:01:02,723 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2018-11-18 13:01:02,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:02,733 INFO L225 Difference]: With dead ends: 7553 [2018-11-18 13:01:02,733 INFO L226 Difference]: Without dead ends: 7551 [2018-11-18 13:01:02,736 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-18 13:01:02,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7551 states. [2018-11-18 13:01:02,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7551 to 6141. [2018-11-18 13:01:02,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6141 states. [2018-11-18 13:01:02,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6141 states to 6141 states and 8677 transitions. [2018-11-18 13:01:02,877 INFO L78 Accepts]: Start accepts. Automaton has 6141 states and 8677 transitions. Word has length 44 [2018-11-18 13:01:02,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:02,877 INFO L480 AbstractCegarLoop]: Abstraction has 6141 states and 8677 transitions. [2018-11-18 13:01:02,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 13:01:02,877 INFO L276 IsEmpty]: Start isEmpty. Operand 6141 states and 8677 transitions. [2018-11-18 13:01:02,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-18 13:01:02,879 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:02,879 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:02,879 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:02,879 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:02,879 INFO L82 PathProgramCache]: Analyzing trace with hash -602602044, now seen corresponding path program 3 times [2018-11-18 13:01:02,879 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:02,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:02,880 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:01:02,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:02,881 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:02,921 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:02,921 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:02,921 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:02,921 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:02,921 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:02,921 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:02,921 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:02,940 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 13:01:02,940 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-18 13:01:02,956 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 13:01:02,956 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:01:02,958 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:02,963 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:02,963 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:03,016 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:03,032 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:03,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2018-11-18 13:01:03,032 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:03,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 13:01:03,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 13:01:03,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-18 13:01:03,033 INFO L87 Difference]: Start difference. First operand 6141 states and 8677 transitions. Second operand 6 states. [2018-11-18 13:01:03,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:03,147 INFO L93 Difference]: Finished difference Result 9410 states and 13413 transitions. [2018-11-18 13:01:03,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 13:01:03,149 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2018-11-18 13:01:03,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:03,159 INFO L225 Difference]: With dead ends: 9410 [2018-11-18 13:01:03,159 INFO L226 Difference]: Without dead ends: 9409 [2018-11-18 13:01:03,163 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-18 13:01:03,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9409 states. [2018-11-18 13:01:03,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9409 to 6913. [2018-11-18 13:01:03,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6913 states. [2018-11-18 13:01:03,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6913 states to 6913 states and 9765 transitions. [2018-11-18 13:01:03,268 INFO L78 Accepts]: Start accepts. Automaton has 6913 states and 9765 transitions. Word has length 49 [2018-11-18 13:01:03,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:03,268 INFO L480 AbstractCegarLoop]: Abstraction has 6913 states and 9765 transitions. [2018-11-18 13:01:03,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 13:01:03,268 INFO L276 IsEmpty]: Start isEmpty. Operand 6913 states and 9765 transitions. [2018-11-18 13:01:03,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-18 13:01:03,270 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:03,270 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:03,270 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:03,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:03,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1055287564, now seen corresponding path program 4 times [2018-11-18 13:01:03,270 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:03,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:03,271 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:01:03,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:03,271 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:03,322 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:03,323 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:03,323 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:03,323 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:03,323 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:03,323 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:03,323 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:03,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:03,333 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 13:01:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:03,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:03,347 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:03,347 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:03,410 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:03,425 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:03,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2018-11-18 13:01:03,425 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:03,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 13:01:03,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 13:01:03,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-18 13:01:03,426 INFO L87 Difference]: Start difference. First operand 6913 states and 9765 transitions. Second operand 7 states. [2018-11-18 13:01:03,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:03,575 INFO L93 Difference]: Finished difference Result 10150 states and 14465 transitions. [2018-11-18 13:01:03,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 13:01:03,575 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2018-11-18 13:01:03,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:03,591 INFO L225 Difference]: With dead ends: 10150 [2018-11-18 13:01:03,591 INFO L226 Difference]: Without dead ends: 10149 [2018-11-18 13:01:03,596 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-18 13:01:03,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10149 states. [2018-11-18 13:01:03,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10149 to 7523. [2018-11-18 13:01:03,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7523 states. [2018-11-18 13:01:03,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7523 states to 7523 states and 10629 transitions. [2018-11-18 13:01:03,772 INFO L78 Accepts]: Start accepts. Automaton has 7523 states and 10629 transitions. Word has length 50 [2018-11-18 13:01:03,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:03,772 INFO L480 AbstractCegarLoop]: Abstraction has 7523 states and 10629 transitions. [2018-11-18 13:01:03,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 13:01:03,772 INFO L276 IsEmpty]: Start isEmpty. Operand 7523 states and 10629 transitions. [2018-11-18 13:01:03,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-18 13:01:03,774 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:03,774 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:03,774 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:03,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:03,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1121634520, now seen corresponding path program 5 times [2018-11-18 13:01:03,775 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:03,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:03,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:03,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:03,776 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:03,839 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:03,839 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:03,839 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:03,839 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:03,839 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:03,839 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:03,840 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:03,855 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 13:01:03,855 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 13:01:03,868 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-18 13:01:03,868 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:01:03,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:03,874 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:03,874 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:03,987 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:04,002 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:04,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2018-11-18 13:01:04,002 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:04,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 13:01:04,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 13:01:04,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-18 13:01:04,003 INFO L87 Difference]: Start difference. First operand 7523 states and 10629 transitions. Second operand 8 states. [2018-11-18 13:01:04,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:04,137 INFO L93 Difference]: Finished difference Result 11088 states and 15913 transitions. [2018-11-18 13:01:04,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 13:01:04,137 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2018-11-18 13:01:04,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:04,149 INFO L225 Difference]: With dead ends: 11088 [2018-11-18 13:01:04,149 INFO L226 Difference]: Without dead ends: 11086 [2018-11-18 13:01:04,154 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-18 13:01:04,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11086 states. [2018-11-18 13:01:04,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11086 to 9277. [2018-11-18 13:01:04,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9277 states. [2018-11-18 13:01:04,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9277 states to 9277 states and 13050 transitions. [2018-11-18 13:01:04,286 INFO L78 Accepts]: Start accepts. Automaton has 9277 states and 13050 transitions. Word has length 52 [2018-11-18 13:01:04,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:04,287 INFO L480 AbstractCegarLoop]: Abstraction has 9277 states and 13050 transitions. [2018-11-18 13:01:04,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 13:01:04,287 INFO L276 IsEmpty]: Start isEmpty. Operand 9277 states and 13050 transitions. [2018-11-18 13:01:04,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-18 13:01:04,288 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:04,288 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:04,289 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:04,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:04,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1990383130, now seen corresponding path program 4 times [2018-11-18 13:01:04,289 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:04,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:04,290 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:01:04,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:04,290 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:04,341 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:04,341 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:04,341 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:04,342 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:04,342 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:04,342 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:04,342 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:04,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:04,353 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 13:01:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:04,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:04,380 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:04,380 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:04,451 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:04,467 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:04,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2018-11-18 13:01:04,467 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:04,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 13:01:04,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 13:01:04,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-18 13:01:04,467 INFO L87 Difference]: Start difference. First operand 9277 states and 13050 transitions. Second operand 7 states. [2018-11-18 13:01:04,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:04,598 INFO L93 Difference]: Finished difference Result 14212 states and 20329 transitions. [2018-11-18 13:01:04,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 13:01:04,598 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2018-11-18 13:01:04,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:04,609 INFO L225 Difference]: With dead ends: 14212 [2018-11-18 13:01:04,609 INFO L226 Difference]: Without dead ends: 14210 [2018-11-18 13:01:04,614 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-18 13:01:04,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14210 states. [2018-11-18 13:01:04,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14210 to 11739. [2018-11-18 13:01:04,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11739 states. [2018-11-18 13:01:04,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11739 states to 11739 states and 16429 transitions. [2018-11-18 13:01:04,783 INFO L78 Accepts]: Start accepts. Automaton has 11739 states and 16429 transitions. Word has length 54 [2018-11-18 13:01:04,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:04,784 INFO L480 AbstractCegarLoop]: Abstraction has 11739 states and 16429 transitions. [2018-11-18 13:01:04,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 13:01:04,784 INFO L276 IsEmpty]: Start isEmpty. Operand 11739 states and 16429 transitions. [2018-11-18 13:01:04,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-11-18 13:01:04,786 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:04,786 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:04,787 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:04,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:04,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1774150148, now seen corresponding path program 5 times [2018-11-18 13:01:04,787 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:04,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:04,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:04,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:04,788 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:04,844 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:04,844 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:04,844 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:04,844 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:04,845 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:04,845 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:04,845 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:04,861 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 13:01:04,861 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 13:01:04,876 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-18 13:01:04,876 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:01:04,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:04,883 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:04,883 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:04,943 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:04,958 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:04,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2018-11-18 13:01:04,958 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:04,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 13:01:04,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 13:01:04,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-18 13:01:04,959 INFO L87 Difference]: Start difference. First operand 11739 states and 16429 transitions. Second operand 8 states. [2018-11-18 13:01:05,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:05,136 INFO L93 Difference]: Finished difference Result 16654 states and 23533 transitions. [2018-11-18 13:01:05,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 13:01:05,136 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2018-11-18 13:01:05,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:05,148 INFO L225 Difference]: With dead ends: 16654 [2018-11-18 13:01:05,148 INFO L226 Difference]: Without dead ends: 16653 [2018-11-18 13:01:05,153 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-18 13:01:05,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16653 states. [2018-11-18 13:01:05,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16653 to 12511. [2018-11-18 13:01:05,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12511 states. [2018-11-18 13:01:05,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12511 states to 12511 states and 17517 transitions. [2018-11-18 13:01:05,329 INFO L78 Accepts]: Start accepts. Automaton has 12511 states and 17517 transitions. Word has length 59 [2018-11-18 13:01:05,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:05,329 INFO L480 AbstractCegarLoop]: Abstraction has 12511 states and 17517 transitions. [2018-11-18 13:01:05,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 13:01:05,329 INFO L276 IsEmpty]: Start isEmpty. Operand 12511 states and 17517 transitions. [2018-11-18 13:01:05,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-18 13:01:05,331 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:05,331 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:05,332 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:05,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:05,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1469354459, now seen corresponding path program 6 times [2018-11-18 13:01:05,332 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:05,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:05,333 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:01:05,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:05,333 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:05,402 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:05,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:05,402 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:05,402 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:05,402 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:05,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:05,402 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:05,419 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 13:01:05,419 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-18 13:01:05,432 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 13:01:05,432 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:01:05,434 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:05,439 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:05,440 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:05,550 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:05,576 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:05,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2018-11-18 13:01:05,576 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:05,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 13:01:05,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 13:01:05,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-18 13:01:05,577 INFO L87 Difference]: Start difference. First operand 12511 states and 17517 transitions. Second operand 9 states. [2018-11-18 13:01:05,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:05,777 INFO L93 Difference]: Finished difference Result 17840 states and 25381 transitions. [2018-11-18 13:01:05,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 13:01:05,777 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2018-11-18 13:01:05,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:05,790 INFO L225 Difference]: With dead ends: 17840 [2018-11-18 13:01:05,790 INFO L226 Difference]: Without dead ends: 17838 [2018-11-18 13:01:05,795 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-18 13:01:05,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17838 states. [2018-11-18 13:01:06,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17838 to 15117. [2018-11-18 13:01:06,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15117 states. [2018-11-18 13:01:06,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15117 states to 15117 states and 21085 transitions. [2018-11-18 13:01:06,034 INFO L78 Accepts]: Start accepts. Automaton has 15117 states and 21085 transitions. Word has length 60 [2018-11-18 13:01:06,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:06,034 INFO L480 AbstractCegarLoop]: Abstraction has 15117 states and 21085 transitions. [2018-11-18 13:01:06,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 13:01:06,034 INFO L276 IsEmpty]: Start isEmpty. Operand 15117 states and 21085 transitions. [2018-11-18 13:01:06,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-18 13:01:06,036 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:06,036 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:06,037 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:06,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:06,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1169136107, now seen corresponding path program 4 times [2018-11-18 13:01:06,037 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:06,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:06,038 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:01:06,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:06,038 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:06,092 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:06,092 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:06,093 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:06,093 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:06,093 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:06,093 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:06,093 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:06,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:06,105 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 13:01:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:06,116 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:06,119 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:06,120 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:06,150 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:06,165 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:06,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2018-11-18 13:01:06,166 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:06,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 13:01:06,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 13:01:06,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-18 13:01:06,167 INFO L87 Difference]: Start difference. First operand 15117 states and 21085 transitions. Second operand 7 states. [2018-11-18 13:01:06,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:06,402 INFO L93 Difference]: Finished difference Result 22172 states and 31235 transitions. [2018-11-18 13:01:06,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 13:01:06,402 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2018-11-18 13:01:06,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:06,419 INFO L225 Difference]: With dead ends: 22172 [2018-11-18 13:01:06,419 INFO L226 Difference]: Without dead ends: 22171 [2018-11-18 13:01:06,425 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-18 13:01:06,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22171 states. [2018-11-18 13:01:06,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22171 to 16451. [2018-11-18 13:01:06,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16451 states. [2018-11-18 13:01:06,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16451 states to 16451 states and 22951 transitions. [2018-11-18 13:01:06,673 INFO L78 Accepts]: Start accepts. Automaton has 16451 states and 22951 transitions. Word has length 60 [2018-11-18 13:01:06,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:06,673 INFO L480 AbstractCegarLoop]: Abstraction has 16451 states and 22951 transitions. [2018-11-18 13:01:06,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 13:01:06,673 INFO L276 IsEmpty]: Start isEmpty. Operand 16451 states and 22951 transitions. [2018-11-18 13:01:06,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-18 13:01:06,675 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:06,675 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:06,676 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:06,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:06,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1717205052, now seen corresponding path program 5 times [2018-11-18 13:01:06,676 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:06,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:06,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:06,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:06,677 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:06,760 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:06,760 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:06,760 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:06,760 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:06,760 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:06,761 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:06,761 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:06,779 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 13:01:06,779 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 13:01:06,793 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-18 13:01:06,793 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:01:06,795 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:06,800 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:06,801 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:06,914 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:06,938 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:06,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2018-11-18 13:01:06,938 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:06,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 13:01:06,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 13:01:06,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-18 13:01:06,939 INFO L87 Difference]: Start difference. First operand 16451 states and 22951 transitions. Second operand 8 states. [2018-11-18 13:01:07,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:07,284 INFO L93 Difference]: Finished difference Result 24218 states and 34362 transitions. [2018-11-18 13:01:07,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 13:01:07,285 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 64 [2018-11-18 13:01:07,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:07,302 INFO L225 Difference]: With dead ends: 24218 [2018-11-18 13:01:07,302 INFO L226 Difference]: Without dead ends: 24216 [2018-11-18 13:01:07,305 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-18 13:01:07,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24216 states. [2018-11-18 13:01:07,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24216 to 20289. [2018-11-18 13:01:07,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20289 states. [2018-11-18 13:01:07,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20289 states to 20289 states and 28180 transitions. [2018-11-18 13:01:07,584 INFO L78 Accepts]: Start accepts. Automaton has 20289 states and 28180 transitions. Word has length 64 [2018-11-18 13:01:07,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:07,584 INFO L480 AbstractCegarLoop]: Abstraction has 20289 states and 28180 transitions. [2018-11-18 13:01:07,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 13:01:07,584 INFO L276 IsEmpty]: Start isEmpty. Operand 20289 states and 28180 transitions. [2018-11-18 13:01:07,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-11-18 13:01:07,586 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:07,586 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:07,586 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:07,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:07,586 INFO L82 PathProgramCache]: Analyzing trace with hash -840726130, now seen corresponding path program 7 times [2018-11-18 13:01:07,586 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:07,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:07,587 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:01:07,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:07,587 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:07,683 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:07,683 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:07,683 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:07,683 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:07,684 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:07,684 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:07,684 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:07,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:07,695 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 13:01:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:07,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:07,709 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:07,709 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:07,777 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:07,792 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:07,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2018-11-18 13:01:07,792 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:07,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 13:01:07,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 13:01:07,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-18 13:01:07,792 INFO L87 Difference]: Start difference. First operand 20289 states and 28180 transitions. Second operand 10 states. [2018-11-18 13:01:08,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:08,037 INFO L93 Difference]: Finished difference Result 28015 states and 39542 transitions. [2018-11-18 13:01:08,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 13:01:08,038 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2018-11-18 13:01:08,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:08,060 INFO L225 Difference]: With dead ends: 28015 [2018-11-18 13:01:08,060 INFO L226 Difference]: Without dead ends: 28013 [2018-11-18 13:01:08,066 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-18 13:01:08,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28013 states. [2018-11-18 13:01:08,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28013 to 23851. [2018-11-18 13:01:08,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23851 states. [2018-11-18 13:01:08,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23851 states to 23851 states and 33013 transitions. [2018-11-18 13:01:08,419 INFO L78 Accepts]: Start accepts. Automaton has 23851 states and 33013 transitions. Word has length 68 [2018-11-18 13:01:08,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:08,419 INFO L480 AbstractCegarLoop]: Abstraction has 23851 states and 33013 transitions. [2018-11-18 13:01:08,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 13:01:08,419 INFO L276 IsEmpty]: Start isEmpty. Operand 23851 states and 33013 transitions. [2018-11-18 13:01:08,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-11-18 13:01:08,420 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:08,420 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:08,421 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:08,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:08,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1096613876, now seen corresponding path program 6 times [2018-11-18 13:01:08,421 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:08,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:08,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:08,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:08,421 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:08,487 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:08,487 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:08,488 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:08,488 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:08,488 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:08,488 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:08,488 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:08,501 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 13:01:08,502 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-18 13:01:08,513 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 13:01:08,513 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:01:08,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:08,520 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:08,520 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:08,578 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:08,593 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:08,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2018-11-18 13:01:08,593 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:08,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 13:01:08,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 13:01:08,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-18 13:01:08,594 INFO L87 Difference]: Start difference. First operand 23851 states and 33013 transitions. Second operand 9 states. [2018-11-18 13:01:08,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:08,901 INFO L93 Difference]: Finished difference Result 35167 states and 49144 transitions. [2018-11-18 13:01:08,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 13:01:08,901 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2018-11-18 13:01:08,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:08,928 INFO L225 Difference]: With dead ends: 35167 [2018-11-18 13:01:08,928 INFO L226 Difference]: Without dead ends: 35166 [2018-11-18 13:01:08,934 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-18 13:01:08,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35166 states. [2018-11-18 13:01:09,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35166 to 25341. [2018-11-18 13:01:09,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25341 states. [2018-11-18 13:01:09,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25341 states to 25341 states and 35098 transitions. [2018-11-18 13:01:09,397 INFO L78 Accepts]: Start accepts. Automaton has 25341 states and 35098 transitions. Word has length 68 [2018-11-18 13:01:09,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:09,398 INFO L480 AbstractCegarLoop]: Abstraction has 25341 states and 35098 transitions. [2018-11-18 13:01:09,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 13:01:09,398 INFO L276 IsEmpty]: Start isEmpty. Operand 25341 states and 35098 transitions. [2018-11-18 13:01:09,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-11-18 13:01:09,400 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:09,400 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:09,400 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:09,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:09,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1181636900, now seen corresponding path program 5 times [2018-11-18 13:01:09,401 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:09,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:09,401 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:01:09,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:09,402 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:09,435 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:09,435 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:09,435 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:09,435 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:09,435 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:09,435 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:09,436 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:09,441 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 13:01:09,441 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 13:01:09,451 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-18 13:01:09,451 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:01:09,452 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:09,458 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:09,458 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:09,494 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:09,508 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:09,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2018-11-18 13:01:09,508 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:09,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 13:01:09,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 13:01:09,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-18 13:01:09,509 INFO L87 Difference]: Start difference. First operand 25341 states and 35098 transitions. Second operand 8 states. [2018-11-18 13:01:09,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:09,836 INFO L93 Difference]: Finished difference Result 35917 states and 50266 transitions. [2018-11-18 13:01:09,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 13:01:09,836 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2018-11-18 13:01:09,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:09,863 INFO L225 Difference]: With dead ends: 35917 [2018-11-18 13:01:09,863 INFO L226 Difference]: Without dead ends: 35916 [2018-11-18 13:01:09,869 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-18 13:01:09,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35916 states. [2018-11-18 13:01:10,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35916 to 27007. [2018-11-18 13:01:10,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27007 states. [2018-11-18 13:01:10,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27007 states to 27007 states and 37422 transitions. [2018-11-18 13:01:10,250 INFO L78 Accepts]: Start accepts. Automaton has 27007 states and 37422 transitions. Word has length 71 [2018-11-18 13:01:10,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:10,250 INFO L480 AbstractCegarLoop]: Abstraction has 27007 states and 37422 transitions. [2018-11-18 13:01:10,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 13:01:10,250 INFO L276 IsEmpty]: Start isEmpty. Operand 27007 states and 37422 transitions. [2018-11-18 13:01:10,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-11-18 13:01:10,252 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:10,252 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:10,252 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:10,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:10,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1637723374, now seen corresponding path program 6 times [2018-11-18 13:01:10,252 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:10,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:10,252 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:01:10,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:10,253 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:10,322 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:10,322 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:10,322 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:10,323 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:10,323 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:10,323 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:10,323 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:10,339 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 13:01:10,339 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-18 13:01:10,360 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 13:01:10,360 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:01:10,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:10,370 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:10,371 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:10,450 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:10,469 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:10,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2018-11-18 13:01:10,469 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:10,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 13:01:10,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 13:01:10,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-18 13:01:10,470 INFO L87 Difference]: Start difference. First operand 27007 states and 37422 transitions. Second operand 9 states. [2018-11-18 13:01:10,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:10,867 INFO L93 Difference]: Finished difference Result 38471 states and 54211 transitions. [2018-11-18 13:01:10,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 13:01:10,867 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 74 [2018-11-18 13:01:10,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:10,893 INFO L225 Difference]: With dead ends: 38471 [2018-11-18 13:01:10,893 INFO L226 Difference]: Without dead ends: 38469 [2018-11-18 13:01:10,900 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-18 13:01:10,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38469 states. [2018-11-18 13:01:11,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38469 to 32634. [2018-11-18 13:01:11,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32634 states. [2018-11-18 13:01:11,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32634 states to 32634 states and 45046 transitions. [2018-11-18 13:01:11,345 INFO L78 Accepts]: Start accepts. Automaton has 32634 states and 45046 transitions. Word has length 74 [2018-11-18 13:01:11,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:11,345 INFO L480 AbstractCegarLoop]: Abstraction has 32634 states and 45046 transitions. [2018-11-18 13:01:11,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 13:01:11,346 INFO L276 IsEmpty]: Start isEmpty. Operand 32634 states and 45046 transitions. [2018-11-18 13:01:11,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-11-18 13:01:11,347 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:11,347 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:11,348 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:11,348 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:11,348 INFO L82 PathProgramCache]: Analyzing trace with hash -920314303, now seen corresponding path program 8 times [2018-11-18 13:01:11,348 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:11,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:11,348 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:01:11,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:11,348 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:11,431 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:11,431 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:11,431 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:11,431 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:11,432 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:11,432 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:11,443 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 13:01:11,443 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 13:01:11,488 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-11-18 13:01:11,488 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:01:11,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:11,496 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:11,497 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:11,607 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:11,622 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:11,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2018-11-18 13:01:11,622 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:11,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 13:01:11,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 13:01:11,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-11-18 13:01:11,623 INFO L87 Difference]: Start difference. First operand 32634 states and 45046 transitions. Second operand 11 states. [2018-11-18 13:01:12,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:12,079 INFO L93 Difference]: Finished difference Result 43991 states and 61696 transitions. [2018-11-18 13:01:12,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 13:01:12,079 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2018-11-18 13:01:12,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:12,194 INFO L225 Difference]: With dead ends: 43991 [2018-11-18 13:01:12,194 INFO L226 Difference]: Without dead ends: 43989 [2018-11-18 13:01:12,198 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-11-18 13:01:12,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43989 states. [2018-11-18 13:01:12,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43989 to 37888. [2018-11-18 13:01:12,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37888 states. [2018-11-18 13:01:12,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37888 states to 37888 states and 52141 transitions. [2018-11-18 13:01:12,686 INFO L78 Accepts]: Start accepts. Automaton has 37888 states and 52141 transitions. Word has length 76 [2018-11-18 13:01:12,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:12,686 INFO L480 AbstractCegarLoop]: Abstraction has 37888 states and 52141 transitions. [2018-11-18 13:01:12,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 13:01:12,686 INFO L276 IsEmpty]: Start isEmpty. Operand 37888 states and 52141 transitions. [2018-11-18 13:01:12,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-11-18 13:01:12,689 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:12,689 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:12,689 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:12,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:12,689 INFO L82 PathProgramCache]: Analyzing trace with hash 792505092, now seen corresponding path program 7 times [2018-11-18 13:01:12,689 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:12,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:12,690 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:01:12,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:12,690 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:12,773 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:12,773 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:12,773 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:12,773 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:12,773 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:12,773 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:12,773 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:12,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:12,797 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 13:01:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:12,809 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:12,817 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:12,817 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:12,924 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:12,939 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:12,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2018-11-18 13:01:12,939 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:12,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 13:01:12,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 13:01:12,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-18 13:01:12,940 INFO L87 Difference]: Start difference. First operand 37888 states and 52141 transitions. Second operand 10 states. [2018-11-18 13:01:13,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:13,361 INFO L93 Difference]: Finished difference Result 54536 states and 75804 transitions. [2018-11-18 13:01:13,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 13:01:13,361 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2018-11-18 13:01:13,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:13,402 INFO L225 Difference]: With dead ends: 54536 [2018-11-18 13:01:13,402 INFO L226 Difference]: Without dead ends: 54535 [2018-11-18 13:01:13,411 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-18 13:01:13,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54535 states. [2018-11-18 13:01:14,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54535 to 39807. [2018-11-18 13:01:14,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39807 states. [2018-11-18 13:01:14,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39807 states to 39807 states and 54817 transitions. [2018-11-18 13:01:14,081 INFO L78 Accepts]: Start accepts. Automaton has 39807 states and 54817 transitions. Word has length 77 [2018-11-18 13:01:14,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:14,082 INFO L480 AbstractCegarLoop]: Abstraction has 39807 states and 54817 transitions. [2018-11-18 13:01:14,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 13:01:14,082 INFO L276 IsEmpty]: Start isEmpty. Operand 39807 states and 54817 transitions. [2018-11-18 13:01:14,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-11-18 13:01:14,084 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:14,084 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:14,084 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:14,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:14,085 INFO L82 PathProgramCache]: Analyzing trace with hash 160642741, now seen corresponding path program 6 times [2018-11-18 13:01:14,085 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:14,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:14,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:14,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:14,085 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:14,151 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:14,151 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:14,151 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:14,152 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:14,152 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:14,152 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:14,152 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:14,162 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 13:01:14,162 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-18 13:01:14,172 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 13:01:14,172 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:01:14,173 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:14,178 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:14,179 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:14,235 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:14,250 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:14,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2018-11-18 13:01:14,250 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:14,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 13:01:14,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 13:01:14,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-18 13:01:14,251 INFO L87 Difference]: Start difference. First operand 39807 states and 54817 transitions. Second operand 9 states. [2018-11-18 13:01:14,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:14,712 INFO L93 Difference]: Finished difference Result 54859 states and 76349 transitions. [2018-11-18 13:01:14,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 13:01:14,712 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2018-11-18 13:01:14,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:14,753 INFO L225 Difference]: With dead ends: 54859 [2018-11-18 13:01:14,753 INFO L226 Difference]: Without dead ends: 54858 [2018-11-18 13:01:14,761 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-18 13:01:14,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54858 states. [2018-11-18 13:01:15,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54858 to 41839. [2018-11-18 13:01:15,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41839 states. [2018-11-18 13:01:15,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41839 states to 41839 states and 57645 transitions. [2018-11-18 13:01:15,532 INFO L78 Accepts]: Start accepts. Automaton has 41839 states and 57645 transitions. Word has length 82 [2018-11-18 13:01:15,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:15,532 INFO L480 AbstractCegarLoop]: Abstraction has 41839 states and 57645 transitions. [2018-11-18 13:01:15,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 13:01:15,532 INFO L276 IsEmpty]: Start isEmpty. Operand 41839 states and 57645 transitions. [2018-11-18 13:01:15,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-11-18 13:01:15,535 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:15,535 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:15,535 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:15,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:15,535 INFO L82 PathProgramCache]: Analyzing trace with hash 795627508, now seen corresponding path program 9 times [2018-11-18 13:01:15,535 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:15,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:15,536 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:01:15,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:15,536 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:15,603 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:15,603 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:15,603 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:15,603 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:15,603 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:15,603 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:15,603 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:15,610 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 13:01:15,610 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-18 13:01:15,621 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 13:01:15,621 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:01:15,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:15,629 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:15,629 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:15,717 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:15,732 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:15,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2018-11-18 13:01:15,732 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:15,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 13:01:15,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 13:01:15,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-18 13:01:15,733 INFO L87 Difference]: Start difference. First operand 41839 states and 57645 transitions. Second operand 12 states. [2018-11-18 13:01:16,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:16,218 INFO L93 Difference]: Finished difference Result 55263 states and 77324 transitions. [2018-11-18 13:01:16,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 13:01:16,218 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2018-11-18 13:01:16,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:16,265 INFO L225 Difference]: With dead ends: 55263 [2018-11-18 13:01:16,265 INFO L226 Difference]: Without dead ends: 55261 [2018-11-18 13:01:16,275 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-18 13:01:16,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55261 states. [2018-11-18 13:01:16,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55261 to 48062. [2018-11-18 13:01:16,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48062 states. [2018-11-18 13:01:16,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48062 states to 48062 states and 66044 transitions. [2018-11-18 13:01:16,986 INFO L78 Accepts]: Start accepts. Automaton has 48062 states and 66044 transitions. Word has length 84 [2018-11-18 13:01:16,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:16,987 INFO L480 AbstractCegarLoop]: Abstraction has 48062 states and 66044 transitions. [2018-11-18 13:01:16,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 13:01:16,987 INFO L276 IsEmpty]: Start isEmpty. Operand 48062 states and 66044 transitions. [2018-11-18 13:01:16,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-11-18 13:01:16,991 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:16,991 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:16,991 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:16,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:16,991 INFO L82 PathProgramCache]: Analyzing trace with hash 250668440, now seen corresponding path program 7 times [2018-11-18 13:01:16,991 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:16,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:16,992 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:01:16,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:16,992 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:17,076 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:17,076 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:17,076 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:17,076 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:17,077 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:17,077 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:17,077 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:17,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:17,093 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 13:01:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:17,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:17,116 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:17,116 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:17,357 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:17,372 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:17,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2018-11-18 13:01:17,372 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:17,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 13:01:17,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 13:01:17,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-18 13:01:17,373 INFO L87 Difference]: Start difference. First operand 48062 states and 66044 transitions. Second operand 10 states. [2018-11-18 13:01:18,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:18,063 INFO L93 Difference]: Finished difference Result 66587 states and 93042 transitions. [2018-11-18 13:01:18,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 13:01:18,063 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2018-11-18 13:01:18,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:18,123 INFO L225 Difference]: With dead ends: 66587 [2018-11-18 13:01:18,124 INFO L226 Difference]: Without dead ends: 66585 [2018-11-18 13:01:18,134 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-18 13:01:18,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66585 states. [2018-11-18 13:01:18,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66585 to 57114. [2018-11-18 13:01:18,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57114 states. [2018-11-18 13:01:18,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57114 states to 57114 states and 78223 transitions. [2018-11-18 13:01:18,995 INFO L78 Accepts]: Start accepts. Automaton has 57114 states and 78223 transitions. Word has length 84 [2018-11-18 13:01:18,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:18,995 INFO L480 AbstractCegarLoop]: Abstraction has 57114 states and 78223 transitions. [2018-11-18 13:01:18,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 13:01:18,995 INFO L276 IsEmpty]: Start isEmpty. Operand 57114 states and 78223 transitions. [2018-11-18 13:01:18,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-11-18 13:01:18,998 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:18,998 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:18,998 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:18,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:18,999 INFO L82 PathProgramCache]: Analyzing trace with hash -955787508, now seen corresponding path program 8 times [2018-11-18 13:01:18,999 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:18,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:18,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:19,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:19,000 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:19,071 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:19,071 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:19,071 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:19,071 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:19,071 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:19,071 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:19,071 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:19,078 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 13:01:19,078 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 13:01:19,094 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-11-18 13:01:19,094 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:01:19,095 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:19,101 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:19,101 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:19,187 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:19,202 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:19,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2018-11-18 13:01:19,202 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:19,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 13:01:19,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 13:01:19,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-11-18 13:01:19,203 INFO L87 Difference]: Start difference. First operand 57114 states and 78223 transitions. Second operand 11 states. [2018-11-18 13:01:20,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:20,018 INFO L93 Difference]: Finished difference Result 80500 states and 111382 transitions. [2018-11-18 13:01:20,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 13:01:20,019 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 86 [2018-11-18 13:01:20,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:20,079 INFO L225 Difference]: With dead ends: 80500 [2018-11-18 13:01:20,079 INFO L226 Difference]: Without dead ends: 80499 [2018-11-18 13:01:20,087 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-11-18 13:01:20,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80499 states. [2018-11-18 13:01:20,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80499 to 59511. [2018-11-18 13:01:20,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59511 states. [2018-11-18 13:01:21,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59511 states to 59511 states and 81556 transitions. [2018-11-18 13:01:21,000 INFO L78 Accepts]: Start accepts. Automaton has 59511 states and 81556 transitions. Word has length 86 [2018-11-18 13:01:21,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:21,000 INFO L480 AbstractCegarLoop]: Abstraction has 59511 states and 81556 transitions. [2018-11-18 13:01:21,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 13:01:21,000 INFO L276 IsEmpty]: Start isEmpty. Operand 59511 states and 81556 transitions. [2018-11-18 13:01:21,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-11-18 13:01:21,004 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:21,004 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:21,004 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:21,004 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:21,005 INFO L82 PathProgramCache]: Analyzing trace with hash 600579751, now seen corresponding path program 10 times [2018-11-18 13:01:21,005 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:21,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:21,005 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:01:21,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:21,005 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:21,088 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:21,088 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:21,088 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:21,088 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:21,088 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:21,088 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:21,088 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:21,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:21,096 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 13:01:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:21,107 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:21,113 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:21,113 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:21,220 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:21,235 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:21,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2018-11-18 13:01:21,235 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:21,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 13:01:21,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 13:01:21,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-11-18 13:01:21,236 INFO L87 Difference]: Start difference. First operand 59511 states and 81556 transitions. Second operand 13 states. [2018-11-18 13:01:21,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:21,895 INFO L93 Difference]: Finished difference Result 77226 states and 107448 transitions. [2018-11-18 13:01:21,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-18 13:01:21,895 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 92 [2018-11-18 13:01:21,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:21,960 INFO L225 Difference]: With dead ends: 77226 [2018-11-18 13:01:21,960 INFO L226 Difference]: Without dead ends: 77224 [2018-11-18 13:01:21,974 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-11-18 13:01:22,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77224 states. [2018-11-18 13:01:22,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77224 to 67739. [2018-11-18 13:01:22,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67739 states. [2018-11-18 13:01:23,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67739 states to 67739 states and 92615 transitions. [2018-11-18 13:01:23,057 INFO L78 Accepts]: Start accepts. Automaton has 67739 states and 92615 transitions. Word has length 92 [2018-11-18 13:01:23,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:23,057 INFO L480 AbstractCegarLoop]: Abstraction has 67739 states and 92615 transitions. [2018-11-18 13:01:23,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 13:01:23,057 INFO L276 IsEmpty]: Start isEmpty. Operand 67739 states and 92615 transitions. [2018-11-18 13:01:23,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-11-18 13:01:23,061 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:23,061 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:23,061 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:23,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:23,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1599136900, now seen corresponding path program 7 times [2018-11-18 13:01:23,062 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:23,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:23,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:23,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:23,063 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:23,132 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:23,133 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:23,133 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:23,133 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:23,133 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:23,133 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:23,133 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:23,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:23,143 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 13:01:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:23,155 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:23,162 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:23,162 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:23,241 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:23,256 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:23,256 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2018-11-18 13:01:23,256 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:23,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 13:01:23,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 13:01:23,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-18 13:01:23,256 INFO L87 Difference]: Start difference. First operand 67739 states and 92615 transitions. Second operand 10 states. [2018-11-18 13:01:24,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:24,063 INFO L93 Difference]: Finished difference Result 91168 states and 125991 transitions. [2018-11-18 13:01:24,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 13:01:24,063 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2018-11-18 13:01:24,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:24,141 INFO L225 Difference]: With dead ends: 91168 [2018-11-18 13:01:24,141 INFO L226 Difference]: Without dead ends: 91167 [2018-11-18 13:01:24,158 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-18 13:01:24,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91167 states. [2018-11-18 13:01:25,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91167 to 70507. [2018-11-18 13:01:25,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70507 states. [2018-11-18 13:01:25,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70507 states to 70507 states and 96451 transitions. [2018-11-18 13:01:25,467 INFO L78 Accepts]: Start accepts. Automaton has 70507 states and 96451 transitions. Word has length 93 [2018-11-18 13:01:25,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:25,467 INFO L480 AbstractCegarLoop]: Abstraction has 70507 states and 96451 transitions. [2018-11-18 13:01:25,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 13:01:25,467 INFO L276 IsEmpty]: Start isEmpty. Operand 70507 states and 96451 transitions. [2018-11-18 13:01:25,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-11-18 13:01:25,471 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:25,471 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:25,471 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:25,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:25,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1467797954, now seen corresponding path program 8 times [2018-11-18 13:01:25,471 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:25,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:25,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:25,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:25,472 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:25,522 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:25,522 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:25,522 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:25,522 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:25,522 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:25,522 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:25,530 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 13:01:25,530 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 13:01:25,545 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-11-18 13:01:25,545 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:01:25,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:25,556 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:25,556 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:25,625 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:25,640 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:25,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2018-11-18 13:01:25,640 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:25,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 13:01:25,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 13:01:25,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-11-18 13:01:25,641 INFO L87 Difference]: Start difference. First operand 70507 states and 96451 transitions. Second operand 11 states. [2018-11-18 13:01:26,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:26,442 INFO L93 Difference]: Finished difference Result 95408 states and 132669 transitions. [2018-11-18 13:01:26,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 13:01:26,443 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 94 [2018-11-18 13:01:26,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:26,525 INFO L225 Difference]: With dead ends: 95408 [2018-11-18 13:01:26,525 INFO L226 Difference]: Without dead ends: 95406 [2018-11-18 13:01:26,541 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-11-18 13:01:26,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95406 states. [2018-11-18 13:01:27,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95406 to 82627. [2018-11-18 13:01:27,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82627 states. [2018-11-18 13:01:27,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82627 states to 82627 states and 112705 transitions. [2018-11-18 13:01:27,775 INFO L78 Accepts]: Start accepts. Automaton has 82627 states and 112705 transitions. Word has length 94 [2018-11-18 13:01:27,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:27,776 INFO L480 AbstractCegarLoop]: Abstraction has 82627 states and 112705 transitions. [2018-11-18 13:01:27,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 13:01:27,776 INFO L276 IsEmpty]: Start isEmpty. Operand 82627 states and 112705 transitions. [2018-11-18 13:01:27,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-11-18 13:01:27,780 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:27,780 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:27,780 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:27,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:27,780 INFO L82 PathProgramCache]: Analyzing trace with hash 89764868, now seen corresponding path program 9 times [2018-11-18 13:01:27,780 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:27,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:27,781 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:01:27,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:27,781 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:27,877 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 0 proven. 405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:27,877 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:27,877 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:27,877 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:27,878 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:27,878 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:27,878 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:27,889 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 13:01:27,889 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-18 13:01:27,903 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 13:01:27,903 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:01:27,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:27,917 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 0 proven. 405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:27,918 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:28,003 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 0 proven. 405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:28,018 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:28,018 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2018-11-18 13:01:28,018 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:28,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 13:01:28,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 13:01:28,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-18 13:01:28,019 INFO L87 Difference]: Start difference. First operand 82627 states and 112705 transitions. Second operand 12 states. [2018-11-18 13:01:29,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:29,177 INFO L93 Difference]: Finished difference Result 114316 states and 157543 transitions. [2018-11-18 13:01:29,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 13:01:29,177 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 95 [2018-11-18 13:01:29,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:29,282 INFO L225 Difference]: With dead ends: 114316 [2018-11-18 13:01:29,282 INFO L226 Difference]: Without dead ends: 114315 [2018-11-18 13:01:29,302 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-18 13:01:29,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114315 states. [2018-11-18 13:01:30,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114315 to 85551. [2018-11-18 13:01:30,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85551 states. [2018-11-18 13:01:30,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85551 states to 85551 states and 116761 transitions. [2018-11-18 13:01:30,699 INFO L78 Accepts]: Start accepts. Automaton has 85551 states and 116761 transitions. Word has length 95 [2018-11-18 13:01:30,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:30,699 INFO L480 AbstractCegarLoop]: Abstraction has 85551 states and 116761 transitions. [2018-11-18 13:01:30,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 13:01:30,699 INFO L276 IsEmpty]: Start isEmpty. Operand 85551 states and 116761 transitions. [2018-11-18 13:01:30,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-11-18 13:01:30,704 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:30,704 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:30,705 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:30,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:30,705 INFO L82 PathProgramCache]: Analyzing trace with hash 106400346, now seen corresponding path program 11 times [2018-11-18 13:01:30,705 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:30,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:30,705 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:01:30,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:30,705 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:30,779 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 0 proven. 517 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:30,780 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:30,780 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:30,780 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:30,780 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:30,780 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:30,780 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:30,789 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 13:01:30,789 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 13:01:30,805 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-11-18 13:01:30,805 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:01:30,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:31,008 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 517 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:31,008 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:31,147 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 517 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:31,162 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-18 13:01:31,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [13] total 38 [2018-11-18 13:01:31,162 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:01:31,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 13:01:31,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 13:01:31,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2018-11-18 13:01:31,163 INFO L87 Difference]: Start difference. First operand 85551 states and 116761 transitions. Second operand 14 states. [2018-11-18 13:01:31,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:31,712 INFO L93 Difference]: Finished difference Result 105885 states and 143432 transitions. [2018-11-18 13:01:31,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-18 13:01:31,712 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 100 [2018-11-18 13:01:31,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:31,713 INFO L225 Difference]: With dead ends: 105885 [2018-11-18 13:01:31,713 INFO L226 Difference]: Without dead ends: 546 [2018-11-18 13:01:31,779 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2018-11-18 13:01:31,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2018-11-18 13:01:31,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 337. [2018-11-18 13:01:31,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-11-18 13:01:31,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 375 transitions. [2018-11-18 13:01:31,788 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 375 transitions. Word has length 100 [2018-11-18 13:01:31,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:31,788 INFO L480 AbstractCegarLoop]: Abstraction has 337 states and 375 transitions. [2018-11-18 13:01:31,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 13:01:31,788 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 375 transitions. [2018-11-18 13:01:31,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-11-18 13:01:31,789 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:31,789 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:31,789 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:31,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:31,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1188679509, now seen corresponding path program 8 times [2018-11-18 13:01:31,789 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:31,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:31,790 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:01:31,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:31,790 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:31,851 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:31,852 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:31,852 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:31,852 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:31,852 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:31,852 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:31,852 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:31,859 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 13:01:31,859 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 13:01:31,874 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-11-18 13:01:31,874 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:01:31,875 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:31,884 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:31,884 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:31,967 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:31,982 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:31,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2018-11-18 13:01:31,982 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:31,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 13:01:31,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 13:01:31,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-11-18 13:01:31,983 INFO L87 Difference]: Start difference. First operand 337 states and 375 transitions. Second operand 11 states. [2018-11-18 13:01:32,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:32,074 INFO L93 Difference]: Finished difference Result 360 states and 397 transitions. [2018-11-18 13:01:32,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 13:01:32,080 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2018-11-18 13:01:32,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:32,081 INFO L225 Difference]: With dead ends: 360 [2018-11-18 13:01:32,081 INFO L226 Difference]: Without dead ends: 211 [2018-11-18 13:01:32,081 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-11-18 13:01:32,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-11-18 13:01:32,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-11-18 13:01:32,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-11-18 13:01:32,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 210 transitions. [2018-11-18 13:01:32,087 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 210 transitions. Word has length 104 [2018-11-18 13:01:32,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:32,087 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 210 transitions. [2018-11-18 13:01:32,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 13:01:32,087 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 210 transitions. [2018-11-18 13:01:32,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-11-18 13:01:32,087 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:32,087 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:32,088 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:32,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:32,089 INFO L82 PathProgramCache]: Analyzing trace with hash -258535060, now seen corresponding path program 9 times [2018-11-18 13:01:32,089 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:32,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:32,090 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:01:32,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:32,090 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:32,215 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:32,215 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:32,216 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:32,216 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:32,216 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:32,216 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:32,219 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:32,228 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 13:01:32,229 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-18 13:01:32,250 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 13:01:32,250 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:01:32,252 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:32,262 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:32,263 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:32,377 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:32,391 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:32,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2018-11-18 13:01:32,391 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:32,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 13:01:32,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 13:01:32,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-18 13:01:32,392 INFO L87 Difference]: Start difference. First operand 211 states and 210 transitions. Second operand 12 states. [2018-11-18 13:01:32,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:32,408 INFO L93 Difference]: Finished difference Result 211 states and 210 transitions. [2018-11-18 13:01:32,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 13:01:32,408 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2018-11-18 13:01:32,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:32,409 INFO L225 Difference]: With dead ends: 211 [2018-11-18 13:01:32,409 INFO L226 Difference]: Without dead ends: 116 [2018-11-18 13:01:32,409 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-18 13:01:32,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-11-18 13:01:32,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-11-18 13:01:32,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-11-18 13:01:32,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 115 transitions. [2018-11-18 13:01:32,412 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 115 transitions. Word has length 104 [2018-11-18 13:01:32,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:32,413 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 115 transitions. [2018-11-18 13:01:32,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 13:01:32,413 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 115 transitions. [2018-11-18 13:01:32,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-11-18 13:01:32,413 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:32,413 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2018-11-18 13:01:32,413 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:01:32,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:32,414 INFO L82 PathProgramCache]: Analyzing trace with hash -2088589340, now seen corresponding path program 9 times [2018-11-18 13:01:32,414 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:32,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:32,414 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:01:32,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:32,414 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:32,481 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:32,481 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:32,481 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:32,482 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:01:32,482 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:01:32,482 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:32,482 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:32,487 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 13:01:32,488 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-18 13:01:32,503 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 13:01:32,503 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:01:32,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:32,520 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:32,520 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:01:32,622 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:01:32,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2018-11-18 13:01:32,622 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:01:32,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 13:01:32,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 13:01:32,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-18 13:01:32,623 INFO L87 Difference]: Start difference. First operand 116 states and 115 transitions. Second operand 12 states. [2018-11-18 13:01:32,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:32,636 INFO L93 Difference]: Finished difference Result 116 states and 115 transitions. [2018-11-18 13:01:32,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 13:01:32,636 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 115 [2018-11-18 13:01:32,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:32,636 INFO L225 Difference]: With dead ends: 116 [2018-11-18 13:01:32,636 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 13:01:32,637 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-18 13:01:32,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 13:01:32,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 13:01:32,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 13:01:32,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 13:01:32,637 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 115 [2018-11-18 13:01:32,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:32,637 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 13:01:32,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 13:01:32,637 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 13:01:32,637 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 13:01:32,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 13:01:33,345 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:33,367 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:33,368 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:33,371 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:33,381 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:33,471 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:33,597 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:33,601 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:33,634 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:33,654 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:33,663 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:33,699 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:33,775 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:33,781 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:33,790 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:33,818 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:33,906 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:33,911 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:33,911 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:33,929 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:34,051 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:34,057 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:34,073 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:34,079 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:34,097 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:34,103 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:34,143 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:34,233 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:34,268 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:34,269 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:34,300 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:34,325 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:34,476 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:34,884 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:35,017 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:35,149 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:35,253 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:35,383 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:35,504 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:35,540 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:35,540 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:35,608 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:35,708 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:36,002 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:36,160 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:36,179 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:36,198 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:36,336 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:36,421 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:36,574 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:36,643 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:36,783 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:37,511 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:38,338 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:38,690 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:38,697 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:38,704 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:38,711 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:38,796 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:38,821 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:38,848 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:39,192 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:39,413 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:39,446 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:40,100 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:40,151 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:40,355 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:40,959 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:41,006 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:41,511 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:41,720 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:41,739 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:42,026 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:42,661 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:42,774 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:43,151 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:43,412 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:45,008 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:45,609 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:47,465 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:47,542 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:48,174 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:48,767 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:49,006 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:49,930 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:49,998 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:50,376 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:50,566 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:50,869 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:52,405 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:53,571 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:54,870 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:55,245 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:55,535 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:55,619 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:57,688 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:57,846 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:58,287 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:58,355 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:01:59,220 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:02:00,575 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:02:02,231 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:02:02,576 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:02:02,868 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:02:03,018 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 13:02:03,252 WARN L180 SmtUtils]: Spent 30.60 s on a formula simplification. DAG size of input: 3475 DAG size of output: 2312 [2018-11-18 13:02:58,840 WARN L180 SmtUtils]: Spent 55.56 s on a formula simplification. DAG size of input: 2062 DAG size of output: 348 [2018-11-18 13:02:58,844 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 13:02:58,844 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 13:02:58,844 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 13:02:58,844 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 13:02:58,844 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 13:02:58,844 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 13:02:58,844 INFO L425 ceAbstractionStarter]: For program point L27(lines 27 31) no Hoare annotation was computed. [2018-11-18 13:02:58,844 INFO L425 ceAbstractionStarter]: For program point mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2018-11-18 13:02:58,845 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 13 35) no Hoare annotation was computed. [2018-11-18 13:02:58,845 INFO L425 ceAbstractionStarter]: For program point L23(lines 23 31) no Hoare annotation was computed. [2018-11-18 13:02:58,845 INFO L425 ceAbstractionStarter]: For program point L19-1(lines 19 33) no Hoare annotation was computed. [2018-11-18 13:02:58,845 INFO L425 ceAbstractionStarter]: For program point L19-3(lines 19 33) no Hoare annotation was computed. [2018-11-18 13:02:58,845 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-18 13:02:58,845 INFO L425 ceAbstractionStarter]: For program point mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2018-11-18 13:02:58,845 INFO L425 ceAbstractionStarter]: For program point mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 30) no Hoare annotation was computed. [2018-11-18 13:02:58,845 INFO L425 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-11-18 13:02:58,845 INFO L425 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2018-11-18 13:02:58,845 INFO L425 ceAbstractionStarter]: For program point L28-1(line 28) no Hoare annotation was computed. [2018-11-18 13:02:58,845 INFO L425 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-11-18 13:02:58,845 INFO L425 ceAbstractionStarter]: For program point L24-1(line 24) no Hoare annotation was computed. [2018-11-18 13:02:58,845 INFO L425 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-11-18 13:02:58,845 INFO L425 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-11-18 13:02:58,845 INFO L425 ceAbstractionStarter]: For program point L29(lines 29 31) no Hoare annotation was computed. [2018-11-18 13:02:58,846 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-18 13:02:58,846 INFO L425 ceAbstractionStarter]: For program point L25(lines 25 31) no Hoare annotation was computed. [2018-11-18 13:02:58,846 INFO L425 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-11-18 13:02:58,846 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 13 35) no Hoare annotation was computed. [2018-11-18 13:02:58,846 INFO L425 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2018-11-18 13:02:58,846 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 13 35) the Hoare annotation is: true [2018-11-18 13:02:58,846 INFO L425 ceAbstractionStarter]: For program point L30-1(line 30) no Hoare annotation was computed. [2018-11-18 13:02:58,846 INFO L425 ceAbstractionStarter]: For program point L26(line 26) no Hoare annotation was computed. [2018-11-18 13:02:58,846 INFO L425 ceAbstractionStarter]: For program point L26-1(line 26) no Hoare annotation was computed. [2018-11-18 13:02:58,846 INFO L425 ceAbstractionStarter]: For program point L22(lines 22 32) no Hoare annotation was computed. [2018-11-18 13:02:58,846 INFO L425 ceAbstractionStarter]: For program point mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2018-11-18 13:02:58,848 INFO L421 ceAbstractionStarter]: At program point L22-1(lines 19 33) the Hoare annotation is: (let ((.cse65 (<= 0 (+ main_~x~0 2147483648))) (.cse64 (<= 0 main_~i~0)) (.cse23 (<= main_~x~0 0)) (.cse3 (<= main_~N~0 10)) (.cse27 (<= 0 (+ main_~y~0 2147483648)))) (let ((.cse21 (<= 0 (+ main_~x~0 2))) (.cse45 (<= main_~x~0 1)) (.cse18 (<= main_~y~0 3)) (.cse19 (<= 0 main_~y~0)) (.cse26 (<= main_~x~0 2)) (.cse43 (<= 0 (+ main_~x~0 4))) (.cse5 (<= main_~y~0 0)) (.cse55 (<= 0 (+ main_~x~0 3))) (.cse62 (and .cse65 .cse64 .cse23 .cse3 .cse27)) (.cse20 (<= main_~y~0 4)) (.cse42 (and .cse65 .cse64 .cse3 .cse27)) (.cse6 (<= main_~x~0 3)) (.cse4 (<= 0 main_~x~0))) (let ((.cse40 (and .cse6 .cse64 .cse3 .cse4 .cse27)) (.cse34 (and .cse20 .cse42)) (.cse39 (<= main_~x~0 9)) (.cse41 (<= 0 (+ main_~y~0 6))) (.cse61 (and .cse55 .cse62)) (.cse60 (and .cse43 .cse42 .cse23 .cse5)) (.cse33 (<= 0 (+ main_~x~0 9))) (.cse53 (<= 1 main_~i~0)) (.cse58 (and .cse64 .cse19 .cse26 .cse3)) (.cse63 (and .cse65 .cse64 .cse19 .cse3)) (.cse8 (<= 0 (+ main_~y~0 4))) (.cse54 (<= 0 (+ main_~x~0 8))) (.cse44 (and .cse19 .cse18 .cse62)) (.cse25 (and .cse6 .cse64 .cse3 .cse27)) (.cse15 (and .cse6 .cse64 .cse19 .cse3)) (.cse47 (<= main_~y~0 5)) (.cse50 (and .cse55 .cse42 .cse23)) (.cse49 (and .cse64 .cse45 .cse19 .cse3 .cse4)) (.cse37 (<= main_~y~0 7)) (.cse9 (<= main_~x~0 6)) (.cse11 (<= 0 (+ main_~y~0 5))) (.cse57 (and .cse21 .cse64 .cse3 .cse27)) (.cse16 (<= 7 main_~i~0)) (.cse13 (<= main_~x~0 5)) (.cse2 (<= main_~x~0 4)) (.cse0 (<= 0 (+ main_~y~0 1))) (.cse56 (<= 0 (+ main_~x~0 5))) (.cse22 (<= 6 main_~i~0)) (.cse52 (<= 0 (+ main_~y~0 7))) (.cse59 (<= main_~x~0 8)) (.cse29 (<= 8 main_~i~0)) (.cse48 (<= 3 main_~i~0)) (.cse28 (<= 0 (+ main_~x~0 7))) (.cse24 (<= 0 (+ main_~x~0 6))) (.cse17 (<= 0 (+ main_~y~0 2))) (.cse46 (<= 2 main_~i~0)) (.cse12 (<= 9 main_~i~0)) (.cse35 (<= 0 (+ main_~x~0 1))) (.cse1 (<= 5 main_~i~0)) (.cse51 (<= main_~y~0 2)) (.cse31 (<= main_~x~0 7)) (.cse30 (<= 0 (+ main_~y~0 3))) (.cse14 (<= main_~y~0 6)) (.cse38 (and .cse21 .cse64 .cse19 .cse3)) (.cse36 (<= main_~y~0 8)) (.cse10 (<= 10 main_~i~0)) (.cse7 (<= 4 main_~i~0)) (.cse32 (<= main_~y~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse6 .cse7 .cse3 .cse4 .cse5) (and .cse8 .cse9 .cse3 .cse4 .cse10 .cse5) (and .cse11 .cse12 .cse2 .cse3 .cse4 .cse5) (and .cse11 .cse3 .cse4 .cse10 .cse5 .cse13) (and .cse12 .cse14 .cse15 .cse4) (and .cse16 .cse17 .cse3 .cse4 .cse5 .cse13) (and .cse16 .cse18 .cse19 .cse2 .cse3 .cse4) (and (and .cse20 .cse9 .cse19 .cse3) .cse4 .cse10) (and .cse19 (and .cse20 .cse21 .cse3) .cse22 .cse23) (and .cse0 .cse16 .cse24 .cse23 .cse3 .cse5) (and .cse8 .cse25 .cse16 .cse4 .cse5) (and .cse26 .cse3 .cse27 .cse4 .cse10 .cse5) (and .cse16 .cse19 .cse23 .cse28 .cse3 .cse5) (and .cse29 .cse30 .cse3 .cse4 .cse5 .cse13) (and .cse29 .cse31 .cse19 .cse32 .cse4 .cse3) (and .cse0 .cse23 .cse10 .cse3 .cse33 .cse5) (and .cse34 .cse19 .cse26 .cse22 .cse4) (and .cse16 (and .cse20 .cse15) .cse4) (and .cse12 .cse19 .cse35 .cse23 .cse3 .cse36) (and .cse12 .cse37 .cse23 .cse38) (and .cse6 .cse1 .cse17 .cse3 .cse4 .cse5) (and .cse39 .cse0 .cse3 .cse4 .cse10 .cse5) (and .cse12 .cse40 .cse41 .cse5) (and .cse24 .cse42 .cse29 .cse17 .cse23 .cse5) (and .cse16 .cse43 .cse44) (and .cse8 .cse45 .cse1 .cse3 .cse4 .cse5) (and .cse0 .cse29 .cse28 .cse23 .cse3 .cse5) (and .cse12 .cse24 .cse44) (and .cse16 .cse24 .cse19 .cse23 .cse32 .cse3) (and (<= 0 (+ main_~y~0 8)) .cse29 .cse23 .cse4 .cse3 .cse5) (and .cse25 .cse11 .cse29 .cse4 .cse5) (and .cse22 .cse41 .cse23 .cse4 .cse3 .cse5) (and .cse11 .cse35 .cse22 .cse23 .cse3 .cse5) (and .cse21 .cse46 .cse19 .cse23 .cse3 .cse5) (and .cse16 .cse19 .cse37 .cse23 .cse4 .cse3) (and .cse19 .cse29 .cse23 .cse32 .cse28 .cse3) (and .cse19 .cse47 .cse42 .cse4 .cse10 .cse13) (and .cse1 .cse19 .cse18 .cse26 .cse42 .cse4) (and .cse42 .cse30 .cse23 .cse28 .cse10 .cse5) (and .cse21 .cse0 .cse48 .cse23 .cse3 .cse5) (and .cse16 .cse49 .cse14) (and .cse50 .cse12 .cse41 .cse5) (and .cse0 .cse31 .cse29 .cse3 .cse4 .cse5) (and .cse1 .cse26 .cse30 .cse3 .cse4 .cse5) (and .cse19 .cse37 .cse29 .cse35 .cse23 .cse3) (and .cse45 .cse19 .cse51 .cse48 .cse3 .cse4) (and .cse52 .cse29 .cse35 .cse23 .cse3 .cse5) (and .cse16 .cse43 .cse42 .cse30 .cse23 .cse5) (and .cse50 .cse22 .cse30 .cse5) (and .cse49 .cse10) (and .cse12 .cse9 .cse18 .cse19 .cse3 .cse4) (and .cse19 (or (and .cse53 .cse35 .cse23 .cse3 .cse5) (and .cse53 .cse45 .cse3 .cse4 .cse5))) (and .cse12 .cse24 .cse42 .cse30 .cse23 .cse5) (and .cse52 .cse45 .cse29 .cse3 .cse4 .cse5) (and .cse50 .cse11 .cse29 .cse5) (and .cse54 .cse19 .cse51 .cse23 .cse3 .cse10) (and .cse55 .cse0 .cse7 .cse23 .cse3 .cse5) (and .cse43 .cse19 .cse51 .cse22 .cse23 .cse3) (and .cse8 .cse29 .cse2 .cse3 .cse4 .cse5) (and .cse7 .cse26 .cse17 .cse3 .cse4 .cse5) (and .cse24 .cse29 .cse19 .cse51 .cse23 .cse3) (and .cse16 .cse45 .cse41 .cse3 .cse4 .cse5) (and .cse9 .cse19 .cse22 .cse3 .cse4 .cse5) (and .cse56 .cse29 .cse44) (and .cse16 .cse19 .cse31 .cse3 .cse4 .cse5) (and .cse52 .cse40 .cse10 .cse5) (and .cse11 .cse1 .cse23 .cse4 .cse3 .cse5) (and .cse52 .cse12 .cse57 .cse23 .cse5) (and .cse39 .cse12 .cse19 .cse3 .cse4 .cse5) (and .cse16 .cse14 .cse19 .cse35 .cse23 .cse3) (and .cse2 .cse41 .cse3 .cse4 .cse10 .cse5) (and .cse16 .cse56 .cse42 .cse17 .cse23 .cse5) (and .cse49 .cse7 .cse18) (and .cse54 .cse0 .cse12 .cse23 .cse3 .cse5) (and .cse16 .cse52 .cse23 .cse4 .cse3 .cse5) (and .cse58 .cse12 .cse37 .cse4) (and .cse14 .cse19 .cse22 .cse23 .cse4 .cse3) (and .cse16 .cse35 .cse41 .cse23 .cse3 .cse5) (and .cse19 .cse47 .cse35 .cse22 .cse23 .cse3) (and .cse54 .cse12 .cse19 .cse23 .cse32 .cse3) (and .cse29 .cse57 .cse41 .cse23 .cse5) (and .cse20 .cse7 .cse19 .cse23 .cse4 .cse3) (and .cse7 .cse38 .cse51 .cse23) (and .cse0 .cse12 .cse59 .cse3 .cse4 .cse5) (and .cse60 .cse41 .cse10) (and .cse8 .cse7 .cse23 .cse4 .cse3 .cse5) (and .cse37 (and .cse61 .cse19) .cse10) (and .cse55 .cse1 .cse19 .cse51 .cse23 .cse3) (and .cse35 .cse23 .cse3 .cse27 .cse10) (and .cse49 .cse37 .cse29) (and .cse12 .cse19 .cse34 .cse4 .cse13) (and .cse19 .cse26 .cse48 .cse32 .cse3 .cse4) (and .cse55 .cse19 .cse18 .cse62 .cse22) (and .cse59 .cse17 .cse3 .cse4 .cse10 .cse5) (and .cse12 .cse19 .cse31 .cse51 .cse42 .cse4) (and .cse57 .cse7 .cse17 .cse23 .cse5) (and .cse39 .cse19 .cse32 .cse3 .cse10 .cse4) (and .cse29 .cse26 .cse41 .cse3 .cse4 .cse5) (and .cse12 .cse14 .cse19 (and .cse55 .cse23 .cse3)) (and .cse12 .cse19 .cse23 .cse3 .cse33 .cse5) (and .cse11 .cse12 .cse60) (and .cse12 .cse59 .cse19 .cse32 .cse4 .cse3) (and .cse8 .cse1 .cse35 .cse23 .cse3 .cse5) (and .cse56 .cse19 .cse22 .cse23 .cse32 .cse3) (and .cse1 .cse19 .cse2 .cse32 .cse3 .cse4) (and .cse1 .cse19 .cse47 .cse23 .cse4 .cse3) (and .cse53 .cse19 .cse23 .cse32 .cse4 .cse3) (and .cse16 .cse56 .cse19 .cse51 .cse23 .cse3) (and .cse19 .cse22 .cse32 .cse3 .cse4 .cse13) (and .cse11 (and .cse56 .cse23 .cse3) .cse10 .cse5) (and .cse1 .cse18 .cse23 .cse38) (and .cse61 .cse29 .cse19 .cse47) (and .cse8 .cse56 .cse12 .cse42 .cse23 .cse5) (and .cse12 .cse9 .cse30 .cse3 .cse4 .cse5) (and (and .cse20 .cse45 .cse19 .cse3 .cse4) .cse1) (and (and .cse57 .cse23 .cse5) .cse10) (and .cse46 .cse0 .cse35 .cse23 .cse3 .cse5) (and .cse12 .cse19 .cse51 .cse23 .cse28 .cse3) (and .cse43 .cse42 .cse22 .cse17 .cse23 .cse5) (and .cse16 .cse9 .cse19 .cse32 .cse4 .cse3) (and .cse20 .cse63 .cse56 .cse12 .cse23) (and .cse0 .cse22 .cse3 .cse4 .cse5 .cse13) (and .cse8 .cse57 .cse22 .cse23 .cse5) (and .cse20 .cse1 .cse19 .cse35 .cse23 .cse3) (and .cse16 .cse19 .cse47 .cse26 .cse42 .cse4) (and .cse11 .cse45 .cse22 .cse3 .cse4 .cse5) (and .cse19 .cse59 .cse51 .cse42 .cse4 .cse10) (and .cse8 .cse29 .cse60) (and .cse64 .cse19 .cse23 .cse4 .cse3 .cse5) (and .cse6 .cse7 .cse19 .cse32 .cse3 .cse4) (and .cse17 (or (and .cse45 .cse48 .cse3 .cse4 .cse5) (and .cse35 .cse48 .cse23 .cse3 .cse5))) (and .cse8 .cse24 .cse42 .cse23 .cse10 .cse5) (and .cse8 .cse12 .cse3 .cse4 .cse5 .cse13) (and .cse56 .cse1 .cse19 .cse23 .cse3 .cse5) (and .cse63 .cse56 .cse47 .cse23 .cse10) (and .cse12 (and .cse43 .cse19 .cse47 .cse23 .cse3)) (and .cse46 .cse19 .cse26 .cse3 .cse4 .cse5) (and .cse19 .cse23 .cse32 .cse3 .cse10 .cse33) (and .cse45 .cse7 .cse30 .cse3 .cse4 .cse5) (and .cse53 .cse0 .cse23 .cse4 .cse3 .cse5) (and .cse1 .cse19 .cse3 .cse4 .cse5 .cse13) (and .cse9 .cse19 .cse29 .cse51 .cse42 .cse4) (and .cse16 .cse2 .cse30 .cse3 .cse4 .cse5) (and .cse29 .cse18 .cse19 .cse3 .cse4 .cse13) (and (and .cse49 .cse47) .cse22) (and .cse16 .cse11 .cse57 .cse23 .cse5) (and .cse7 .cse19 .cse51 .cse26 .cse3 .cse4) (and .cse54 .cse19 .cse29 .cse23 .cse3 .cse5) (and .cse58 .cse4 .cse36 .cse10) (and .cse29 (and .cse20 .cse63 .cse43) .cse23) (and .cse19 .cse2 .cse51 .cse22 .cse42 .cse4) (and .cse31 .cse18 .cse19 .cse3 .cse4 .cse10) (and .cse55 .cse1 .cse42 .cse17 .cse23 .cse5) (and .cse12 .cse19 .cse47 .cse2 .cse3 .cse4) (and .cse55 .cse19 .cse48 .cse23 .cse3 .cse5) (and (<= main_~x~0 10) .cse19 .cse3 .cse4 .cse10 .cse5) (and .cse12 (and .cse42 .cse31 .cse17 .cse4) .cse5) (and .cse8 .cse26 .cse22 .cse3 .cse4 .cse5) (and .cse56 .cse42 .cse29 .cse30 .cse23 .cse5) (and .cse38 .cse14 .cse29 .cse23) (and .cse24 .cse19 .cse22 .cse23 .cse3 .cse5) (and .cse38 .cse16 .cse47 .cse23) (and .cse8 .cse50 .cse16 .cse5) (and .cse0 .cse43 .cse1 .cse23 .cse3 .cse5) (and (and .cse6 .cse19 .cse18 .cse3) .cse22 .cse4) (and .cse20 .cse29 .cse19 .cse2 .cse3 .cse4) (and .cse0 .cse16 .cse9 .cse3 .cse4 .cse5) (and .cse19 .cse29 .cse23 .cse4 .cse36 .cse3) (and .cse54 .cse42 .cse17 .cse23 .cse10 .cse5) (and .cse65 .cse19 .cse23 .cse3 .cse10 .cse5) (and .cse19 .cse18 .cse48 .cse23 .cse4 .cse3) (and .cse16 (and .cse20 .cse55 .cse3) .cse19 .cse23) (and .cse19 .cse51 .cse35 .cse48 .cse23 .cse3) (and .cse44 .cse28 .cse10) (and .cse25 .cse22 .cse30 .cse4 .cse5) (and .cse15 .cse29 .cse47 .cse4) (and .cse14 .cse29 .cse19 .cse26 .cse42 .cse4) (and .cse7 .cse35 .cse30 .cse23 .cse3 .cse5) (and .cse50 .cse52 .cse10 .cse5) (and .cse49 .cse12 .cse36) (and .cse0 .cse26 .cse48 .cse3 .cse4 .cse5) (and .cse46 .cse19 .cse51 .cse23 .cse4 .cse3) (and .cse37 (and .cse6 .cse19 .cse3) .cse4 .cse10) (and .cse6 .cse19 .cse48 .cse3 .cse4 .cse5) (and .cse14 .cse19 .cse2 .cse3 .cse4 .cse10) (and .cse9 .cse29 .cse17 .cse3 .cse4 .cse5) (and .cse48 .cse30 .cse23 .cse4 .cse3 .cse5) (and .cse16 .cse11 .cse26 .cse3 .cse4 .cse5) (and .cse1 .cse57 .cse30 .cse23 .cse5) (and .cse7 .cse19 .cse2 .cse3 .cse4 .cse5) (and .cse46 .cse0 .cse45 .cse3 .cse4 .cse5) (and .cse43 .cse1 .cse19 .cse23 .cse32 .cse3) (and .cse7 .cse18 .cse19 .cse35 .cse23 .cse3) (and .cse12 (<= main_~y~0 9) .cse19 .cse23 .cse4 .cse3) (and .cse16 .cse19 .cse51 .cse42 .cse4 .cse13) (and .cse46 .cse19 .cse35 .cse23 .cse32 .cse3) (and .cse2 .cse22 .cse17 .cse3 .cse4 .cse5) (and .cse0 .cse56 .cse22 .cse23 .cse3 .cse5) (and .cse52 .cse12 .cse26 .cse3 .cse4 .cse5) (and .cse59 .cse29 .cse19 .cse3 .cse4 .cse5) (and .cse21 .cse19 .cse48 .cse23 .cse32 .cse3) (and .cse12 .cse42 .cse17 .cse23 .cse28 .cse5) (and (and .cse20 .cse3) .cse24 .cse19 .cse23 .cse10) (and .cse46 .cse17 .cse23 .cse4 .cse3 .cse5) (and .cse46 .cse45 .cse19 .cse32 .cse3 .cse4) (and (<= 0 (+ main_~y~0 9)) (or (and .cse45 .cse12 .cse3 .cse4 .cse5) (and .cse12 .cse35 .cse23 .cse3 .cse5))) (and .cse43 .cse7 .cse19 .cse23 .cse3 .cse5) (and .cse6 .cse1 .cse19 .cse51 .cse42 .cse4) (and .cse31 .cse30 .cse3 .cse4 .cse10 .cse5) (and (and (and .cse43 .cse19 .cse3) .cse14 .cse23) .cse10) (and (and .cse23 .cse38) .cse36 .cse10) (and .cse55 .cse7 .cse19 .cse23 .cse32 .cse3))))) [2018-11-18 13:02:58,849 INFO L425 ceAbstractionStarter]: For program point mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2018-11-18 13:02:58,849 INFO L425 ceAbstractionStarter]: For program point mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 30) no Hoare annotation was computed. [2018-11-18 13:02:58,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:02:58 BoogieIcfgContainer [2018-11-18 13:02:58,890 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 13:02:58,890 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:02:58,890 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:02:58,891 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:02:58,891 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:00:58" (3/4) ... [2018-11-18 13:02:58,895 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 13:02:58,903 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 13:02:58,903 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 13:02:58,907 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-18 13:02:58,907 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-18 13:02:58,907 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 13:02:58,907 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 13:02:58,956 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c413d0c0-c858-4065-abaa-4bc6267b4128/bin-2019/utaipan/witness.graphml [2018-11-18 13:02:58,956 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:02:58,957 INFO L168 Benchmark]: Toolchain (without parser) took 121131.41 ms. Allocated memory was 1.0 GB in the beginning and 3.8 GB in the end (delta: 2.8 GB). Free memory was 959.1 MB in the beginning and 3.0 GB in the end (delta: -2.1 GB). Peak memory consumption was 704.8 MB. Max. memory is 11.5 GB. [2018-11-18 13:02:58,957 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:02:58,957 INFO L168 Benchmark]: CACSL2BoogieTranslator took 183.36 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:02:58,958 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.73 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:02:58,958 INFO L168 Benchmark]: Boogie Preprocessor took 16.30 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:02:58,958 INFO L168 Benchmark]: RCFGBuilder took 187.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 177.7 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -213.9 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-18 13:02:58,958 INFO L168 Benchmark]: TraceAbstraction took 120658.69 ms. Allocated memory was 1.2 GB in the beginning and 3.8 GB in the end (delta: 2.6 GB). Free memory was 1.2 GB in the beginning and 3.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 4.4 GB. Max. memory is 11.5 GB. [2018-11-18 13:02:58,959 INFO L168 Benchmark]: Witness Printer took 65.68 ms. Allocated memory is still 3.8 GB. Free memory is still 3.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:02:58,960 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 183.36 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 16.73 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.30 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 187.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 177.7 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -213.9 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 120658.69 ms. Allocated memory was 1.2 GB in the beginning and 3.8 GB in the end (delta: 2.6 GB). Free memory was 1.2 GB in the beginning and 3.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 4.4 GB. Max. memory is 11.5 GB. * Witness Printer took 65.68 ms. Allocated memory is still 3.8 GB. Free memory is still 3.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 30]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 30]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0 <= y + 1 && 5 <= i) && x <= 4) && N <= 10) && 0 <= x) && y <= 0) || (((((0 <= y + 1 && x <= 3) && 4 <= i) && N <= 10) && 0 <= x) && y <= 0)) || (((((0 <= y + 4 && x <= 6) && N <= 10) && 0 <= x) && 10 <= i) && y <= 0)) || (((((0 <= y + 5 && 9 <= i) && x <= 4) && N <= 10) && 0 <= x) && y <= 0)) || (((((0 <= y + 5 && N <= 10) && 0 <= x) && 10 <= i) && y <= 0) && x <= 5)) || (((9 <= i && y <= 6) && ((x <= 3 && 0 <= i) && 0 <= y) && N <= 10) && 0 <= x)) || (((((7 <= i && 0 <= y + 2) && N <= 10) && 0 <= x) && y <= 0) && x <= 5)) || (((((7 <= i && y <= 3) && 0 <= y) && x <= 4) && N <= 10) && 0 <= x)) || (((((y <= 4 && x <= 6) && 0 <= y) && N <= 10) && 0 <= x) && 10 <= i)) || (((0 <= y && (y <= 4 && 0 <= x + 2) && N <= 10) && 6 <= i) && x <= 0)) || (((((0 <= y + 1 && 7 <= i) && 0 <= x + 6) && x <= 0) && N <= 10) && y <= 0)) || ((((0 <= y + 4 && ((x <= 3 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 7 <= i) && 0 <= x) && y <= 0)) || (((((x <= 2 && N <= 10) && 0 <= y + 2147483648) && 0 <= x) && 10 <= i) && y <= 0)) || (((((7 <= i && 0 <= y) && x <= 0) && 0 <= x + 7) && N <= 10) && y <= 0)) || (((((8 <= i && 0 <= y + 3) && N <= 10) && 0 <= x) && y <= 0) && x <= 5)) || (((((8 <= i && x <= 7) && 0 <= y) && y <= 1) && 0 <= x) && N <= 10)) || (((((0 <= y + 1 && x <= 0) && 10 <= i) && N <= 10) && 0 <= x + 9) && y <= 0)) || (((((y <= 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y) && x <= 2) && 6 <= i) && 0 <= x)) || ((7 <= i && y <= 4 && ((x <= 3 && 0 <= i) && 0 <= y) && N <= 10) && 0 <= x)) || (((((9 <= i && 0 <= y) && 0 <= x + 1) && x <= 0) && N <= 10) && y <= 8)) || (((9 <= i && y <= 7) && x <= 0) && ((0 <= x + 2 && 0 <= i) && 0 <= y) && N <= 10)) || (((((x <= 3 && 5 <= i) && 0 <= y + 2) && N <= 10) && 0 <= x) && y <= 0)) || (((((x <= 9 && 0 <= y + 1) && N <= 10) && 0 <= x) && 10 <= i) && y <= 0)) || (((9 <= i && (((x <= 3 && 0 <= i) && N <= 10) && 0 <= x) && 0 <= y + 2147483648) && 0 <= y + 6) && y <= 0)) || (((((0 <= x + 6 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 8 <= i) && 0 <= y + 2) && x <= 0) && y <= 0)) || ((7 <= i && 0 <= x + 4) && (0 <= y && y <= 3) && (((0 <= x + 2147483648 && 0 <= i) && x <= 0) && N <= 10) && 0 <= y + 2147483648)) || (((((0 <= y + 4 && x <= 1) && 5 <= i) && N <= 10) && 0 <= x) && y <= 0)) || (((((0 <= y + 1 && 8 <= i) && 0 <= x + 7) && x <= 0) && N <= 10) && y <= 0)) || ((9 <= i && 0 <= x + 6) && (0 <= y && y <= 3) && (((0 <= x + 2147483648 && 0 <= i) && x <= 0) && N <= 10) && 0 <= y + 2147483648)) || (((((7 <= i && 0 <= x + 6) && 0 <= y) && x <= 0) && y <= 1) && N <= 10)) || (((((0 <= y + 8 && 8 <= i) && x <= 0) && 0 <= x) && N <= 10) && y <= 0)) || (((((((x <= 3 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 5) && 8 <= i) && 0 <= x) && y <= 0)) || (((((6 <= i && 0 <= y + 6) && x <= 0) && 0 <= x) && N <= 10) && y <= 0)) || (((((0 <= y + 5 && 0 <= x + 1) && 6 <= i) && x <= 0) && N <= 10) && y <= 0)) || (((((0 <= x + 2 && 2 <= i) && 0 <= y) && x <= 0) && N <= 10) && y <= 0)) || (((((7 <= i && 0 <= y) && y <= 7) && x <= 0) && 0 <= x) && N <= 10)) || (((((0 <= y && 8 <= i) && x <= 0) && y <= 1) && 0 <= x + 7) && N <= 10)) || (((((0 <= y && y <= 5) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= x) && 10 <= i) && x <= 5)) || (((((5 <= i && 0 <= y) && y <= 3) && x <= 2) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= x)) || ((((((((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 3) && x <= 0) && 0 <= x + 7) && 10 <= i) && y <= 0)) || (((((0 <= x + 2 && 0 <= y + 1) && 3 <= i) && x <= 0) && N <= 10) && y <= 0)) || ((7 <= i && (((0 <= i && x <= 1) && 0 <= y) && N <= 10) && 0 <= x) && y <= 6)) || (((((0 <= x + 3 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && 9 <= i) && 0 <= y + 6) && y <= 0)) || (((((0 <= y + 1 && x <= 7) && 8 <= i) && N <= 10) && 0 <= x) && y <= 0)) || (((((5 <= i && x <= 2) && 0 <= y + 3) && N <= 10) && 0 <= x) && y <= 0)) || (((((0 <= y && y <= 7) && 8 <= i) && 0 <= x + 1) && x <= 0) && N <= 10)) || (((((x <= 1 && 0 <= y) && y <= 2) && 3 <= i) && N <= 10) && 0 <= x)) || (((((0 <= y + 7 && 8 <= i) && 0 <= x + 1) && x <= 0) && N <= 10) && y <= 0)) || (((((7 <= i && 0 <= x + 4) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 3) && x <= 0) && y <= 0)) || (((((0 <= x + 3 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && 6 <= i) && 0 <= y + 3) && y <= 0)) || (((((0 <= i && x <= 1) && 0 <= y) && N <= 10) && 0 <= x) && 10 <= i)) || (((((9 <= i && x <= 6) && y <= 3) && 0 <= y) && N <= 10) && 0 <= x)) || (0 <= y && (((((1 <= i && 0 <= x + 1) && x <= 0) && N <= 10) && y <= 0) || ((((1 <= i && x <= 1) && N <= 10) && 0 <= x) && y <= 0)))) || (((((9 <= i && 0 <= x + 6) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 3) && x <= 0) && y <= 0)) || (((((0 <= y + 7 && x <= 1) && 8 <= i) && N <= 10) && 0 <= x) && y <= 0)) || (((((0 <= x + 3 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && 0 <= y + 5) && 8 <= i) && y <= 0)) || (((((0 <= x + 8 && 0 <= y) && y <= 2) && x <= 0) && N <= 10) && 10 <= i)) || (((((0 <= x + 3 && 0 <= y + 1) && 4 <= i) && x <= 0) && N <= 10) && y <= 0)) || (((((0 <= x + 4 && 0 <= y) && y <= 2) && 6 <= i) && x <= 0) && N <= 10)) || (((((0 <= y + 4 && 8 <= i) && x <= 4) && N <= 10) && 0 <= x) && y <= 0)) || (((((4 <= i && x <= 2) && 0 <= y + 2) && N <= 10) && 0 <= x) && y <= 0)) || (((((0 <= x + 6 && 8 <= i) && 0 <= y) && y <= 2) && x <= 0) && N <= 10)) || (((((7 <= i && x <= 1) && 0 <= y + 6) && N <= 10) && 0 <= x) && y <= 0)) || (((((x <= 6 && 0 <= y) && 6 <= i) && N <= 10) && 0 <= x) && y <= 0)) || ((0 <= x + 5 && 8 <= i) && (0 <= y && y <= 3) && (((0 <= x + 2147483648 && 0 <= i) && x <= 0) && N <= 10) && 0 <= y + 2147483648)) || (((((7 <= i && 0 <= y) && x <= 7) && N <= 10) && 0 <= x) && y <= 0)) || (((0 <= y + 7 && (((x <= 3 && 0 <= i) && N <= 10) && 0 <= x) && 0 <= y + 2147483648) && 10 <= i) && y <= 0)) || (((((0 <= y + 5 && 5 <= i) && x <= 0) && 0 <= x) && N <= 10) && y <= 0)) || ((((0 <= y + 7 && 9 <= i) && ((0 <= x + 2 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && y <= 0)) || (((((x <= 9 && 9 <= i) && 0 <= y) && N <= 10) && 0 <= x) && y <= 0)) || (((((7 <= i && y <= 6) && 0 <= y) && 0 <= x + 1) && x <= 0) && N <= 10)) || (((((x <= 4 && 0 <= y + 6) && N <= 10) && 0 <= x) && 10 <= i) && y <= 0)) || (((((7 <= i && 0 <= x + 5) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 2) && x <= 0) && y <= 0)) || ((((((0 <= i && x <= 1) && 0 <= y) && N <= 10) && 0 <= x) && 4 <= i) && y <= 3)) || (((((0 <= x + 8 && 0 <= y + 1) && 9 <= i) && x <= 0) && N <= 10) && y <= 0)) || (((((7 <= i && 0 <= y + 7) && x <= 0) && 0 <= x) && N <= 10) && y <= 0)) || ((((((0 <= i && 0 <= y) && x <= 2) && N <= 10) && 9 <= i) && y <= 7) && 0 <= x)) || (((((y <= 6 && 0 <= y) && 6 <= i) && x <= 0) && 0 <= x) && N <= 10)) || (((((7 <= i && 0 <= x + 1) && 0 <= y + 6) && x <= 0) && N <= 10) && y <= 0)) || (((((0 <= y && y <= 5) && 0 <= x + 1) && 6 <= i) && x <= 0) && N <= 10)) || (((((0 <= x + 8 && 9 <= i) && 0 <= y) && x <= 0) && y <= 1) && N <= 10)) || ((((8 <= i && ((0 <= x + 2 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 6) && x <= 0) && y <= 0)) || (((((y <= 4 && 4 <= i) && 0 <= y) && x <= 0) && 0 <= x) && N <= 10)) || (((4 <= i && ((0 <= x + 2 && 0 <= i) && 0 <= y) && N <= 10) && y <= 2) && x <= 0)) || (((((0 <= y + 1 && 9 <= i) && x <= 8) && N <= 10) && 0 <= x) && y <= 0)) || (((((0 <= x + 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && y <= 0) && 0 <= y + 6) && 10 <= i)) || (((((0 <= y + 4 && 4 <= i) && x <= 0) && 0 <= x) && N <= 10) && y <= 0)) || ((y <= 7 && (0 <= x + 3 && (((0 <= x + 2147483648 && 0 <= i) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && 0 <= y) && 10 <= i)) || (((((0 <= x + 3 && 5 <= i) && 0 <= y) && y <= 2) && x <= 0) && N <= 10)) || ((((0 <= x + 1 && x <= 0) && N <= 10) && 0 <= y + 2147483648) && 10 <= i)) || ((((((0 <= i && x <= 1) && 0 <= y) && N <= 10) && 0 <= x) && y <= 7) && 8 <= i)) || ((((9 <= i && 0 <= y) && y <= 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= x) && x <= 5)) || (((((0 <= y && x <= 2) && 3 <= i) && y <= 1) && N <= 10) && 0 <= x)) || ((((0 <= x + 3 && 0 <= y) && y <= 3) && (((0 <= x + 2147483648 && 0 <= i) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && 6 <= i)) || (((((x <= 8 && 0 <= y + 2) && N <= 10) && 0 <= x) && 10 <= i) && y <= 0)) || (((((9 <= i && 0 <= y) && x <= 7) && y <= 2) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= x)) || (((((((0 <= x + 2 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 4 <= i) && 0 <= y + 2) && x <= 0) && y <= 0)) || (((((x <= 9 && 0 <= y) && y <= 1) && N <= 10) && 10 <= i) && 0 <= x)) || (((((8 <= i && x <= 2) && 0 <= y + 6) && N <= 10) && 0 <= x) && y <= 0)) || (((9 <= i && y <= 6) && 0 <= y) && (0 <= x + 3 && x <= 0) && N <= 10)) || (((((9 <= i && 0 <= y) && x <= 0) && N <= 10) && 0 <= x + 9) && y <= 0)) || ((0 <= y + 5 && 9 <= i) && ((0 <= x + 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && y <= 0)) || (((((9 <= i && x <= 8) && 0 <= y) && y <= 1) && 0 <= x) && N <= 10)) || (((((0 <= y + 4 && 5 <= i) && 0 <= x + 1) && x <= 0) && N <= 10) && y <= 0)) || (((((0 <= x + 5 && 0 <= y) && 6 <= i) && x <= 0) && y <= 1) && N <= 10)) || (((((5 <= i && 0 <= y) && x <= 4) && y <= 1) && N <= 10) && 0 <= x)) || (((((5 <= i && 0 <= y) && y <= 5) && x <= 0) && 0 <= x) && N <= 10)) || (((((1 <= i && 0 <= y) && x <= 0) && y <= 1) && 0 <= x) && N <= 10)) || (((((7 <= i && 0 <= x + 5) && 0 <= y) && y <= 2) && x <= 0) && N <= 10)) || (((((0 <= y && 6 <= i) && y <= 1) && N <= 10) && 0 <= x) && x <= 5)) || (((0 <= y + 5 && (0 <= x + 5 && x <= 0) && N <= 10) && 10 <= i) && y <= 0)) || (((5 <= i && y <= 3) && x <= 0) && ((0 <= x + 2 && 0 <= i) && 0 <= y) && N <= 10)) || ((((0 <= x + 3 && (((0 <= x + 2147483648 && 0 <= i) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && 8 <= i) && 0 <= y) && y <= 5)) || (((((0 <= y + 4 && 0 <= x + 5) && 9 <= i) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && y <= 0)) || (((((9 <= i && x <= 6) && 0 <= y + 3) && N <= 10) && 0 <= x) && y <= 0)) || (((((y <= 4 && x <= 1) && 0 <= y) && N <= 10) && 0 <= x) && 5 <= i)) || ((((((0 <= x + 2 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && y <= 0) && 10 <= i)) || (((((2 <= i && 0 <= y + 1) && 0 <= x + 1) && x <= 0) && N <= 10) && y <= 0)) || (((((9 <= i && 0 <= y) && y <= 2) && x <= 0) && 0 <= x + 7) && N <= 10)) || (((((0 <= x + 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 6 <= i) && 0 <= y + 2) && x <= 0) && y <= 0)) || (((((7 <= i && x <= 6) && 0 <= y) && y <= 1) && 0 <= x) && N <= 10)) || ((((y <= 4 && ((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && N <= 10) && 0 <= x + 5) && 9 <= i) && x <= 0)) || (((((0 <= y + 1 && 6 <= i) && N <= 10) && 0 <= x) && y <= 0) && x <= 5)) || ((((0 <= y + 4 && ((0 <= x + 2 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 6 <= i) && x <= 0) && y <= 0)) || (((((y <= 4 && 5 <= i) && 0 <= y) && 0 <= x + 1) && x <= 0) && N <= 10)) || (((((7 <= i && 0 <= y) && y <= 5) && x <= 2) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= x)) || (((((0 <= y + 5 && x <= 1) && 6 <= i) && N <= 10) && 0 <= x) && y <= 0)) || (((((0 <= y && x <= 8) && y <= 2) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= x) && 10 <= i)) || ((0 <= y + 4 && 8 <= i) && ((0 <= x + 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && y <= 0)) || (((((0 <= i && 0 <= y) && x <= 0) && 0 <= x) && N <= 10) && y <= 0)) || (((((x <= 3 && 4 <= i) && 0 <= y) && y <= 1) && N <= 10) && 0 <= x)) || (0 <= y + 2 && (((((x <= 1 && 3 <= i) && N <= 10) && 0 <= x) && y <= 0) || ((((0 <= x + 1 && 3 <= i) && x <= 0) && N <= 10) && y <= 0)))) || (((((0 <= y + 4 && 0 <= x + 6) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && 10 <= i) && y <= 0)) || (((((0 <= y + 4 && 9 <= i) && N <= 10) && 0 <= x) && y <= 0) && x <= 5)) || (((((0 <= x + 5 && 5 <= i) && 0 <= y) && x <= 0) && N <= 10) && y <= 0)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && N <= 10) && 0 <= x + 5) && y <= 5) && x <= 0) && 10 <= i)) || (9 <= i && (((0 <= x + 4 && 0 <= y) && y <= 5) && x <= 0) && N <= 10)) || (((((2 <= i && 0 <= y) && x <= 2) && N <= 10) && 0 <= x) && y <= 0)) || (((((0 <= y && x <= 0) && y <= 1) && N <= 10) && 10 <= i) && 0 <= x + 9)) || (((((x <= 1 && 4 <= i) && 0 <= y + 3) && N <= 10) && 0 <= x) && y <= 0)) || (((((1 <= i && 0 <= y + 1) && x <= 0) && 0 <= x) && N <= 10) && y <= 0)) || (((((5 <= i && 0 <= y) && N <= 10) && 0 <= x) && y <= 0) && x <= 5)) || (((((x <= 6 && 0 <= y) && 8 <= i) && y <= 2) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= x)) || (((((7 <= i && x <= 4) && 0 <= y + 3) && N <= 10) && 0 <= x) && y <= 0)) || (((((8 <= i && y <= 3) && 0 <= y) && N <= 10) && 0 <= x) && x <= 5)) || ((((((0 <= i && x <= 1) && 0 <= y) && N <= 10) && 0 <= x) && y <= 5) && 6 <= i)) || ((((7 <= i && 0 <= y + 5) && ((0 <= x + 2 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && y <= 0)) || (((((4 <= i && 0 <= y) && y <= 2) && x <= 2) && N <= 10) && 0 <= x)) || (((((0 <= x + 8 && 0 <= y) && 8 <= i) && x <= 0) && N <= 10) && y <= 0)) || ((((((0 <= i && 0 <= y) && x <= 2) && N <= 10) && 0 <= x) && y <= 8) && 10 <= i)) || ((8 <= i && (y <= 4 && ((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && N <= 10) && 0 <= x + 4) && x <= 0)) || (((((0 <= y && x <= 4) && y <= 2) && 6 <= i) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= x)) || (((((x <= 7 && y <= 3) && 0 <= y) && N <= 10) && 0 <= x) && 10 <= i)) || (((((0 <= x + 3 && 5 <= i) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 2) && x <= 0) && y <= 0)) || (((((9 <= i && 0 <= y) && y <= 5) && x <= 4) && N <= 10) && 0 <= x)) || (((((0 <= x + 3 && 0 <= y) && 3 <= i) && x <= 0) && N <= 10) && y <= 0)) || (((((x <= 10 && 0 <= y) && N <= 10) && 0 <= x) && 10 <= i) && y <= 0)) || ((9 <= i && (((((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 7) && 0 <= y + 2) && 0 <= x) && y <= 0)) || (((((0 <= y + 4 && x <= 2) && 6 <= i) && N <= 10) && 0 <= x) && y <= 0)) || (((((0 <= x + 5 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 8 <= i) && 0 <= y + 3) && x <= 0) && y <= 0)) || ((((((0 <= x + 2 && 0 <= i) && 0 <= y) && N <= 10) && y <= 6) && 8 <= i) && x <= 0)) || (((((0 <= x + 6 && 0 <= y) && 6 <= i) && x <= 0) && N <= 10) && y <= 0)) || ((((((0 <= x + 2 && 0 <= i) && 0 <= y) && N <= 10) && 7 <= i) && y <= 5) && x <= 0)) || (((0 <= y + 4 && (0 <= x + 3 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && 7 <= i) && y <= 0)) || (((((0 <= y + 1 && 0 <= x + 4) && 5 <= i) && x <= 0) && N <= 10) && y <= 0)) || (((((x <= 3 && 0 <= y) && y <= 3) && N <= 10) && 6 <= i) && 0 <= x)) || (((((y <= 4 && 8 <= i) && 0 <= y) && x <= 4) && N <= 10) && 0 <= x)) || (((((0 <= y + 1 && 7 <= i) && x <= 6) && N <= 10) && 0 <= x) && y <= 0)) || (((((0 <= y && 8 <= i) && x <= 0) && 0 <= x) && y <= 8) && N <= 10)) || (((((0 <= x + 8 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 2) && x <= 0) && 10 <= i) && y <= 0)) || (((((0 <= x + 2147483648 && 0 <= y) && x <= 0) && N <= 10) && 10 <= i) && y <= 0)) || (((((0 <= y && y <= 3) && 3 <= i) && x <= 0) && 0 <= x) && N <= 10)) || (((7 <= i && (y <= 4 && 0 <= x + 3) && N <= 10) && 0 <= y) && x <= 0)) || (((((0 <= y && y <= 2) && 0 <= x + 1) && 3 <= i) && x <= 0) && N <= 10)) || ((((0 <= y && y <= 3) && (((0 <= x + 2147483648 && 0 <= i) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && 0 <= x + 7) && 10 <= i)) || (((((((x <= 3 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 6 <= i) && 0 <= y + 3) && 0 <= x) && y <= 0)) || ((((((x <= 3 && 0 <= i) && 0 <= y) && N <= 10) && 8 <= i) && y <= 5) && 0 <= x)) || (((((y <= 6 && 8 <= i) && 0 <= y) && x <= 2) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= x)) || (((((4 <= i && 0 <= x + 1) && 0 <= y + 3) && x <= 0) && N <= 10) && y <= 0)) || (((((0 <= x + 3 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && 0 <= y + 7) && 10 <= i) && y <= 0)) || ((((((0 <= i && x <= 1) && 0 <= y) && N <= 10) && 0 <= x) && 9 <= i) && y <= 8)) || (((((0 <= y + 1 && x <= 2) && 3 <= i) && N <= 10) && 0 <= x) && y <= 0)) || (((((2 <= i && 0 <= y) && y <= 2) && x <= 0) && 0 <= x) && N <= 10)) || (((y <= 7 && (x <= 3 && 0 <= y) && N <= 10) && 0 <= x) && 10 <= i)) || (((((x <= 3 && 0 <= y) && 3 <= i) && N <= 10) && 0 <= x) && y <= 0)) || (((((y <= 6 && 0 <= y) && x <= 4) && N <= 10) && 0 <= x) && 10 <= i)) || (((((x <= 6 && 8 <= i) && 0 <= y + 2) && N <= 10) && 0 <= x) && y <= 0)) || (((((3 <= i && 0 <= y + 3) && x <= 0) && 0 <= x) && N <= 10) && y <= 0)) || (((((7 <= i && 0 <= y + 5) && x <= 2) && N <= 10) && 0 <= x) && y <= 0)) || ((((5 <= i && ((0 <= x + 2 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 3) && x <= 0) && y <= 0)) || (((((4 <= i && 0 <= y) && x <= 4) && N <= 10) && 0 <= x) && y <= 0)) || (((((2 <= i && 0 <= y + 1) && x <= 1) && N <= 10) && 0 <= x) && y <= 0)) || (((((0 <= x + 4 && 5 <= i) && 0 <= y) && x <= 0) && y <= 1) && N <= 10)) || (((((4 <= i && y <= 3) && 0 <= y) && 0 <= x + 1) && x <= 0) && N <= 10)) || (((((9 <= i && y <= 9) && 0 <= y) && x <= 0) && 0 <= x) && N <= 10)) || (((((7 <= i && 0 <= y) && y <= 2) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= x) && x <= 5)) || (((((2 <= i && 0 <= y) && 0 <= x + 1) && x <= 0) && y <= 1) && N <= 10)) || (((((x <= 4 && 6 <= i) && 0 <= y + 2) && N <= 10) && 0 <= x) && y <= 0)) || (((((0 <= y + 1 && 0 <= x + 5) && 6 <= i) && x <= 0) && N <= 10) && y <= 0)) || (((((0 <= y + 7 && 9 <= i) && x <= 2) && N <= 10) && 0 <= x) && y <= 0)) || (((((x <= 8 && 8 <= i) && 0 <= y) && N <= 10) && 0 <= x) && y <= 0)) || (((((0 <= x + 2 && 0 <= y) && 3 <= i) && x <= 0) && y <= 1) && N <= 10)) || (((((9 <= i && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 2) && x <= 0) && 0 <= x + 7) && y <= 0)) || (((((y <= 4 && N <= 10) && 0 <= x + 6) && 0 <= y) && x <= 0) && 10 <= i)) || (((((2 <= i && 0 <= y + 2) && x <= 0) && 0 <= x) && N <= 10) && y <= 0)) || (((((2 <= i && x <= 1) && 0 <= y) && y <= 1) && N <= 10) && 0 <= x)) || (0 <= y + 9 && (((((x <= 1 && 9 <= i) && N <= 10) && 0 <= x) && y <= 0) || ((((9 <= i && 0 <= x + 1) && x <= 0) && N <= 10) && y <= 0)))) || (((((0 <= x + 4 && 4 <= i) && 0 <= y) && x <= 0) && N <= 10) && y <= 0)) || (((((x <= 3 && 5 <= i) && 0 <= y) && y <= 2) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= x)) || (((((x <= 7 && 0 <= y + 3) && N <= 10) && 0 <= x) && 10 <= i) && y <= 0)) || (((((0 <= x + 4 && 0 <= y) && N <= 10) && y <= 6) && x <= 0) && 10 <= i)) || (((x <= 0 && ((0 <= x + 2 && 0 <= i) && 0 <= y) && N <= 10) && y <= 8) && 10 <= i)) || (((((0 <= x + 3 && 4 <= i) && 0 <= y) && x <= 0) && y <= 1) && N <= 10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 37 locations, 10 error locations. SAFE Result, 120.5s OverallTime, 47 OverallIterations, 12 TraceHistogramMax, 12.6s AutomataDifference, 0.0s DeadEndRemovalTime, 86.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 1463 SDtfs, 6929 SDslu, 5745 SDs, 0 SdLazy, 1418 SolverSat, 1148 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5194 GetRequests, 4681 SyntacticMatches, 0 SemanticMatches, 513 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85551occurred in iteration=43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 7 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 13.3s AutomataMinimizationTime, 47 MinimizatonAttempts, 205835 StatesRemovedByMinimization, 41 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 1839 NumberOfFragments, 5281 HoareAnnotationTreeSize, 5 FomulaSimplifications, 473514 FormulaSimplificationTreeSizeReduction, 30.6s HoareSimplificationTime, 5 FomulaSimplificationsInter, 73403 FormulaSimplificationTreeSizeReductionInter, 55.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 5005 NumberOfCodeBlocks, 5005 NumberOfCodeBlocksAsserted, 171 NumberOfCheckSat, 7343 ConstructedInterpolants, 0 QuantifiedInterpolants, 2012067 SizeOfPredicates, 4 NumberOfNonLiveVariables, 5356 ConjunctsInSsa, 287 ConjunctsInUnsatCore, 129 InterpolantComputations, 12 PerfectInterpolantSequences, 1064/21432 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...