./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.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 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 0.1.23-635dfa2 [2018-12-09 11:31:06,737 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 11:31:06,738 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 11:31:06,746 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 11:31:06,746 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 11:31:06,746 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 11:31:06,747 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 11:31:06,748 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 11:31:06,749 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 11:31:06,750 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 11:31:06,750 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 11:31:06,751 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 11:31:06,751 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 11:31:06,752 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 11:31:06,753 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 11:31:06,753 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 11:31:06,753 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 11:31:06,754 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 11:31:06,755 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 11:31:06,756 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 11:31:06,756 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 11:31:06,757 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 11:31:06,759 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 11:31:06,759 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 11:31:06,759 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 11:31:06,760 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 11:31:06,760 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 11:31:06,761 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 11:31:06,761 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 11:31:06,761 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 11:31:06,762 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 11:31:06,762 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 11:31:06,762 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 11:31:06,762 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 11:31:06,763 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 11:31:06,763 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 11:31:06,763 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-12-09 11:31:06,772 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 11:31:06,772 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 11:31:06,773 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 11:31:06,773 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 11:31:06,773 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 11:31:06,773 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 11:31:06,773 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 11:31:06,774 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 11:31:06,774 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 11:31:06,774 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 11:31:06,774 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 11:31:06,774 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 11:31:06,774 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 11:31:06,775 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 11:31:06,775 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 11:31:06,775 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 11:31:06,775 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 11:31:06,776 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 11:31:06,776 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 11:31:06,776 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 11:31:06,776 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-09 11:31:06,776 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 11:31:06,776 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 11:31:06,776 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 11:31:06,777 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 11:31:06,777 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 11:31:06,777 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 11:31:06,777 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 11:31:06,777 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 11:31:06,777 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 11:31:06,777 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 11:31:06,778 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 11:31:06,778 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 11:31:06,778 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 11:31:06,778 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 11:31:06,778 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_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:06,801 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 11:31:06,808 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 11:31:06,810 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 11:31:06,810 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 11:31:06,811 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 11:31:06,811 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random2d_true-termination_true-no-overflow.c [2018-12-09 11:31:06,845 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/bin-2019/utaipan/data/bb45ae5e0/b424e7d4613f4b9097ad3748ac39494f/FLAGc6db87a3c [2018-12-09 11:31:07,134 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 11:31:07,135 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random2d_true-termination_true-no-overflow.c [2018-12-09 11:31:07,138 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/bin-2019/utaipan/data/bb45ae5e0/b424e7d4613f4b9097ad3748ac39494f/FLAGc6db87a3c [2018-12-09 11:31:07,146 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/bin-2019/utaipan/data/bb45ae5e0/b424e7d4613f4b9097ad3748ac39494f [2018-12-09 11:31:07,148 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 11:31:07,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 11:31:07,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 11:31:07,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 11:31:07,152 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 11:31:07,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:31:07" (1/1) ... [2018-12-09 11:31:07,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42aa496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:31:07, skipping insertion in model container [2018-12-09 11:31:07,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:31:07" (1/1) ... [2018-12-09 11:31:07,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 11:31:07,167 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 11:31:07,252 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 11:31:07,254 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 11:31:07,264 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 11:31:07,271 INFO L195 MainTranslator]: Completed translation [2018-12-09 11:31:07,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:31:07 WrapperNode [2018-12-09 11:31:07,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 11:31:07,272 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 11:31:07,272 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 11:31:07,272 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 11:31:07,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:31:07" (1/1) ... [2018-12-09 11:31:07,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:31:07" (1/1) ... [2018-12-09 11:31:07,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 11:31:07,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 11:31:07,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 11:31:07,283 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 11:31:07,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:31:07" (1/1) ... [2018-12-09 11:31:07,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:31:07" (1/1) ... [2018-12-09 11:31:07,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:31:07" (1/1) ... [2018-12-09 11:31:07,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:31:07" (1/1) ... [2018-12-09 11:31:07,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:31:07" (1/1) ... [2018-12-09 11:31:07,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:31:07" (1/1) ... [2018-12-09 11:31:07,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:31:07" (1/1) ... [2018-12-09 11:31:07,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 11:31:07,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 11:31:07,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 11:31:07,323 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 11:31:07,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:31:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:07,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 11:31:07,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 11:31:07,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 11:31:07,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 11:31:07,355 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 11:31:07,355 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 11:31:07,465 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 11:31:07,465 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 11:31:07,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:31:07 BoogieIcfgContainer [2018-12-09 11:31:07,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 11:31:07,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 11:31:07,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 11:31:07,468 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 11:31:07,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 11:31:07" (1/3) ... [2018-12-09 11:31:07,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0ccc73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:31:07, skipping insertion in model container [2018-12-09 11:31:07,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:31:07" (2/3) ... [2018-12-09 11:31:07,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0ccc73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:31:07, skipping insertion in model container [2018-12-09 11:31:07,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:31:07" (3/3) ... [2018-12-09 11:31:07,470 INFO L112 eAbstractionObserver]: Analyzing ICFG ChawdharyCookGulwaniSagivYang-ESOP2008-random2d_true-termination_true-no-overflow.c [2018-12-09 11:31:07,476 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 11:31:07,480 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2018-12-09 11:31:07,489 INFO L257 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2018-12-09 11:31:07,506 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 11:31:07,507 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 11:31:07,507 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 11:31:07,507 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 11:31:07,507 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 11:31:07,507 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 11:31:07,507 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 11:31:07,507 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 11:31:07,517 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-12-09 11:31:07,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-09 11:31:07,520 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:07,521 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:07,522 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:07,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:07,525 INFO L82 PathProgramCache]: Analyzing trace with hash 252417093, now seen corresponding path program 1 times [2018-12-09 11:31:07,528 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:07,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:07,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:07,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:07,559 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:07,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:07,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:31:07,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 11:31:07,603 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:31:07,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 11:31:07,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 11:31:07,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 11:31:07,614 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2018-12-09 11:31:07,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:07,646 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2018-12-09 11:31:07,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 11:31:07,647 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-12-09 11:31:07,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:07,653 INFO L225 Difference]: With dead ends: 48 [2018-12-09 11:31:07,653 INFO L226 Difference]: Without dead ends: 34 [2018-12-09 11:31:07,655 INFO L631 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 [2018-12-09 11:31:07,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-09 11:31:07,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2018-12-09 11:31:07,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 11:31:07,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2018-12-09 11:31:07,676 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 7 [2018-12-09 11:31:07,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:07,677 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2018-12-09 11:31:07,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 11:31:07,677 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2018-12-09 11:31:07,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-09 11:31:07,677 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:07,677 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:07,678 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:07,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:07,678 INFO L82 PathProgramCache]: Analyzing trace with hash -765004662, now seen corresponding path program 1 times [2018-12-09 11:31:07,678 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:07,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:07,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:07,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:07,680 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:07,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:07,694 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:31:07,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 11:31:07,694 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:31:07,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 11:31:07,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 11:31:07,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 11:31:07,696 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 3 states. [2018-12-09 11:31:07,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:07,705 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2018-12-09 11:31:07,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 11:31:07,706 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-12-09 11:31:07,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:07,706 INFO L225 Difference]: With dead ends: 33 [2018-12-09 11:31:07,706 INFO L226 Difference]: Without dead ends: 32 [2018-12-09 11:31:07,707 INFO L631 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 [2018-12-09 11:31:07,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-09 11:31:07,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-12-09 11:31:07,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-12-09 11:31:07,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2018-12-09 11:31:07,710 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 8 [2018-12-09 11:31:07,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:07,710 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2018-12-09 11:31:07,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 11:31:07,710 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2018-12-09 11:31:07,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 11:31:07,710 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:07,710 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:07,711 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:07,711 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:07,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1157363318, now seen corresponding path program 1 times [2018-12-09 11:31:07,711 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:07,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:07,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:07,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:07,712 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:07,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:07,728 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:31:07,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 11:31:07,728 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:31:07,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 11:31:07,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 11:31:07,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 11:31:07,729 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 3 states. [2018-12-09 11:31:07,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:07,750 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2018-12-09 11:31:07,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 11:31:07,751 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-12-09 11:31:07,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:07,751 INFO L225 Difference]: With dead ends: 55 [2018-12-09 11:31:07,751 INFO L226 Difference]: Without dead ends: 53 [2018-12-09 11:31:07,751 INFO L631 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 [2018-12-09 11:31:07,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-12-09 11:31:07,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2018-12-09 11:31:07,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-12-09 11:31:07,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2018-12-09 11:31:07,756 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 11 [2018-12-09 11:31:07,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:07,756 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2018-12-09 11:31:07,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 11:31:07,756 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2018-12-09 11:31:07,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 11:31:07,756 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:07,757 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:07,757 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:07,757 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:07,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1157326159, now seen corresponding path program 1 times [2018-12-09 11:31:07,757 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:07,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:07,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:07,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:07,758 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:07,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 11:31:07,778 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:07,778 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:07,778 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-12-09 11:31:07,779 INFO L205 CegarAbsIntRunner]: [0], [4], [13], [14], [15], [17], [59], [66], [67], [68] [2018-12-09 11:31:07,798 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 11:31:07,798 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 11:31:07,887 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 11:31:07,887 INFO L272 AbstractInterpreter]: Visited 10 different actions 20 times. Merged at 4 different actions 8 times. Never widened. Performed 87 root evaluator evaluations with a maximum evaluation depth of 3. Performed 87 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 6 variables. [2018-12-09 11:31:07,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:07,894 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 11:31:07,894 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:07,894 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:07,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:07,901 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 11:31:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:07,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:07,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:07,935 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:07,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:07,965 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:07,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2018-12-09 11:31:07,965 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:07,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 11:31:07,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 11:31:07,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-12-09 11:31:07,966 INFO L87 Difference]: Start difference. First operand 47 states and 63 transitions. Second operand 6 states. [2018-12-09 11:31:08,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:08,004 INFO L93 Difference]: Finished difference Result 108 states and 146 transitions. [2018-12-09 11:31:08,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 11:31:08,005 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-12-09 11:31:08,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:08,005 INFO L225 Difference]: With dead ends: 108 [2018-12-09 11:31:08,005 INFO L226 Difference]: Without dead ends: 107 [2018-12-09 11:31:08,006 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2018-12-09 11:31:08,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-12-09 11:31:08,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 44. [2018-12-09 11:31:08,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-09 11:31:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 59 transitions. [2018-12-09 11:31:08,010 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 59 transitions. Word has length 11 [2018-12-09 11:31:08,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:08,010 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 59 transitions. [2018-12-09 11:31:08,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 11:31:08,010 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 59 transitions. [2018-12-09 11:31:08,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 11:31:08,011 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:08,011 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:08,011 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:08,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:08,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1518524433, now seen corresponding path program 1 times [2018-12-09 11:31:08,011 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:08,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:08,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:08,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:08,013 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:08,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:08,031 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:31:08,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 11:31:08,031 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:31:08,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 11:31:08,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 11:31:08,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 11:31:08,032 INFO L87 Difference]: Start difference. First operand 44 states and 59 transitions. Second operand 3 states. [2018-12-09 11:31:08,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:08,054 INFO L93 Difference]: Finished difference Result 81 states and 113 transitions. [2018-12-09 11:31:08,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 11:31:08,054 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-12-09 11:31:08,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:08,055 INFO L225 Difference]: With dead ends: 81 [2018-12-09 11:31:08,055 INFO L226 Difference]: Without dead ends: 79 [2018-12-09 11:31:08,056 INFO L631 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 [2018-12-09 11:31:08,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-12-09 11:31:08,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2018-12-09 11:31:08,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-12-09 11:31:08,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 110 transitions. [2018-12-09 11:31:08,062 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 110 transitions. Word has length 12 [2018-12-09 11:31:08,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:08,062 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 110 transitions. [2018-12-09 11:31:08,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 11:31:08,063 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 110 transitions. [2018-12-09 11:31:08,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 11:31:08,063 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:08,063 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:08,063 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:08,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:08,064 INFO L82 PathProgramCache]: Analyzing trace with hash 170574579, now seen corresponding path program 1 times [2018-12-09 11:31:08,064 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:08,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:08,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:08,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:08,065 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:08,086 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:31:08,087 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 11:31:08,087 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:31:08,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 11:31:08,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 11:31:08,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 11:31:08,087 INFO L87 Difference]: Start difference. First operand 75 states and 110 transitions. Second operand 3 states. [2018-12-09 11:31:08,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:08,107 INFO L93 Difference]: Finished difference Result 143 states and 215 transitions. [2018-12-09 11:31:08,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 11:31:08,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-12-09 11:31:08,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:08,109 INFO L225 Difference]: With dead ends: 143 [2018-12-09 11:31:08,109 INFO L226 Difference]: Without dead ends: 141 [2018-12-09 11:31:08,109 INFO L631 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 [2018-12-09 11:31:08,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-12-09 11:31:08,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 133. [2018-12-09 11:31:08,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-12-09 11:31:08,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 199 transitions. [2018-12-09 11:31:08,121 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 199 transitions. Word has length 13 [2018-12-09 11:31:08,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:08,121 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 199 transitions. [2018-12-09 11:31:08,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 11:31:08,122 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 199 transitions. [2018-12-09 11:31:08,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-09 11:31:08,122 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:08,122 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:08,122 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:08,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:08,123 INFO L82 PathProgramCache]: Analyzing trace with hash 992844728, now seen corresponding path program 1 times [2018-12-09 11:31:08,123 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:08,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:08,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:08,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:08,124 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:08,137 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:31:08,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 11:31:08,137 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:31:08,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 11:31:08,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 11:31:08,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 11:31:08,138 INFO L87 Difference]: Start difference. First operand 133 states and 199 transitions. Second operand 3 states. [2018-12-09 11:31:08,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:08,156 INFO L93 Difference]: Finished difference Result 259 states and 393 transitions. [2018-12-09 11:31:08,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 11:31:08,157 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-12-09 11:31:08,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:08,158 INFO L225 Difference]: With dead ends: 259 [2018-12-09 11:31:08,158 INFO L226 Difference]: Without dead ends: 257 [2018-12-09 11:31:08,158 INFO L631 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 [2018-12-09 11:31:08,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-12-09 11:31:08,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 253. [2018-12-09 11:31:08,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-12-09 11:31:08,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 381 transitions. [2018-12-09 11:31:08,171 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 381 transitions. Word has length 14 [2018-12-09 11:31:08,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:08,171 INFO L480 AbstractCegarLoop]: Abstraction has 253 states and 381 transitions. [2018-12-09 11:31:08,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 11:31:08,171 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 381 transitions. [2018-12-09 11:31:08,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-09 11:31:08,172 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:08,172 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:08,172 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:08,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:08,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1784292138, now seen corresponding path program 1 times [2018-12-09 11:31:08,173 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:08,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:08,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:08,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:08,174 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:08,194 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:08,195 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:08,195 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:08,195 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2018-12-09 11:31:08,195 INFO L205 CegarAbsIntRunner]: [0], [4], [13], [15], [17], [20], [23], [24], [25], [27], [66], [67], [68] [2018-12-09 11:31:08,196 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 11:31:08,196 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 11:31:08,229 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 11:31:08,230 INFO L272 AbstractInterpreter]: Visited 13 different actions 37 times. Merged at 7 different actions 21 times. Never widened. Performed 186 root evaluator evaluations with a maximum evaluation depth of 3. Performed 186 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 6 variables. [2018-12-09 11:31:08,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:08,231 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 11:31:08,231 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:08,231 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:08,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:08,238 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 11:31:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:08,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:08,249 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:08,249 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:08,274 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:08,288 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:08,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2018-12-09 11:31:08,288 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:08,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 11:31:08,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 11:31:08,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-09 11:31:08,289 INFO L87 Difference]: Start difference. First operand 253 states and 381 transitions. Second operand 4 states. [2018-12-09 11:31:08,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:08,316 INFO L93 Difference]: Finished difference Result 453 states and 692 transitions. [2018-12-09 11:31:08,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 11:31:08,317 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-12-09 11:31:08,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:08,318 INFO L225 Difference]: With dead ends: 453 [2018-12-09 11:31:08,318 INFO L226 Difference]: Without dead ends: 451 [2018-12-09 11:31:08,318 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-09 11:31:08,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2018-12-09 11:31:08,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 361. [2018-12-09 11:31:08,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-12-09 11:31:08,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 547 transitions. [2018-12-09 11:31:08,331 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 547 transitions. Word has length 18 [2018-12-09 11:31:08,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:08,332 INFO L480 AbstractCegarLoop]: Abstraction has 361 states and 547 transitions. [2018-12-09 11:31:08,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 11:31:08,332 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 547 transitions. [2018-12-09 11:31:08,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-09 11:31:08,333 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:08,333 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:08,333 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:08,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:08,333 INFO L82 PathProgramCache]: Analyzing trace with hash -457667387, now seen corresponding path program 1 times [2018-12-09 11:31:08,333 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:08,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:08,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:08,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:08,335 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:08,353 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:08,354 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:08,354 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:08,354 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-12-09 11:31:08,354 INFO L205 CegarAbsIntRunner]: [0], [4], [13], [15], [17], [20], [23], [25], [26], [29], [32], [34], [36], [66], [67], [68] [2018-12-09 11:31:08,355 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 11:31:08,355 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 11:31:08,406 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 11:31:08,407 INFO L272 AbstractInterpreter]: Visited 16 different actions 60 times. Merged at 11 different actions 41 times. Never widened. Performed 290 root evaluator evaluations with a maximum evaluation depth of 3. Performed 290 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 6 variables. [2018-12-09 11:31:08,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:08,408 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 11:31:08,408 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:08,408 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:08,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:08,414 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 11:31:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:08,421 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:08,426 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:08,426 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:08,464 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-12-09 11:31:08,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 5 [2018-12-09 11:31:08,465 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:31:08,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 11:31:08,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 11:31:08,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-09 11:31:08,465 INFO L87 Difference]: Start difference. First operand 361 states and 547 transitions. Second operand 3 states. [2018-12-09 11:31:08,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:08,483 INFO L93 Difference]: Finished difference Result 361 states and 547 transitions. [2018-12-09 11:31:08,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 11:31:08,484 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-12-09 11:31:08,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:08,485 INFO L225 Difference]: With dead ends: 361 [2018-12-09 11:31:08,486 INFO L226 Difference]: Without dead ends: 360 [2018-12-09 11:31:08,486 INFO L631 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 [2018-12-09 11:31:08,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2018-12-09 11:31:08,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2018-12-09 11:31:08,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2018-12-09 11:31:08,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 539 transitions. [2018-12-09 11:31:08,501 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 539 transitions. Word has length 20 [2018-12-09 11:31:08,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:08,501 INFO L480 AbstractCegarLoop]: Abstraction has 360 states and 539 transitions. [2018-12-09 11:31:08,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 11:31:08,502 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 539 transitions. [2018-12-09 11:31:08,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-09 11:31:08,502 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:08,502 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:08,503 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:08,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:08,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1302601353, now seen corresponding path program 1 times [2018-12-09 11:31:08,503 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:08,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:08,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:08,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:08,504 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:08,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:08,528 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:08,528 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:08,528 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 22 with the following transitions: [2018-12-09 11:31:08,528 INFO L205 CegarAbsIntRunner]: [0], [4], [13], [15], [17], [20], [29], [32], [34], [35], [36], [66], [67], [68] [2018-12-09 11:31:08,529 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 11:31:08,529 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 11:31:08,564 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 11:31:08,564 INFO L272 AbstractInterpreter]: Visited 14 different actions 41 times. Merged at 8 different actions 24 times. Never widened. Performed 198 root evaluator evaluations with a maximum evaluation depth of 3. Performed 198 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 6 variables. [2018-12-09 11:31:08,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:08,566 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 11:31:08,566 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:08,566 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:08,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:08,575 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 11:31:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:08,582 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:08,584 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:08,584 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:08,598 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:08,620 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:08,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2018-12-09 11:31:08,620 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:08,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 11:31:08,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 11:31:08,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-09 11:31:08,621 INFO L87 Difference]: Start difference. First operand 360 states and 539 transitions. Second operand 4 states. [2018-12-09 11:31:08,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:08,650 INFO L93 Difference]: Finished difference Result 613 states and 923 transitions. [2018-12-09 11:31:08,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 11:31:08,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-12-09 11:31:08,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:08,652 INFO L225 Difference]: With dead ends: 613 [2018-12-09 11:31:08,653 INFO L226 Difference]: Without dead ends: 612 [2018-12-09 11:31:08,653 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-09 11:31:08,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2018-12-09 11:31:08,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 468. [2018-12-09 11:31:08,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2018-12-09 11:31:08,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 705 transitions. [2018-12-09 11:31:08,673 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 705 transitions. Word has length 21 [2018-12-09 11:31:08,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:08,674 INFO L480 AbstractCegarLoop]: Abstraction has 468 states and 705 transitions. [2018-12-09 11:31:08,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 11:31:08,674 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 705 transitions. [2018-12-09 11:31:08,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 11:31:08,675 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:08,675 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:08,675 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:08,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:08,675 INFO L82 PathProgramCache]: Analyzing trace with hash -789737976, now seen corresponding path program 1 times [2018-12-09 11:31:08,676 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:08,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:08,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:08,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:08,677 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:08,703 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:08,703 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:08,703 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:08,704 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2018-12-09 11:31:08,704 INFO L205 CegarAbsIntRunner]: [0], [4], [13], [15], [17], [20], [29], [38], [41], [42], [43], [45], [66], [67], [68] [2018-12-09 11:31:08,705 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 11:31:08,705 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 11:31:08,738 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 11:31:08,738 INFO L272 AbstractInterpreter]: Visited 15 different actions 45 times. Merged at 9 different actions 27 times. Never widened. Performed 210 root evaluator evaluations with a maximum evaluation depth of 3. Performed 210 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 6 variables. [2018-12-09 11:31:08,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:08,742 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 11:31:08,742 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:08,742 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:08,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:08,749 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 11:31:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:08,756 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:08,759 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:08,759 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:08,771 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:08,786 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:08,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2018-12-09 11:31:08,786 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:08,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 11:31:08,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 11:31:08,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-09 11:31:08,787 INFO L87 Difference]: Start difference. First operand 468 states and 705 transitions. Second operand 4 states. [2018-12-09 11:31:08,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:08,818 INFO L93 Difference]: Finished difference Result 838 states and 1288 transitions. [2018-12-09 11:31:08,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 11:31:08,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-12-09 11:31:08,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:08,820 INFO L225 Difference]: With dead ends: 838 [2018-12-09 11:31:08,820 INFO L226 Difference]: Without dead ends: 836 [2018-12-09 11:31:08,820 INFO L631 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 [2018-12-09 11:31:08,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2018-12-09 11:31:08,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 672. [2018-12-09 11:31:08,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 672 states. [2018-12-09 11:31:08,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1011 transitions. [2018-12-09 11:31:08,835 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1011 transitions. Word has length 22 [2018-12-09 11:31:08,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:08,835 INFO L480 AbstractCegarLoop]: Abstraction has 672 states and 1011 transitions. [2018-12-09 11:31:08,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 11:31:08,835 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1011 transitions. [2018-12-09 11:31:08,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-09 11:31:08,836 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:08,836 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:08,836 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:08,836 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:08,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1545985083, now seen corresponding path program 1 times [2018-12-09 11:31:08,836 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:08,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:08,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:08,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:08,837 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:08,859 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:08,860 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:08,860 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:08,860 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-12-09 11:31:08,860 INFO L205 CegarAbsIntRunner]: [0], [4], [13], [15], [17], [20], [29], [38], [41], [43], [44], [47], [50], [52], [54], [66], [67], [68] [2018-12-09 11:31:08,861 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 11:31:08,861 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 11:31:08,893 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 11:31:08,894 INFO L272 AbstractInterpreter]: Visited 18 different actions 57 times. Merged at 12 different actions 36 times. Never widened. Performed 246 root evaluator evaluations with a maximum evaluation depth of 3. Performed 246 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 6 variables. [2018-12-09 11:31:08,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:08,895 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 11:31:08,895 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:08,895 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:08,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:08,902 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 11:31:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:08,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:08,919 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:08,919 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:08,958 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-12-09 11:31:08,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 5 [2018-12-09 11:31:08,959 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:31:08,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 11:31:08,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 11:31:08,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-09 11:31:08,960 INFO L87 Difference]: Start difference. First operand 672 states and 1011 transitions. Second operand 3 states. [2018-12-09 11:31:08,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:08,977 INFO L93 Difference]: Finished difference Result 672 states and 1011 transitions. [2018-12-09 11:31:08,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 11:31:08,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2018-12-09 11:31:08,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:08,979 INFO L225 Difference]: With dead ends: 672 [2018-12-09 11:31:08,979 INFO L226 Difference]: Without dead ends: 671 [2018-12-09 11:31:08,979 INFO L631 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 [2018-12-09 11:31:08,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2018-12-09 11:31:08,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 671. [2018-12-09 11:31:08,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2018-12-09 11:31:08,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 995 transitions. [2018-12-09 11:31:08,994 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 995 transitions. Word has length 24 [2018-12-09 11:31:08,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:08,995 INFO L480 AbstractCegarLoop]: Abstraction has 671 states and 995 transitions. [2018-12-09 11:31:08,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 11:31:08,995 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 995 transitions. [2018-12-09 11:31:08,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 11:31:08,995 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:08,995 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:08,996 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:08,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:08,996 INFO L82 PathProgramCache]: Analyzing trace with hash 582614026, now seen corresponding path program 2 times [2018-12-09 11:31:08,996 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:08,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:08,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:08,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:08,997 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:09,016 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:09,016 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:09,016 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:09,016 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:09,016 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:09,016 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:09,017 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:09,025 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 11:31:09,025 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 11:31:09,033 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-09 11:31:09,034 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:31:09,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:09,038 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:09,038 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:09,071 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:09,094 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:09,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2018-12-09 11:31:09,094 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:09,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 11:31:09,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 11:31:09,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-12-09 11:31:09,095 INFO L87 Difference]: Start difference. First operand 671 states and 995 transitions. Second operand 5 states. [2018-12-09 11:31:09,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:09,149 INFO L93 Difference]: Finished difference Result 1156 states and 1733 transitions. [2018-12-09 11:31:09,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 11:31:09,150 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-12-09 11:31:09,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:09,153 INFO L225 Difference]: With dead ends: 1156 [2018-12-09 11:31:09,153 INFO L226 Difference]: Without dead ends: 1154 [2018-12-09 11:31:09,154 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-12-09 11:31:09,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2018-12-09 11:31:09,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 917. [2018-12-09 11:31:09,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 917 states. [2018-12-09 11:31:09,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1355 transitions. [2018-12-09 11:31:09,187 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1355 transitions. Word has length 25 [2018-12-09 11:31:09,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:09,187 INFO L480 AbstractCegarLoop]: Abstraction has 917 states and 1355 transitions. [2018-12-09 11:31:09,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 11:31:09,187 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1355 transitions. [2018-12-09 11:31:09,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 11:31:09,188 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:09,188 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:09,188 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:09,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:09,189 INFO L82 PathProgramCache]: Analyzing trace with hash -680711543, now seen corresponding path program 1 times [2018-12-09 11:31:09,189 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:09,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:09,190 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:31:09,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:09,190 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:09,216 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:09,216 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:09,216 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:09,216 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 26 with the following transitions: [2018-12-09 11:31:09,217 INFO L205 CegarAbsIntRunner]: [0], [4], [13], [15], [17], [20], [29], [38], [47], [50], [52], [53], [54], [66], [67], [68] [2018-12-09 11:31:09,218 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 11:31:09,218 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 11:31:09,262 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 11:31:09,262 INFO L272 AbstractInterpreter]: Visited 16 different actions 60 times. Merged at 11 different actions 41 times. Never widened. Performed 290 root evaluator evaluations with a maximum evaluation depth of 3. Performed 290 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 6 variables. [2018-12-09 11:31:09,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:09,266 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 11:31:09,266 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:09,266 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:09,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:09,275 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 11:31:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:09,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:09,283 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:09,283 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:09,292 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:09,306 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:09,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2018-12-09 11:31:09,306 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:09,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 11:31:09,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 11:31:09,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-09 11:31:09,307 INFO L87 Difference]: Start difference. First operand 917 states and 1355 transitions. Second operand 4 states. [2018-12-09 11:31:09,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:09,343 INFO L93 Difference]: Finished difference Result 1561 states and 2332 transitions. [2018-12-09 11:31:09,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 11:31:09,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-12-09 11:31:09,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:09,346 INFO L225 Difference]: With dead ends: 1561 [2018-12-09 11:31:09,346 INFO L226 Difference]: Without dead ends: 1560 [2018-12-09 11:31:09,347 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-09 11:31:09,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2018-12-09 11:31:09,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1197. [2018-12-09 11:31:09,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2018-12-09 11:31:09,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1772 transitions. [2018-12-09 11:31:09,369 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1772 transitions. Word has length 25 [2018-12-09 11:31:09,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:09,369 INFO L480 AbstractCegarLoop]: Abstraction has 1197 states and 1772 transitions. [2018-12-09 11:31:09,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 11:31:09,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1772 transitions. [2018-12-09 11:31:09,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-09 11:31:09,369 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:09,369 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:09,370 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:09,370 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:09,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1259703649, now seen corresponding path program 2 times [2018-12-09 11:31:09,370 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:09,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:09,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:09,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:09,371 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:09,397 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:09,397 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:09,397 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:09,397 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:09,397 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:09,397 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:09,397 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:09,404 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 11:31:09,405 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 11:31:09,411 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-09 11:31:09,411 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:31:09,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:09,414 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:09,414 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:09,457 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:09,481 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:09,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2018-12-09 11:31:09,481 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:09,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 11:31:09,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 11:31:09,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-12-09 11:31:09,482 INFO L87 Difference]: Start difference. First operand 1197 states and 1772 transitions. Second operand 5 states. [2018-12-09 11:31:09,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:09,542 INFO L93 Difference]: Finished difference Result 1955 states and 2906 transitions. [2018-12-09 11:31:09,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 11:31:09,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-12-09 11:31:09,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:09,547 INFO L225 Difference]: With dead ends: 1955 [2018-12-09 11:31:09,547 INFO L226 Difference]: Without dead ends: 1954 [2018-12-09 11:31:09,548 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-12-09 11:31:09,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2018-12-09 11:31:09,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1433. [2018-12-09 11:31:09,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1433 states. [2018-12-09 11:31:09,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 2118 transitions. [2018-12-09 11:31:09,588 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 2118 transitions. Word has length 29 [2018-12-09 11:31:09,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:09,588 INFO L480 AbstractCegarLoop]: Abstraction has 1433 states and 2118 transitions. [2018-12-09 11:31:09,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 11:31:09,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 2118 transitions. [2018-12-09 11:31:09,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-09 11:31:09,589 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:09,589 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:09,590 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:09,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:09,590 INFO L82 PathProgramCache]: Analyzing trace with hash -886740333, now seen corresponding path program 2 times [2018-12-09 11:31:09,590 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:09,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:09,591 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:31:09,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:09,591 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:09,614 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:09,614 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:09,614 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:09,615 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:09,615 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:09,615 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:09,615 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:09,623 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 11:31:09,623 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 11:31:09,631 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-09 11:31:09,632 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:31:09,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:09,636 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:09,636 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:09,666 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:09,692 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:09,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2018-12-09 11:31:09,692 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:09,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 11:31:09,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 11:31:09,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-12-09 11:31:09,693 INFO L87 Difference]: Start difference. First operand 1433 states and 2118 transitions. Second operand 5 states. [2018-12-09 11:31:09,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:09,747 INFO L93 Difference]: Finished difference Result 2466 states and 3697 transitions. [2018-12-09 11:31:09,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 11:31:09,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2018-12-09 11:31:09,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:09,752 INFO L225 Difference]: With dead ends: 2466 [2018-12-09 11:31:09,752 INFO L226 Difference]: Without dead ends: 2464 [2018-12-09 11:31:09,753 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-12-09 11:31:09,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2018-12-09 11:31:09,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 1963. [2018-12-09 11:31:09,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1963 states. [2018-12-09 11:31:09,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1963 states to 1963 states and 2886 transitions. [2018-12-09 11:31:09,791 INFO L78 Accepts]: Start accepts. Automaton has 1963 states and 2886 transitions. Word has length 31 [2018-12-09 11:31:09,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:09,791 INFO L480 AbstractCegarLoop]: Abstraction has 1963 states and 2886 transitions. [2018-12-09 11:31:09,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 11:31:09,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1963 states and 2886 transitions. [2018-12-09 11:31:09,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-09 11:31:09,792 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:09,792 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:09,792 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:09,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:09,792 INFO L82 PathProgramCache]: Analyzing trace with hash -716039594, now seen corresponding path program 3 times [2018-12-09 11:31:09,792 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:09,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:09,793 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:31:09,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:09,793 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:09,828 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:09,829 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:09,829 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:09,829 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:09,829 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:09,829 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:09,829 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:09,835 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 11:31:09,835 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-09 11:31:09,843 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 11:31:09,843 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:31:09,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:09,848 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:09,848 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:09,897 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:09,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2018-12-09 11:31:09,897 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:09,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 11:31:09,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 11:31:09,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-12-09 11:31:09,898 INFO L87 Difference]: Start difference. First operand 1963 states and 2886 transitions. Second operand 6 states. [2018-12-09 11:31:09,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:09,956 INFO L93 Difference]: Finished difference Result 3177 states and 4736 transitions. [2018-12-09 11:31:09,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 11:31:09,957 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2018-12-09 11:31:09,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:09,962 INFO L225 Difference]: With dead ends: 3177 [2018-12-09 11:31:09,962 INFO L226 Difference]: Without dead ends: 3175 [2018-12-09 11:31:09,963 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-12-09 11:31:09,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3175 states. [2018-12-09 11:31:10,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3175 to 2567. [2018-12-09 11:31:10,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2567 states. [2018-12-09 11:31:10,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2567 states to 2567 states and 3753 transitions. [2018-12-09 11:31:10,007 INFO L78 Accepts]: Start accepts. Automaton has 2567 states and 3753 transitions. Word has length 32 [2018-12-09 11:31:10,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:10,007 INFO L480 AbstractCegarLoop]: Abstraction has 2567 states and 3753 transitions. [2018-12-09 11:31:10,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 11:31:10,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2567 states and 3753 transitions. [2018-12-09 11:31:10,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-09 11:31:10,007 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:10,007 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:10,008 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:10,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:10,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1327564892, now seen corresponding path program 2 times [2018-12-09 11:31:10,008 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:10,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:10,008 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:31:10,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:10,009 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:10,042 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:10,042 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:10,042 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:10,042 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:10,042 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:10,042 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:10,042 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:10,051 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 11:31:10,051 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 11:31:10,059 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-09 11:31:10,059 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:31:10,060 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:10,064 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:10,084 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:10,109 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:10,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2018-12-09 11:31:10,109 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:10,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 11:31:10,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 11:31:10,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-12-09 11:31:10,110 INFO L87 Difference]: Start difference. First operand 2567 states and 3753 transitions. Second operand 5 states. [2018-12-09 11:31:10,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:10,187 INFO L93 Difference]: Finished difference Result 4186 states and 6159 transitions. [2018-12-09 11:31:10,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 11:31:10,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-12-09 11:31:10,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:10,197 INFO L225 Difference]: With dead ends: 4186 [2018-12-09 11:31:10,197 INFO L226 Difference]: Without dead ends: 4185 [2018-12-09 11:31:10,199 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-12-09 11:31:10,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4185 states. [2018-12-09 11:31:10,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4185 to 3075. [2018-12-09 11:31:10,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3075 states. [2018-12-09 11:31:10,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3075 states to 3075 states and 4487 transitions. [2018-12-09 11:31:10,271 INFO L78 Accepts]: Start accepts. Automaton has 3075 states and 4487 transitions. Word has length 35 [2018-12-09 11:31:10,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:10,271 INFO L480 AbstractCegarLoop]: Abstraction has 3075 states and 4487 transitions. [2018-12-09 11:31:10,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 11:31:10,271 INFO L276 IsEmpty]: Start isEmpty. Operand 3075 states and 4487 transitions. [2018-12-09 11:31:10,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-09 11:31:10,272 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:10,272 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:10,272 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:10,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:10,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1468116811, now seen corresponding path program 3 times [2018-12-09 11:31:10,273 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:10,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:10,273 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:31:10,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:10,273 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:10,307 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:10,307 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:10,307 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:10,307 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:10,307 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:10,307 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:10,308 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:10,317 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 11:31:10,317 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-09 11:31:10,327 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 11:31:10,327 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:31:10,328 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:10,334 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:10,334 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:10,364 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:10,385 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:10,385 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2018-12-09 11:31:10,385 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:10,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 11:31:10,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 11:31:10,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-12-09 11:31:10,385 INFO L87 Difference]: Start difference. First operand 3075 states and 4487 transitions. Second operand 6 states. [2018-12-09 11:31:10,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:10,454 INFO L93 Difference]: Finished difference Result 4731 states and 6951 transitions. [2018-12-09 11:31:10,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 11:31:10,454 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2018-12-09 11:31:10,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:10,466 INFO L225 Difference]: With dead ends: 4731 [2018-12-09 11:31:10,466 INFO L226 Difference]: Without dead ends: 4730 [2018-12-09 11:31:10,468 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-12-09 11:31:10,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4730 states. [2018-12-09 11:31:10,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4730 to 3463. [2018-12-09 11:31:10,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3463 states. [2018-12-09 11:31:10,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3463 states to 3463 states and 5051 transitions. [2018-12-09 11:31:10,549 INFO L78 Accepts]: Start accepts. Automaton has 3463 states and 5051 transitions. Word has length 37 [2018-12-09 11:31:10,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:10,550 INFO L480 AbstractCegarLoop]: Abstraction has 3463 states and 5051 transitions. [2018-12-09 11:31:10,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 11:31:10,550 INFO L276 IsEmpty]: Start isEmpty. Operand 3463 states and 5051 transitions. [2018-12-09 11:31:10,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-09 11:31:10,550 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:10,550 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:10,550 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:10,551 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:10,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1042968950, now seen corresponding path program 4 times [2018-12-09 11:31:10,551 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:10,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:10,551 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:31:10,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:10,551 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:10,594 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:10,594 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:10,594 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:10,594 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:10,594 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:10,594 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:10,594 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:10,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:10,604 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 11:31:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:10,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:10,614 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:10,614 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:10,658 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:10,673 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:10,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2018-12-09 11:31:10,673 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:10,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 11:31:10,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 11:31:10,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-12-09 11:31:10,674 INFO L87 Difference]: Start difference. First operand 3463 states and 5051 transitions. Second operand 7 states. [2018-12-09 11:31:10,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:10,734 INFO L93 Difference]: Finished difference Result 5330 states and 7888 transitions. [2018-12-09 11:31:10,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 11:31:10,735 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2018-12-09 11:31:10,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:10,743 INFO L225 Difference]: With dead ends: 5330 [2018-12-09 11:31:10,743 INFO L226 Difference]: Without dead ends: 5328 [2018-12-09 11:31:10,745 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-12-09 11:31:10,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5328 states. [2018-12-09 11:31:10,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5328 to 4381. [2018-12-09 11:31:10,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4381 states. [2018-12-09 11:31:10,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4381 states to 4381 states and 6357 transitions. [2018-12-09 11:31:10,802 INFO L78 Accepts]: Start accepts. Automaton has 4381 states and 6357 transitions. Word has length 39 [2018-12-09 11:31:10,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:10,802 INFO L480 AbstractCegarLoop]: Abstraction has 4381 states and 6357 transitions. [2018-12-09 11:31:10,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 11:31:10,803 INFO L276 IsEmpty]: Start isEmpty. Operand 4381 states and 6357 transitions. [2018-12-09 11:31:10,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-09 11:31:10,803 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:10,803 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:10,803 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:10,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:10,804 INFO L82 PathProgramCache]: Analyzing trace with hash 535132776, now seen corresponding path program 3 times [2018-12-09 11:31:10,804 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:10,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:10,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:10,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:10,804 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:10,834 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:10,834 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:10,834 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:10,834 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:10,834 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:10,834 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:10,834 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:10,840 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 11:31:10,841 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-09 11:31:10,847 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 11:31:10,847 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:31:10,848 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:10,850 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:10,851 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:10,881 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:10,896 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:10,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2018-12-09 11:31:10,896 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:10,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 11:31:10,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 11:31:10,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-12-09 11:31:10,897 INFO L87 Difference]: Start difference. First operand 4381 states and 6357 transitions. Second operand 6 states. [2018-12-09 11:31:10,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:10,966 INFO L93 Difference]: Finished difference Result 7073 states and 10429 transitions. [2018-12-09 11:31:10,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 11:31:10,966 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2018-12-09 11:31:10,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:10,974 INFO L225 Difference]: With dead ends: 7073 [2018-12-09 11:31:10,974 INFO L226 Difference]: Without dead ends: 7071 [2018-12-09 11:31:10,977 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-12-09 11:31:10,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7071 states. [2018-12-09 11:31:11,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7071 to 5733. [2018-12-09 11:31:11,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5733 states. [2018-12-09 11:31:11,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5733 states to 5733 states and 8269 transitions. [2018-12-09 11:31:11,051 INFO L78 Accepts]: Start accepts. Automaton has 5733 states and 8269 transitions. Word has length 40 [2018-12-09 11:31:11,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:11,051 INFO L480 AbstractCegarLoop]: Abstraction has 5733 states and 8269 transitions. [2018-12-09 11:31:11,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 11:31:11,052 INFO L276 IsEmpty]: Start isEmpty. Operand 5733 states and 8269 transitions. [2018-12-09 11:31:11,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-12-09 11:31:11,052 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:11,052 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:11,053 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:11,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:11,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1865791691, now seen corresponding path program 4 times [2018-12-09 11:31:11,053 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:11,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:11,054 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:31:11,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:11,054 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:11,094 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:11,094 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:11,094 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:11,095 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:11,095 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:11,095 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:11,095 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:11,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:11,103 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 11:31:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:11,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:11,115 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:11,115 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:11,152 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:11,172 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:11,172 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2018-12-09 11:31:11,173 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:11,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 11:31:11,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 11:31:11,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-12-09 11:31:11,173 INFO L87 Difference]: Start difference. First operand 5733 states and 8269 transitions. Second operand 7 states. [2018-12-09 11:31:11,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:11,260 INFO L93 Difference]: Finished difference Result 8442 states and 12279 transitions. [2018-12-09 11:31:11,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 11:31:11,261 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2018-12-09 11:31:11,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:11,272 INFO L225 Difference]: With dead ends: 8442 [2018-12-09 11:31:11,272 INFO L226 Difference]: Without dead ends: 8441 [2018-12-09 11:31:11,276 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-12-09 11:31:11,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8441 states. [2018-12-09 11:31:11,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8441 to 6241. [2018-12-09 11:31:11,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6241 states. [2018-12-09 11:31:11,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6241 states to 6241 states and 9003 transitions. [2018-12-09 11:31:11,374 INFO L78 Accepts]: Start accepts. Automaton has 6241 states and 9003 transitions. Word has length 45 [2018-12-09 11:31:11,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:11,375 INFO L480 AbstractCegarLoop]: Abstraction has 6241 states and 9003 transitions. [2018-12-09 11:31:11,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 11:31:11,375 INFO L276 IsEmpty]: Start isEmpty. Operand 6241 states and 9003 transitions. [2018-12-09 11:31:11,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-12-09 11:31:11,376 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:11,376 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:11,376 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:11,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:11,376 INFO L82 PathProgramCache]: Analyzing trace with hash 702806639, now seen corresponding path program 3 times [2018-12-09 11:31:11,376 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:11,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:11,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:11,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:11,377 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:11,406 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:11,406 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:11,406 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:11,406 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:11,406 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:11,406 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:11,406 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:11,417 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 11:31:11,417 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-09 11:31:11,427 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 11:31:11,427 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:31:11,428 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:11,434 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:11,434 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:11,478 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:11,492 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:11,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2018-12-09 11:31:11,493 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:11,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 11:31:11,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 11:31:11,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-12-09 11:31:11,493 INFO L87 Difference]: Start difference. First operand 6241 states and 9003 transitions. Second operand 6 states. [2018-12-09 11:31:11,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:11,579 INFO L93 Difference]: Finished difference Result 9588 states and 13947 transitions. [2018-12-09 11:31:11,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 11:31:11,579 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2018-12-09 11:31:11,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:11,588 INFO L225 Difference]: With dead ends: 9588 [2018-12-09 11:31:11,588 INFO L226 Difference]: Without dead ends: 9587 [2018-12-09 11:31:11,593 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-12-09 11:31:11,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9587 states. [2018-12-09 11:31:11,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9587 to 7029. [2018-12-09 11:31:11,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7029 states. [2018-12-09 11:31:11,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7029 states to 7029 states and 10135 transitions. [2018-12-09 11:31:11,717 INFO L78 Accepts]: Start accepts. Automaton has 7029 states and 10135 transitions. Word has length 45 [2018-12-09 11:31:11,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:11,717 INFO L480 AbstractCegarLoop]: Abstraction has 7029 states and 10135 transitions. [2018-12-09 11:31:11,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 11:31:11,717 INFO L276 IsEmpty]: Start isEmpty. Operand 7029 states and 10135 transitions. [2018-12-09 11:31:11,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-12-09 11:31:11,718 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:11,718 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:11,718 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:11,718 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:11,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1845802966, now seen corresponding path program 5 times [2018-12-09 11:31:11,718 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:11,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:11,719 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:31:11,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:11,719 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:11,755 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:11,755 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:11,755 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:11,755 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:11,755 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:11,755 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:11,755 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:11,762 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 11:31:11,762 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 11:31:11,771 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-12-09 11:31:11,771 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:31:11,772 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:11,775 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:11,775 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:11,831 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:11,845 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:11,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2018-12-09 11:31:11,846 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:11,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 11:31:11,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 11:31:11,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-12-09 11:31:11,846 INFO L87 Difference]: Start difference. First operand 7029 states and 10135 transitions. Second operand 8 states. [2018-12-09 11:31:11,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:11,953 INFO L93 Difference]: Finished difference Result 10385 states and 15210 transitions. [2018-12-09 11:31:11,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 11:31:11,953 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2018-12-09 11:31:11,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:11,959 INFO L225 Difference]: With dead ends: 10385 [2018-12-09 11:31:11,959 INFO L226 Difference]: Without dead ends: 10383 [2018-12-09 11:31:11,963 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-12-09 11:31:11,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10383 states. [2018-12-09 11:31:12,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10383 to 8669. [2018-12-09 11:31:12,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8669 states. [2018-12-09 11:31:12,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8669 states to 8669 states and 12442 transitions. [2018-12-09 11:31:12,072 INFO L78 Accepts]: Start accepts. Automaton has 8669 states and 12442 transitions. Word has length 46 [2018-12-09 11:31:12,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:12,072 INFO L480 AbstractCegarLoop]: Abstraction has 8669 states and 12442 transitions. [2018-12-09 11:31:12,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 11:31:12,072 INFO L276 IsEmpty]: Start isEmpty. Operand 8669 states and 12442 transitions. [2018-12-09 11:31:12,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-12-09 11:31:12,073 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:12,073 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:12,073 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:12,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:12,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1310627277, now seen corresponding path program 4 times [2018-12-09 11:31:12,074 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:12,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:12,074 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:31:12,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:12,074 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:12,121 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:12,121 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:12,121 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:12,122 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:12,122 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:12,122 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:12,122 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:12,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:12,128 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 11:31:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:12,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:12,138 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:12,138 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:12,170 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:12,185 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:12,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2018-12-09 11:31:12,185 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:12,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 11:31:12,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 11:31:12,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-12-09 11:31:12,186 INFO L87 Difference]: Start difference. First operand 8669 states and 12442 transitions. Second operand 7 states. [2018-12-09 11:31:12,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:12,315 INFO L93 Difference]: Finished difference Result 13316 states and 19433 transitions. [2018-12-09 11:31:12,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 11:31:12,315 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2018-12-09 11:31:12,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:12,323 INFO L225 Difference]: With dead ends: 13316 [2018-12-09 11:31:12,323 INFO L226 Difference]: Without dead ends: 13314 [2018-12-09 11:31:12,325 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-12-09 11:31:12,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13314 states. [2018-12-09 11:31:12,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13314 to 10971. [2018-12-09 11:31:12,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10971 states. [2018-12-09 11:31:12,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10971 states to 10971 states and 15661 transitions. [2018-12-09 11:31:12,457 INFO L78 Accepts]: Start accepts. Automaton has 10971 states and 15661 transitions. Word has length 49 [2018-12-09 11:31:12,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:12,457 INFO L480 AbstractCegarLoop]: Abstraction has 10971 states and 15661 transitions. [2018-12-09 11:31:12,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 11:31:12,457 INFO L276 IsEmpty]: Start isEmpty. Operand 10971 states and 15661 transitions. [2018-12-09 11:31:12,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-12-09 11:31:12,459 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:12,459 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:12,459 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:12,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:12,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1711194378, now seen corresponding path program 6 times [2018-12-09 11:31:12,459 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:12,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:12,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:12,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:12,460 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:12,508 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:12,508 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:12,508 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:12,508 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:12,509 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:12,509 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:12,509 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:12,517 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 11:31:12,517 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-09 11:31:12,525 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 11:31:12,525 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:31:12,526 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:12,529 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:12,529 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:12,585 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:12,599 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:12,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2018-12-09 11:31:12,600 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:12,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 11:31:12,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 11:31:12,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-12-09 11:31:12,600 INFO L87 Difference]: Start difference. First operand 10971 states and 15661 transitions. Second operand 9 states. [2018-12-09 11:31:12,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:12,734 INFO L93 Difference]: Finished difference Result 15626 states and 22669 transitions. [2018-12-09 11:31:12,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 11:31:12,734 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2018-12-09 11:31:12,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:12,744 INFO L225 Difference]: With dead ends: 15626 [2018-12-09 11:31:12,744 INFO L226 Difference]: Without dead ends: 15624 [2018-12-09 11:31:12,748 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-12-09 11:31:12,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15624 states. [2018-12-09 11:31:12,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15624 to 13095. [2018-12-09 11:31:12,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13095 states. [2018-12-09 11:31:12,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13095 states to 13095 states and 18613 transitions. [2018-12-09 11:31:12,907 INFO L78 Accepts]: Start accepts. Automaton has 13095 states and 18613 transitions. Word has length 53 [2018-12-09 11:31:12,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:12,907 INFO L480 AbstractCegarLoop]: Abstraction has 13095 states and 18613 transitions. [2018-12-09 11:31:12,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 11:31:12,907 INFO L276 IsEmpty]: Start isEmpty. Operand 13095 states and 18613 transitions. [2018-12-09 11:31:12,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-12-09 11:31:12,908 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:12,908 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:12,908 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:12,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:12,909 INFO L82 PathProgramCache]: Analyzing trace with hash -434547425, now seen corresponding path program 5 times [2018-12-09 11:31:12,909 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:12,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:12,909 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:31:12,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:12,909 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:12,954 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:12,954 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:12,954 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:12,954 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:12,954 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:12,954 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:12,954 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:12,962 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 11:31:12,962 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 11:31:12,971 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-12-09 11:31:12,971 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:31:12,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:12,975 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:12,975 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:13,026 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:13,041 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:13,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2018-12-09 11:31:13,041 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:13,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 11:31:13,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 11:31:13,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-12-09 11:31:13,042 INFO L87 Difference]: Start difference. First operand 13095 states and 18613 transitions. Second operand 8 states. [2018-12-09 11:31:13,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:13,252 INFO L93 Difference]: Finished difference Result 19894 states and 28525 transitions. [2018-12-09 11:31:13,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 11:31:13,253 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2018-12-09 11:31:13,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:13,265 INFO L225 Difference]: With dead ends: 19894 [2018-12-09 11:31:13,266 INFO L226 Difference]: Without dead ends: 19893 [2018-12-09 11:31:13,269 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-12-09 11:31:13,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19893 states. [2018-12-09 11:31:13,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19893 to 14133. [2018-12-09 11:31:13,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14133 states. [2018-12-09 11:31:13,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14133 states to 14133 states and 20101 transitions. [2018-12-09 11:31:13,456 INFO L78 Accepts]: Start accepts. Automaton has 14133 states and 20101 transitions. Word has length 53 [2018-12-09 11:31:13,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:13,456 INFO L480 AbstractCegarLoop]: Abstraction has 14133 states and 20101 transitions. [2018-12-09 11:31:13,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 11:31:13,457 INFO L276 IsEmpty]: Start isEmpty. Operand 14133 states and 20101 transitions. [2018-12-09 11:31:13,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-12-09 11:31:13,458 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:13,458 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:13,458 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:13,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:13,458 INFO L82 PathProgramCache]: Analyzing trace with hash 941207746, now seen corresponding path program 4 times [2018-12-09 11:31:13,458 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:13,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:13,458 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:31:13,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:13,459 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:13,501 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:13,502 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:13,502 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:13,502 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:13,502 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:13,502 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:13,502 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:13,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:13,510 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 11:31:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:13,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:13,521 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:13,521 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:13,551 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:13,565 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:13,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2018-12-09 11:31:13,565 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:13,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 11:31:13,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 11:31:13,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-12-09 11:31:13,566 INFO L87 Difference]: Start difference. First operand 14133 states and 20101 transitions. Second operand 7 states. [2018-12-09 11:31:13,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:13,733 INFO L93 Difference]: Finished difference Result 20778 states and 29841 transitions. [2018-12-09 11:31:13,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 11:31:13,733 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2018-12-09 11:31:13,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:13,747 INFO L225 Difference]: With dead ends: 20778 [2018-12-09 11:31:13,747 INFO L226 Difference]: Without dead ends: 20777 [2018-12-09 11:31:13,752 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-12-09 11:31:13,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20777 states. [2018-12-09 11:31:13,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20777 to 15385. [2018-12-09 11:31:13,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15385 states. [2018-12-09 11:31:13,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15385 states to 15385 states and 21885 transitions. [2018-12-09 11:31:13,967 INFO L78 Accepts]: Start accepts. Automaton has 15385 states and 21885 transitions. Word has length 55 [2018-12-09 11:31:13,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:13,967 INFO L480 AbstractCegarLoop]: Abstraction has 15385 states and 21885 transitions. [2018-12-09 11:31:13,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 11:31:13,968 INFO L276 IsEmpty]: Start isEmpty. Operand 15385 states and 21885 transitions. [2018-12-09 11:31:13,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-12-09 11:31:13,969 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:13,969 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:13,969 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:13,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:13,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1897860808, now seen corresponding path program 5 times [2018-12-09 11:31:13,969 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:13,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:13,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:13,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:13,970 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:14,028 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:14,028 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:14,028 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:14,028 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:14,028 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:14,028 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:14,028 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:14,035 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 11:31:14,035 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 11:31:14,047 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-12-09 11:31:14,047 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:31:14,048 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:14,051 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:14,051 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:14,111 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:14,125 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:14,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2018-12-09 11:31:14,125 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:14,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 11:31:14,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 11:31:14,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-12-09 11:31:14,126 INFO L87 Difference]: Start difference. First operand 15385 states and 21885 transitions. Second operand 8 states. [2018-12-09 11:31:14,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:14,311 INFO L93 Difference]: Finished difference Result 22701 states and 32845 transitions. [2018-12-09 11:31:14,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 11:31:14,312 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2018-12-09 11:31:14,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:14,327 INFO L225 Difference]: With dead ends: 22701 [2018-12-09 11:31:14,327 INFO L226 Difference]: Without dead ends: 22699 [2018-12-09 11:31:14,331 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-12-09 11:31:14,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22699 states. [2018-12-09 11:31:14,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22699 to 18977. [2018-12-09 11:31:14,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18977 states. [2018-12-09 11:31:14,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18977 states to 18977 states and 26868 transitions. [2018-12-09 11:31:14,578 INFO L78 Accepts]: Start accepts. Automaton has 18977 states and 26868 transitions. Word has length 58 [2018-12-09 11:31:14,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:14,579 INFO L480 AbstractCegarLoop]: Abstraction has 18977 states and 26868 transitions. [2018-12-09 11:31:14,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 11:31:14,579 INFO L276 IsEmpty]: Start isEmpty. Operand 18977 states and 26868 transitions. [2018-12-09 11:31:14,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-12-09 11:31:14,580 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:14,580 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:14,580 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:14,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:14,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1695921494, now seen corresponding path program 7 times [2018-12-09 11:31:14,580 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:14,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:14,581 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:31:14,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:14,581 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:14,635 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:14,635 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:14,635 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:14,635 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:14,635 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:14,635 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:14,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:14,643 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 11:31:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:14,655 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:14,658 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:14,658 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:14,720 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:14,735 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:14,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2018-12-09 11:31:14,735 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:14,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 11:31:14,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 11:31:14,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-12-09 11:31:14,736 INFO L87 Difference]: Start difference. First operand 18977 states and 26868 transitions. Second operand 10 states. [2018-12-09 11:31:14,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:14,951 INFO L93 Difference]: Finished difference Result 26255 states and 37782 transitions. [2018-12-09 11:31:14,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-09 11:31:14,951 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 60 [2018-12-09 11:31:14,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:14,972 INFO L225 Difference]: With dead ends: 26255 [2018-12-09 11:31:14,972 INFO L226 Difference]: Without dead ends: 26253 [2018-12-09 11:31:14,977 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-12-09 11:31:14,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26253 states. [2018-12-09 11:31:15,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26253 to 22315. [2018-12-09 11:31:15,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22315 states. [2018-12-09 11:31:15,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22315 states to 22315 states and 31477 transitions. [2018-12-09 11:31:15,310 INFO L78 Accepts]: Start accepts. Automaton has 22315 states and 31477 transitions. Word has length 60 [2018-12-09 11:31:15,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:15,310 INFO L480 AbstractCegarLoop]: Abstraction has 22315 states and 31477 transitions. [2018-12-09 11:31:15,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 11:31:15,310 INFO L276 IsEmpty]: Start isEmpty. Operand 22315 states and 31477 transitions. [2018-12-09 11:31:15,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-12-09 11:31:15,312 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:15,312 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:15,312 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:15,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:15,312 INFO L82 PathProgramCache]: Analyzing trace with hash 2090391817, now seen corresponding path program 6 times [2018-12-09 11:31:15,312 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:15,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:15,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:15,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:15,313 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:15,362 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:15,363 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:15,363 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:15,363 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:15,363 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:15,363 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:15,363 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:15,371 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 11:31:15,372 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-09 11:31:15,380 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 11:31:15,380 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:31:15,381 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:15,385 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:15,385 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:15,430 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:15,444 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:15,444 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2018-12-09 11:31:15,444 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:15,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 11:31:15,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 11:31:15,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-12-09 11:31:15,445 INFO L87 Difference]: Start difference. First operand 22315 states and 31477 transitions. Second operand 9 states. [2018-12-09 11:31:15,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:15,693 INFO L93 Difference]: Finished difference Result 32959 states and 46936 transitions. [2018-12-09 11:31:15,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 11:31:15,694 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2018-12-09 11:31:15,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:15,718 INFO L225 Difference]: With dead ends: 32959 [2018-12-09 11:31:15,718 INFO L226 Difference]: Without dead ends: 32958 [2018-12-09 11:31:15,723 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-12-09 11:31:15,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32958 states. [2018-12-09 11:31:16,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32958 to 23709. [2018-12-09 11:31:16,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23709 states. [2018-12-09 11:31:16,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23709 states to 23709 states and 33466 transitions. [2018-12-09 11:31:16,052 INFO L78 Accepts]: Start accepts. Automaton has 23709 states and 33466 transitions. Word has length 61 [2018-12-09 11:31:16,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:16,053 INFO L480 AbstractCegarLoop]: Abstraction has 23709 states and 33466 transitions. [2018-12-09 11:31:16,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 11:31:16,053 INFO L276 IsEmpty]: Start isEmpty. Operand 23709 states and 33466 transitions. [2018-12-09 11:31:16,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-12-09 11:31:16,054 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:16,054 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:16,055 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:16,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:16,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1521886379, now seen corresponding path program 5 times [2018-12-09 11:31:16,055 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:16,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:16,055 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:31:16,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:16,055 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:16,095 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:16,096 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:16,096 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:16,096 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:16,096 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:16,096 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:16,096 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:16,103 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 11:31:16,103 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 11:31:16,113 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-12-09 11:31:16,113 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:31:16,114 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:16,157 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:16,157 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:16,205 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:16,219 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:16,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2018-12-09 11:31:16,219 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:16,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 11:31:16,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 11:31:16,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-12-09 11:31:16,220 INFO L87 Difference]: Start difference. First operand 23709 states and 33466 transitions. Second operand 8 states. [2018-12-09 11:31:16,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:16,487 INFO L93 Difference]: Finished difference Result 33673 states and 48022 transitions. [2018-12-09 11:31:16,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 11:31:16,487 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2018-12-09 11:31:16,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:16,513 INFO L225 Difference]: With dead ends: 33673 [2018-12-09 11:31:16,513 INFO L226 Difference]: Without dead ends: 33672 [2018-12-09 11:31:16,518 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-12-09 11:31:16,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33672 states. [2018-12-09 11:31:16,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33672 to 25273. [2018-12-09 11:31:16,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25273 states. [2018-12-09 11:31:16,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25273 states to 25273 states and 35688 transitions. [2018-12-09 11:31:16,866 INFO L78 Accepts]: Start accepts. Automaton has 25273 states and 35688 transitions. Word has length 65 [2018-12-09 11:31:16,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:16,866 INFO L480 AbstractCegarLoop]: Abstraction has 25273 states and 35688 transitions. [2018-12-09 11:31:16,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 11:31:16,866 INFO L276 IsEmpty]: Start isEmpty. Operand 25273 states and 35688 transitions. [2018-12-09 11:31:16,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-12-09 11:31:16,868 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:16,868 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:16,868 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:16,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:16,869 INFO L82 PathProgramCache]: Analyzing trace with hash -690121846, now seen corresponding path program 8 times [2018-12-09 11:31:16,869 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:16,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:16,869 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:31:16,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:16,869 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:16,922 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:16,923 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:16,923 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:16,923 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:16,923 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:16,923 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:16,923 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:16,934 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 11:31:16,935 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 11:31:16,949 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-12-09 11:31:16,949 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:31:16,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:16,956 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:16,956 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:17,032 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:17,047 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:17,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2018-12-09 11:31:17,047 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:17,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-09 11:31:17,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-09 11:31:17,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-12-09 11:31:17,047 INFO L87 Difference]: Start difference. First operand 25273 states and 35688 transitions. Second operand 11 states. [2018-12-09 11:31:17,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:17,337 INFO L93 Difference]: Finished difference Result 34134 states and 48972 transitions. [2018-12-09 11:31:17,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 11:31:17,337 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2018-12-09 11:31:17,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:17,364 INFO L225 Difference]: With dead ends: 34134 [2018-12-09 11:31:17,364 INFO L226 Difference]: Without dead ends: 34132 [2018-12-09 11:31:17,370 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-12-09 11:31:17,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34132 states. [2018-12-09 11:31:17,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34132 to 29349. [2018-12-09 11:31:17,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29349 states. [2018-12-09 11:31:17,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29349 states to 29349 states and 41310 transitions. [2018-12-09 11:31:17,806 INFO L78 Accepts]: Start accepts. Automaton has 29349 states and 41310 transitions. Word has length 67 [2018-12-09 11:31:17,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:17,806 INFO L480 AbstractCegarLoop]: Abstraction has 29349 states and 41310 transitions. [2018-12-09 11:31:17,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-09 11:31:17,807 INFO L276 IsEmpty]: Start isEmpty. Operand 29349 states and 41310 transitions. [2018-12-09 11:31:17,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-12-09 11:31:17,808 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:17,808 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:17,808 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:17,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:17,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1044856365, now seen corresponding path program 6 times [2018-12-09 11:31:17,809 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:17,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:17,809 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:31:17,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:17,809 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:17,844 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:17,845 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:17,845 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:17,845 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:17,845 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:17,845 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:17,845 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:17,851 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 11:31:17,851 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-09 11:31:17,860 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 11:31:17,860 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:31:17,861 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:17,864 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:17,864 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:17,906 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:17,920 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:17,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2018-12-09 11:31:17,920 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:17,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 11:31:17,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 11:31:17,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-12-09 11:31:17,921 INFO L87 Difference]: Start difference. First operand 29349 states and 41310 transitions. Second operand 9 states. [2018-12-09 11:31:18,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:18,230 INFO L93 Difference]: Finished difference Result 41884 states and 59975 transitions. [2018-12-09 11:31:18,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 11:31:18,230 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2018-12-09 11:31:18,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:18,262 INFO L225 Difference]: With dead ends: 41884 [2018-12-09 11:31:18,262 INFO L226 Difference]: Without dead ends: 41882 [2018-12-09 11:31:18,270 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-12-09 11:31:18,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41882 states. [2018-12-09 11:31:18,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41882 to 35469. [2018-12-09 11:31:18,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35469 states. [2018-12-09 11:31:18,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35469 states to 35469 states and 49722 transitions. [2018-12-09 11:31:18,792 INFO L78 Accepts]: Start accepts. Automaton has 35469 states and 49722 transitions. Word has length 67 [2018-12-09 11:31:18,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:18,792 INFO L480 AbstractCegarLoop]: Abstraction has 35469 states and 49722 transitions. [2018-12-09 11:31:18,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 11:31:18,792 INFO L276 IsEmpty]: Start isEmpty. Operand 35469 states and 49722 transitions. [2018-12-09 11:31:18,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-12-09 11:31:18,795 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:18,795 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:18,795 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:18,795 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:18,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1351429389, now seen corresponding path program 7 times [2018-12-09 11:31:18,795 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:18,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:18,796 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:31:18,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:18,796 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:18,844 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:18,844 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:18,844 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:18,844 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:18,844 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:18,844 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:18,844 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:18,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:18,851 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 11:31:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:18,861 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:18,865 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:18,865 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:18,922 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:18,936 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:18,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2018-12-09 11:31:18,936 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:18,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 11:31:18,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 11:31:18,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-12-09 11:31:18,937 INFO L87 Difference]: Start difference. First operand 35469 states and 49722 transitions. Second operand 10 states. [2018-12-09 11:31:19,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:19,316 INFO L93 Difference]: Finished difference Result 51133 states and 72401 transitions. [2018-12-09 11:31:19,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-09 11:31:19,317 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2018-12-09 11:31:19,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:19,359 INFO L225 Difference]: With dead ends: 51133 [2018-12-09 11:31:19,359 INFO L226 Difference]: Without dead ends: 51132 [2018-12-09 11:31:19,368 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-12-09 11:31:19,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51132 states. [2018-12-09 11:31:19,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51132 to 37265. [2018-12-09 11:31:19,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37265 states. [2018-12-09 11:31:19,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37265 states to 37265 states and 52275 transitions. [2018-12-09 11:31:19,909 INFO L78 Accepts]: Start accepts. Automaton has 37265 states and 52275 transitions. Word has length 69 [2018-12-09 11:31:19,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:19,909 INFO L480 AbstractCegarLoop]: Abstraction has 37265 states and 52275 transitions. [2018-12-09 11:31:19,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 11:31:19,909 INFO L276 IsEmpty]: Start isEmpty. Operand 37265 states and 52275 transitions. [2018-12-09 11:31:19,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-12-09 11:31:19,912 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:19,912 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:19,912 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:19,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:19,912 INFO L82 PathProgramCache]: Analyzing trace with hash -2049109290, now seen corresponding path program 9 times [2018-12-09 11:31:19,912 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:19,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:19,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:19,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:19,913 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:19,971 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:19,971 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:19,971 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:19,971 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:19,971 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:19,971 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:19,972 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:19,978 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 11:31:19,978 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-09 11:31:19,989 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 11:31:19,989 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:31:19,990 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:19,994 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:19,994 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:20,072 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:20,086 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:20,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2018-12-09 11:31:20,086 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:20,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-09 11:31:20,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-09 11:31:20,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-12-09 11:31:20,087 INFO L87 Difference]: Start difference. First operand 37265 states and 52275 transitions. Second operand 12 states. [2018-12-09 11:31:20,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:20,567 INFO L93 Difference]: Finished difference Result 49303 states and 70258 transitions. [2018-12-09 11:31:20,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 11:31:20,567 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 74 [2018-12-09 11:31:20,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:20,605 INFO L225 Difference]: With dead ends: 49303 [2018-12-09 11:31:20,606 INFO L226 Difference]: Without dead ends: 49301 [2018-12-09 11:31:20,612 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-12-09 11:31:20,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49301 states. [2018-12-09 11:31:21,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49301 to 42817. [2018-12-09 11:31:21,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42817 states. [2018-12-09 11:31:21,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42817 states to 42817 states and 59893 transitions. [2018-12-09 11:31:21,169 INFO L78 Accepts]: Start accepts. Automaton has 42817 states and 59893 transitions. Word has length 74 [2018-12-09 11:31:21,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:21,169 INFO L480 AbstractCegarLoop]: Abstraction has 42817 states and 59893 transitions. [2018-12-09 11:31:21,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-09 11:31:21,169 INFO L276 IsEmpty]: Start isEmpty. Operand 42817 states and 59893 transitions. [2018-12-09 11:31:21,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-12-09 11:31:21,172 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:21,172 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:21,172 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:21,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:21,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1528834600, now seen corresponding path program 6 times [2018-12-09 11:31:21,172 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:21,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:21,173 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:31:21,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:21,173 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:21,226 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:21,226 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:21,226 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:21,226 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:21,226 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:21,226 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:21,226 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:21,232 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 11:31:21,232 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-09 11:31:21,240 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 11:31:21,241 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:31:21,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:21,246 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:21,247 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:21,301 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:21,315 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:21,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2018-12-09 11:31:21,315 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:21,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 11:31:21,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 11:31:21,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-12-09 11:31:21,315 INFO L87 Difference]: Start difference. First operand 42817 states and 59893 transitions. Second operand 9 states. [2018-12-09 11:31:21,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:21,743 INFO L93 Difference]: Finished difference Result 59106 states and 83567 transitions. [2018-12-09 11:31:21,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 11:31:21,743 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2018-12-09 11:31:21,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:21,791 INFO L225 Difference]: With dead ends: 59106 [2018-12-09 11:31:21,792 INFO L226 Difference]: Without dead ends: 59105 [2018-12-09 11:31:21,802 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-12-09 11:31:21,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59105 states. [2018-12-09 11:31:22,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59105 to 45009. [2018-12-09 11:31:22,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45009 states. [2018-12-09 11:31:22,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45009 states to 45009 states and 62991 transitions. [2018-12-09 11:31:22,474 INFO L78 Accepts]: Start accepts. Automaton has 45009 states and 62991 transitions. Word has length 75 [2018-12-09 11:31:22,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:22,474 INFO L480 AbstractCegarLoop]: Abstraction has 45009 states and 62991 transitions. [2018-12-09 11:31:22,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 11:31:22,474 INFO L276 IsEmpty]: Start isEmpty. Operand 45009 states and 62991 transitions. [2018-12-09 11:31:22,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-12-09 11:31:22,477 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:22,477 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:22,477 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:22,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:22,477 INFO L82 PathProgramCache]: Analyzing trace with hash -427799768, now seen corresponding path program 7 times [2018-12-09 11:31:22,477 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:22,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:22,478 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:31:22,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:22,478 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:22,517 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:22,517 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:22,517 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:22,517 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:22,517 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:22,517 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:22,517 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:22,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:22,525 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 11:31:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:22,535 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:22,539 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:22,539 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:22,606 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:22,621 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:22,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2018-12-09 11:31:22,621 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:22,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 11:31:22,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 11:31:22,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-12-09 11:31:22,621 INFO L87 Difference]: Start difference. First operand 45009 states and 62991 transitions. Second operand 10 states. [2018-12-09 11:31:23,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:23,095 INFO L93 Difference]: Finished difference Result 62469 states and 88924 transitions. [2018-12-09 11:31:23,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-09 11:31:23,095 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 76 [2018-12-09 11:31:23,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:23,148 INFO L225 Difference]: With dead ends: 62469 [2018-12-09 11:31:23,148 INFO L226 Difference]: Without dead ends: 62467 [2018-12-09 11:31:23,160 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-12-09 11:31:23,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62467 states. [2018-12-09 11:31:23,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62467 to 53493. [2018-12-09 11:31:23,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53493 states. [2018-12-09 11:31:24,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53493 states to 53493 states and 74602 transitions. [2018-12-09 11:31:24,065 INFO L78 Accepts]: Start accepts. Automaton has 53493 states and 74602 transitions. Word has length 76 [2018-12-09 11:31:24,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:24,065 INFO L480 AbstractCegarLoop]: Abstraction has 53493 states and 74602 transitions. [2018-12-09 11:31:24,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 11:31:24,065 INFO L276 IsEmpty]: Start isEmpty. Operand 53493 states and 74602 transitions. [2018-12-09 11:31:24,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-12-09 11:31:24,068 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:24,068 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:24,068 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:24,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:24,069 INFO L82 PathProgramCache]: Analyzing trace with hash 265372381, now seen corresponding path program 8 times [2018-12-09 11:31:24,069 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:24,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:24,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:24,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:24,069 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:24,112 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:24,112 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:24,112 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:24,112 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:24,112 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:24,112 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:24,112 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:24,120 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 11:31:24,120 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 11:31:24,133 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-12-09 11:31:24,133 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:31:24,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:24,140 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:24,140 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:24,223 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:24,237 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:24,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2018-12-09 11:31:24,238 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:24,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-09 11:31:24,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-09 11:31:24,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-12-09 11:31:24,238 INFO L87 Difference]: Start difference. First operand 53493 states and 74602 transitions. Second operand 11 states. [2018-12-09 11:31:24,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:24,792 INFO L93 Difference]: Finished difference Result 75502 states and 106384 transitions. [2018-12-09 11:31:24,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 11:31:24,793 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 77 [2018-12-09 11:31:24,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:24,857 INFO L225 Difference]: With dead ends: 75502 [2018-12-09 11:31:24,857 INFO L226 Difference]: Without dead ends: 75501 [2018-12-09 11:31:24,872 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-12-09 11:31:24,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75501 states. [2018-12-09 11:31:25,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75501 to 55737. [2018-12-09 11:31:25,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55737 states. [2018-12-09 11:31:25,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55737 states to 55737 states and 77782 transitions. [2018-12-09 11:31:25,726 INFO L78 Accepts]: Start accepts. Automaton has 55737 states and 77782 transitions. Word has length 77 [2018-12-09 11:31:25,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:25,727 INFO L480 AbstractCegarLoop]: Abstraction has 55737 states and 77782 transitions. [2018-12-09 11:31:25,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-09 11:31:25,727 INFO L276 IsEmpty]: Start isEmpty. Operand 55737 states and 77782 transitions. [2018-12-09 11:31:25,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-12-09 11:31:25,730 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:25,730 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:25,730 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:25,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:25,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1444546058, now seen corresponding path program 10 times [2018-12-09 11:31:25,731 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:25,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:25,731 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:31:25,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:25,731 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:25,800 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:25,800 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:25,800 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:25,800 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:25,800 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:25,800 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:25,800 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:25,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:25,806 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 11:31:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:25,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:25,822 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:25,822 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:25,913 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:25,927 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:25,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2018-12-09 11:31:25,927 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:25,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-09 11:31:25,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-09 11:31:25,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-12-09 11:31:25,927 INFO L87 Difference]: Start difference. First operand 55737 states and 77782 transitions. Second operand 13 states. [2018-12-09 11:31:26,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:26,546 INFO L93 Difference]: Finished difference Result 72432 states and 102654 transitions. [2018-12-09 11:31:26,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-09 11:31:26,547 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2018-12-09 11:31:26,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:26,612 INFO L225 Difference]: With dead ends: 72432 [2018-12-09 11:31:26,612 INFO L226 Difference]: Without dead ends: 72430 [2018-12-09 11:31:26,625 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-12-09 11:31:26,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72430 states. [2018-12-09 11:31:27,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72430 to 63455. [2018-12-09 11:31:27,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63455 states. [2018-12-09 11:31:27,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63455 states to 63455 states and 88331 transitions. [2018-12-09 11:31:27,506 INFO L78 Accepts]: Start accepts. Automaton has 63455 states and 88331 transitions. Word has length 81 [2018-12-09 11:31:27,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:27,506 INFO L480 AbstractCegarLoop]: Abstraction has 63455 states and 88331 transitions. [2018-12-09 11:31:27,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-09 11:31:27,507 INFO L276 IsEmpty]: Start isEmpty. Operand 63455 states and 88331 transitions. [2018-12-09 11:31:27,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-12-09 11:31:27,510 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:27,511 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:27,511 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:27,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:27,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1692281031, now seen corresponding path program 9 times [2018-12-09 11:31:27,511 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:27,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:27,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:27,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:27,512 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:27,563 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:27,563 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:27,563 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:27,563 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:27,563 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:27,563 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:27,563 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:27,572 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 11:31:27,572 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-09 11:31:27,583 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 11:31:27,583 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:31:27,584 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:27,590 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:27,590 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:27,689 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:27,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2018-12-09 11:31:27,690 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:27,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-09 11:31:27,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-09 11:31:27,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-12-09 11:31:27,690 INFO L87 Difference]: Start difference. First operand 63455 states and 88331 transitions. Second operand 12 states. [2018-12-09 11:31:28,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:28,327 INFO L93 Difference]: Finished difference Result 87915 states and 123650 transitions. [2018-12-09 11:31:28,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 11:31:28,327 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 85 [2018-12-09 11:31:28,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:28,404 INFO L225 Difference]: With dead ends: 87915 [2018-12-09 11:31:28,405 INFO L226 Difference]: Without dead ends: 87914 [2018-12-09 11:31:28,420 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-12-09 11:31:28,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87914 states. [2018-12-09 11:31:29,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87914 to 65699. [2018-12-09 11:31:29,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65699 states. [2018-12-09 11:31:29,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65699 states to 65699 states and 91511 transitions. [2018-12-09 11:31:29,547 INFO L78 Accepts]: Start accepts. Automaton has 65699 states and 91511 transitions. Word has length 85 [2018-12-09 11:31:29,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:29,547 INFO L480 AbstractCegarLoop]: Abstraction has 65699 states and 91511 transitions. [2018-12-09 11:31:29,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-09 11:31:29,547 INFO L276 IsEmpty]: Start isEmpty. Operand 65699 states and 91511 transitions. [2018-12-09 11:31:29,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-12-09 11:31:29,551 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:29,551 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:29,551 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:29,551 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:29,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1685753485, now seen corresponding path program 8 times [2018-12-09 11:31:29,552 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:29,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:29,552 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:31:29,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:29,552 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:29,598 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:29,598 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:29,598 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:29,598 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:29,598 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:29,598 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:29,598 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:29,604 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 11:31:29,604 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 11:31:29,617 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-12-09 11:31:29,617 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:31:29,618 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:29,624 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:29,624 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:29,712 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:29,726 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:29,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2018-12-09 11:31:29,727 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:29,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-09 11:31:29,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-09 11:31:29,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-12-09 11:31:29,727 INFO L87 Difference]: Start difference. First operand 65699 states and 91511 transitions. Second operand 11 states. [2018-12-09 11:31:30,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:30,382 INFO L93 Difference]: Finished difference Result 88656 states and 125565 transitions. [2018-12-09 11:31:30,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 11:31:30,383 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 85 [2018-12-09 11:31:30,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:30,459 INFO L225 Difference]: With dead ends: 88656 [2018-12-09 11:31:30,459 INFO L226 Difference]: Without dead ends: 88654 [2018-12-09 11:31:30,473 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-12-09 11:31:30,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88654 states. [2018-12-09 11:31:31,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88654 to 76293. [2018-12-09 11:31:31,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76293 states. [2018-12-09 11:31:31,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76293 states to 76293 states and 105928 transitions. [2018-12-09 11:31:31,550 INFO L78 Accepts]: Start accepts. Automaton has 76293 states and 105928 transitions. Word has length 85 [2018-12-09 11:31:31,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:31,551 INFO L480 AbstractCegarLoop]: Abstraction has 76293 states and 105928 transitions. [2018-12-09 11:31:31,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-09 11:31:31,551 INFO L276 IsEmpty]: Start isEmpty. Operand 76293 states and 105928 transitions. [2018-12-09 11:31:31,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-12-09 11:31:31,555 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:31,555 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:31,555 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:31,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:31,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1536406213, now seen corresponding path program 7 times [2018-12-09 11:31:31,555 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:31,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:31,556 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:31:31,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:31,556 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:31,675 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:31,675 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:31,675 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:31,675 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:31,675 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:31,676 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:31,676 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:31,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:31,681 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 11:31:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:31,691 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:31,697 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:31,697 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:31,761 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:31,775 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:31,775 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2018-12-09 11:31:31,775 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:31,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 11:31:31,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 11:31:31,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-12-09 11:31:31,776 INFO L87 Difference]: Start difference. First operand 76293 states and 105928 transitions. Second operand 10 states. [2018-12-09 11:31:32,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:32,587 INFO L93 Difference]: Finished difference Result 109927 states and 154225 transitions. [2018-12-09 11:31:32,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-09 11:31:32,587 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2018-12-09 11:31:32,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:32,692 INFO L225 Difference]: With dead ends: 109927 [2018-12-09 11:31:32,692 INFO L226 Difference]: Without dead ends: 109926 [2018-12-09 11:31:32,711 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-12-09 11:31:32,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109926 states. [2018-12-09 11:31:33,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109926 to 80157. [2018-12-09 11:31:33,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80157 states. [2018-12-09 11:31:33,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80157 states to 80157 states and 111367 transitions. [2018-12-09 11:31:33,970 INFO L78 Accepts]: Start accepts. Automaton has 80157 states and 111367 transitions. Word has length 85 [2018-12-09 11:31:33,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:33,970 INFO L480 AbstractCegarLoop]: Abstraction has 80157 states and 111367 transitions. [2018-12-09 11:31:33,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 11:31:33,970 INFO L276 IsEmpty]: Start isEmpty. Operand 80157 states and 111367 transitions. [2018-12-09 11:31:33,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-12-09 11:31:33,974 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:33,975 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:33,975 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:33,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:33,975 INFO L82 PathProgramCache]: Analyzing trace with hash -508374954, now seen corresponding path program 11 times [2018-12-09 11:31:33,975 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:33,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:33,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:33,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:33,976 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:34,031 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 451 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:34,031 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:34,031 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:34,031 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:34,032 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:34,032 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:34,032 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:34,039 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 11:31:34,039 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 11:31:34,055 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-12-09 11:31:34,055 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:31:34,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:34,062 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 451 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:34,062 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:34,176 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 451 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:34,191 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:34,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2018-12-09 11:31:34,191 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:34,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-09 11:31:34,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-09 11:31:34,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-12-09 11:31:34,191 INFO L87 Difference]: Start difference. First operand 80157 states and 111367 transitions. Second operand 14 states. [2018-12-09 11:31:35,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:35,008 INFO L93 Difference]: Finished difference Result 102547 states and 144645 transitions. [2018-12-09 11:31:35,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-09 11:31:35,008 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 88 [2018-12-09 11:31:35,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:35,115 INFO L225 Difference]: With dead ends: 102547 [2018-12-09 11:31:35,115 INFO L226 Difference]: Without dead ends: 102545 [2018-12-09 11:31:35,135 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-12-09 11:31:35,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102545 states. [2018-12-09 11:31:36,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102545 to 90527. [2018-12-09 11:31:36,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90527 states. [2018-12-09 11:31:36,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90527 states to 90527 states and 125495 transitions. [2018-12-09 11:31:36,468 INFO L78 Accepts]: Start accepts. Automaton has 90527 states and 125495 transitions. Word has length 88 [2018-12-09 11:31:36,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:36,468 INFO L480 AbstractCegarLoop]: Abstraction has 90527 states and 125495 transitions. [2018-12-09 11:31:36,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-09 11:31:36,468 INFO L276 IsEmpty]: Start isEmpty. Operand 90527 states and 125495 transitions. [2018-12-09 11:31:36,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-12-09 11:31:36,473 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:36,473 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:36,473 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:36,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:36,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1413249871, now seen corresponding path program 10 times [2018-12-09 11:31:36,474 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:36,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:36,474 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:31:36,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:36,474 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:36,546 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:36,546 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:36,546 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:36,546 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:36,546 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:36,546 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:36,546 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:36,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:36,552 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 11:31:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:36,565 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:36,572 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:36,572 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:36,673 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:36,687 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:36,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2018-12-09 11:31:36,687 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:36,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-09 11:31:36,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-09 11:31:36,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-12-09 11:31:36,688 INFO L87 Difference]: Start difference. First operand 90527 states and 125495 transitions. Second operand 13 states. [2018-12-09 11:31:37,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:37,632 INFO L93 Difference]: Finished difference Result 123345 states and 172777 transitions. [2018-12-09 11:31:37,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-09 11:31:37,633 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 93 [2018-12-09 11:31:37,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:37,751 INFO L225 Difference]: With dead ends: 123345 [2018-12-09 11:31:37,751 INFO L226 Difference]: Without dead ends: 123344 [2018-12-09 11:31:37,774 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-12-09 11:31:37,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123344 states. [2018-12-09 11:31:39,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123344 to 93265. [2018-12-09 11:31:39,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93265 states. [2018-12-09 11:31:39,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93265 states to 93265 states and 129365 transitions. [2018-12-09 11:31:39,272 INFO L78 Accepts]: Start accepts. Automaton has 93265 states and 129365 transitions. Word has length 93 [2018-12-09 11:31:39,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:39,272 INFO L480 AbstractCegarLoop]: Abstraction has 93265 states and 129365 transitions. [2018-12-09 11:31:39,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-09 11:31:39,272 INFO L276 IsEmpty]: Start isEmpty. Operand 93265 states and 129365 transitions. [2018-12-09 11:31:39,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-12-09 11:31:39,277 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:39,277 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:39,277 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:39,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:39,278 INFO L82 PathProgramCache]: Analyzing trace with hash 879701896, now seen corresponding path program 9 times [2018-12-09 11:31:39,278 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:39,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:39,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:31:39,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:39,278 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:39,331 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:39,331 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:39,331 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:39,332 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:39,332 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:39,332 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:39,332 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:39,337 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 11:31:39,337 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-09 11:31:39,349 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 11:31:39,349 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:31:39,350 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:39,356 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:39,356 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:39,434 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:39,448 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:39,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2018-12-09 11:31:39,448 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:39,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-09 11:31:39,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-09 11:31:39,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-12-09 11:31:39,449 INFO L87 Difference]: Start difference. First operand 93265 states and 129365 transitions. Second operand 12 states. [2018-12-09 11:31:40,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:40,374 INFO L93 Difference]: Finished difference Result 123303 states and 173838 transitions. [2018-12-09 11:31:40,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 11:31:40,374 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2018-12-09 11:31:40,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:40,491 INFO L225 Difference]: With dead ends: 123303 [2018-12-09 11:31:40,492 INFO L226 Difference]: Without dead ends: 123301 [2018-12-09 11:31:40,513 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-12-09 11:31:40,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123301 states. [2018-12-09 11:31:42,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123301 to 107157. [2018-12-09 11:31:42,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107157 states. [2018-12-09 11:31:42,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107157 states to 107157 states and 148218 transitions. [2018-12-09 11:31:42,134 INFO L78 Accepts]: Start accepts. Automaton has 107157 states and 148218 transitions. Word has length 94 [2018-12-09 11:31:42,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:42,135 INFO L480 AbstractCegarLoop]: Abstraction has 107157 states and 148218 transitions. [2018-12-09 11:31:42,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-09 11:31:42,135 INFO L276 IsEmpty]: Start isEmpty. Operand 107157 states and 148218 transitions. [2018-12-09 11:31:42,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-12-09 11:31:42,140 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:42,140 INFO L402 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:42,140 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:42,140 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:42,140 INFO L82 PathProgramCache]: Analyzing trace with hash 526129290, now seen corresponding path program 12 times [2018-12-09 11:31:42,141 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:42,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:42,141 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:31:42,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:42,141 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:42,206 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 517 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-12-09 11:31:42,206 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:31:42,206 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-12-09 11:31:42,206 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:31:42,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-09 11:31:42,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-09 11:31:42,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-12-09 11:31:42,207 INFO L87 Difference]: Start difference. First operand 107157 states and 148218 transitions. Second operand 13 states. [2018-12-09 11:31:42,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:42,827 INFO L93 Difference]: Finished difference Result 125640 states and 173038 transitions. [2018-12-09 11:31:42,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-09 11:31:42,828 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2018-12-09 11:31:42,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:42,829 INFO L225 Difference]: With dead ends: 125640 [2018-12-09 11:31:42,829 INFO L226 Difference]: Without dead ends: 423 [2018-12-09 11:31:42,897 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-12-09 11:31:42,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-12-09 11:31:42,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 226. [2018-12-09 11:31:42,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-12-09 11:31:42,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 264 transitions. [2018-12-09 11:31:42,902 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 264 transitions. Word has length 95 [2018-12-09 11:31:42,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:42,902 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 264 transitions. [2018-12-09 11:31:42,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-09 11:31:42,902 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 264 transitions. [2018-12-09 11:31:42,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-12-09 11:31:42,902 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:42,903 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:42,903 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:42,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:42,903 INFO L82 PathProgramCache]: Analyzing trace with hash 270660750, now seen corresponding path program 8 times [2018-12-09 11:31:42,903 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:42,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:42,903 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:31:42,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:42,903 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:42,948 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:42,948 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:42,948 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:42,948 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:42,949 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:42,949 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:42,949 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/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 [2018-12-09 11:31:42,956 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 11:31:42,956 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 11:31:42,971 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-12-09 11:31:42,971 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:31:42,972 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:42,979 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:42,979 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:43,049 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:43,063 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:43,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2018-12-09 11:31:43,063 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:43,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-09 11:31:43,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-09 11:31:43,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-12-09 11:31:43,064 INFO L87 Difference]: Start difference. First operand 226 states and 264 transitions. Second operand 11 states. [2018-12-09 11:31:43,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:43,088 INFO L93 Difference]: Finished difference Result 247 states and 284 transitions. [2018-12-09 11:31:43,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 11:31:43,089 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 95 [2018-12-09 11:31:43,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:43,089 INFO L225 Difference]: With dead ends: 247 [2018-12-09 11:31:43,089 INFO L226 Difference]: Without dead ends: 106 [2018-12-09 11:31:43,089 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-12-09 11:31:43,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-12-09 11:31:43,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-12-09 11:31:43,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-12-09 11:31:43,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 105 transitions. [2018-12-09 11:31:43,091 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 105 transitions. Word has length 95 [2018-12-09 11:31:43,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:43,091 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 105 transitions. [2018-12-09 11:31:43,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-09 11:31:43,092 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 105 transitions. [2018-12-09 11:31:43,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-12-09 11:31:43,092 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:31:43,092 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2018-12-09 11:31:43,092 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:31:43,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:31:43,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1806118879, now seen corresponding path program 9 times [2018-12-09 11:31:43,092 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:31:43,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:43,093 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:31:43,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:31:43,093 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:31:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:31:43,149 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:43,149 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:43,149 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 11:31:43,150 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 11:31:43,150 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:31:43,150 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:31:43,150 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/bin-2019/utaipan/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 11:31:43,155 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 11:31:43,156 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-09 11:31:43,168 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 11:31:43,169 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:31:43,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:31:43,178 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:43,178 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:31:43,262 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:31:43,276 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 11:31:43,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2018-12-09 11:31:43,276 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 11:31:43,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-09 11:31:43,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-09 11:31:43,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-12-09 11:31:43,276 INFO L87 Difference]: Start difference. First operand 106 states and 105 transitions. Second operand 12 states. [2018-12-09 11:31:43,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:31:43,289 INFO L93 Difference]: Finished difference Result 106 states and 105 transitions. [2018-12-09 11:31:43,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 11:31:43,289 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 105 [2018-12-09 11:31:43,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:31:43,289 INFO L225 Difference]: With dead ends: 106 [2018-12-09 11:31:43,289 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 11:31:43,289 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-12-09 11:31:43,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 11:31:43,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 11:31:43,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 11:31:43,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 11:31:43,290 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 105 [2018-12-09 11:31:43,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:31:43,290 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 11:31:43,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-09 11:31:43,290 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 11:31:43,290 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 11:31:43,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 11:31:43,910 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:43,973 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:43,975 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:44,056 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:44,289 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:44,601 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:44,675 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:44,688 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:44,766 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:44,832 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:44,898 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:44,941 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:45,133 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:45,615 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:45,617 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:45,632 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:45,633 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:45,638 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:45,693 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:45,809 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:45,831 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:45,887 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:45,895 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:45,976 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:46,050 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:46,122 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:46,137 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:46,158 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:46,586 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:47,077 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:47,158 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:47,219 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:47,323 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:47,418 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:48,441 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:48,641 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:48,650 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:50,470 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:50,730 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:50,841 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:51,081 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:51,449 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:51,473 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:51,509 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:51,695 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:53,665 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:54,006 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:54,151 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:55,423 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:55,658 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:56,537 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:56,853 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:56,936 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:57,170 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:58,411 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:58,645 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:58,759 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:58,925 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:59,217 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:31:59,254 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:32:00,046 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:32:00,905 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:32:01,798 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:32:02,119 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:32:03,141 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:32:04,121 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:32:04,206 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:32:05,150 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:32:05,324 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:32:05,636 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:32:06,080 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:32:06,417 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:32:07,193 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:32:08,168 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 11:32:08,245 WARN L180 SmtUtils]: Spent 24.94 s on a formula simplification. DAG size of input: 2594 DAG size of output: 2228 [2018-12-09 11:33:09,958 WARN L180 SmtUtils]: Spent 1.03 m on a formula simplification. DAG size of input: 2065 DAG size of output: 353 [2018-12-09 11:33:09,962 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-09 11:33:09,962 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 11:33:09,963 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 11:33:09,963 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 11:33:09,963 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 11:33:09,963 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 11:33:09,963 INFO L448 ceAbstractionStarter]: For program point L27(lines 27 31) no Hoare annotation was computed. [2018-12-09 11:33:09,963 INFO L448 ceAbstractionStarter]: For program point mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2018-12-09 11:33:09,963 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 13 35) no Hoare annotation was computed. [2018-12-09 11:33:09,963 INFO L448 ceAbstractionStarter]: For program point L23(lines 23 31) no Hoare annotation was computed. [2018-12-09 11:33:09,963 INFO L448 ceAbstractionStarter]: For program point mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2018-12-09 11:33:09,963 INFO L448 ceAbstractionStarter]: For program point L19-2(lines 19 33) no Hoare annotation was computed. [2018-12-09 11:33:09,963 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-12-09 11:33:09,963 INFO L448 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2018-12-09 11:33:09,964 INFO L448 ceAbstractionStarter]: For program point L28-1(line 28) no Hoare annotation was computed. [2018-12-09 11:33:09,964 INFO L448 ceAbstractionStarter]: For program point mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2018-12-09 11:33:09,964 INFO L448 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-12-09 11:33:09,964 INFO L448 ceAbstractionStarter]: For program point L24-1(line 24) no Hoare annotation was computed. [2018-12-09 11:33:09,964 INFO L448 ceAbstractionStarter]: For program point mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2018-12-09 11:33:09,964 INFO L448 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-12-09 11:33:09,964 INFO L448 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-12-09 11:33:09,964 INFO L448 ceAbstractionStarter]: For program point mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 30) no Hoare annotation was computed. [2018-12-09 11:33:09,964 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-12-09 11:33:09,964 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-12-09 11:33:09,964 INFO L448 ceAbstractionStarter]: For program point L29(lines 29 31) no Hoare annotation was computed. [2018-12-09 11:33:09,964 INFO L448 ceAbstractionStarter]: For program point L25(lines 25 31) no Hoare annotation was computed. [2018-12-09 11:33:09,964 INFO L448 ceAbstractionStarter]: For program point mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 30) no Hoare annotation was computed. [2018-12-09 11:33:09,964 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 13 35) no Hoare annotation was computed. [2018-12-09 11:33:09,964 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-12-09 11:33:09,964 INFO L448 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2018-12-09 11:33:09,964 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 13 35) the Hoare annotation is: true [2018-12-09 11:33:09,964 INFO L448 ceAbstractionStarter]: For program point L30-1(line 30) no Hoare annotation was computed. [2018-12-09 11:33:09,964 INFO L448 ceAbstractionStarter]: For program point L26(line 26) no Hoare annotation was computed. [2018-12-09 11:33:09,964 INFO L448 ceAbstractionStarter]: For program point L26-1(line 26) no Hoare annotation was computed. [2018-12-09 11:33:09,965 INFO L448 ceAbstractionStarter]: For program point L22(lines 22 32) no Hoare annotation was computed. [2018-12-09 11:33:09,967 INFO L444 ceAbstractionStarter]: At program point L22-1(lines 19 33) the Hoare annotation is: (let ((.cse66 (<= 0 (+ main_~x~0 2147483648))) (.cse1 (<= 0 main_~i~0)) (.cse6 (<= main_~N~0 10)) (.cse59 (<= 0 (+ main_~y~0 2147483648)))) (let ((.cse11 (<= 0 (+ main_~x~0 4))) (.cse13 (<= 0 (+ main_~x~0 2))) (.cse16 (and .cse66 .cse1 .cse6 .cse59))) (let ((.cse24 (<= main_~y~0 2)) (.cse15 (<= 0 (+ main_~y~0 1))) (.cse7 (<= 0 (+ main_~x~0 1))) (.cse9 (<= main_~y~0 0)) (.cse20 (<= main_~y~0 4)) (.cse36 (<= 0 (+ main_~y~0 2))) (.cse27 (<= main_~y~0 3)) (.cse42 (and .cse13 .cse16)) (.cse35 (<= 0 (+ main_~x~0 5))) (.cse4 (<= main_~x~0 0)) (.cse0 (<= 0 (+ main_~x~0 3))) (.cse3 (<= 0 main_~y~0)) (.cse63 (and .cse11 .cse16))) (let ((.cse48 (and .cse3 .cse63)) (.cse8 (<= main_~N~0 (+ main_~i~0 9))) (.cse40 (<= main_~y~0 9)) (.cse47 (<= main_~x~0 8)) (.cse32 (and .cse0 .cse16)) (.cse61 (and .cse1 .cse35 .cse4 .cse6 .cse59)) (.cse25 (<= main_~y~0 5)) (.cse43 (<= main_~x~0 9)) (.cse17 (and .cse42 .cse3)) (.cse60 (and (and .cse16 .cse3 .cse27) .cse4)) (.cse39 (and .cse66 .cse1 .cse36 .cse4 .cse6)) (.cse57 (<= 0 (+ main_~x~0 9))) (.cse49 (<= main_~x~0 3)) (.cse56 (<= main_~x~0 7)) (.cse50 (<= 0 (+ main_~y~0 5))) (.cse52 (<= main_~x~0 5)) (.cse28 (<= 0 (+ main_~x~0 6))) (.cse65 (and .cse20 .cse16 .cse4)) (.cse14 (<= main_~N~0 (+ main_~i~0 7))) (.cse19 (<= main_~y~0 8)) (.cse64 (and .cse0 .cse1 .cse3 .cse6)) (.cse34 (<= main_~y~0 6)) (.cse41 (and .cse1 .cse7 .cse4 .cse6 .cse59 .cse9)) (.cse55 (<= 0 (+ main_~y~0 6))) (.cse53 (<= 0 (+ main_~y~0 7))) (.cse23 (<= main_~x~0 1)) (.cse45 (<= main_~N~0 (+ main_~i~0 8))) (.cse26 (<= main_~N~0 (+ main_~i~0 5))) (.cse51 (and .cse13 .cse1 .cse4 .cse6 .cse59 .cse9)) (.cse33 (<= 0 (+ main_~y~0 3))) (.cse29 (<= main_~N~0 (+ main_~i~0 3))) (.cse2 (<= main_~N~0 (+ main_~i~0 6))) (.cse38 (<= main_~x~0 4)) (.cse30 (<= 0 (+ main_~x~0 8))) (.cse5 (<= main_~y~0 1)) (.cse12 (<= main_~N~0 (+ main_~i~0 4))) (.cse58 (and .cse66 .cse15 .cse1 .cse6)) (.cse46 (<= main_~x~0 6)) (.cse18 (<= main_~N~0 main_~i~0)) (.cse31 (<= main_~N~0 (+ main_~i~0 2))) (.cse44 (<= 0 (+ main_~y~0 4))) (.cse62 (<= main_~y~0 7)) (.cse21 (<= main_~x~0 2)) (.cse22 (<= 0 main_~x~0)) (.cse37 (<= main_~N~0 (+ main_~i~0 1))) (.cse54 (<= 0 (+ main_~x~0 7))) (.cse10 (and .cse66 .cse1 .cse3 .cse24 .cse6))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (and .cse1 .cse3 .cse7 .cse8 .cse4 .cse6 .cse9) (and .cse10 .cse11 .cse12 .cse4) (and .cse13 .cse14 .cse15 .cse16 .cse4 .cse9) (and .cse17 .cse4 .cse18 .cse19) (and .cse20 .cse1 .cse3 .cse12 .cse21 .cse6 .cse22) (and .cse14 .cse1 .cse23 .cse3 .cse24 .cse6 .cse22) (and .cse1 .cse23 .cse3 .cse12 .cse25 .cse6 .cse22) (and .cse1 .cse26 .cse3 .cse27 .cse21 .cse6 .cse22) (and .cse1 .cse28 .cse3 .cse4 .cse5 .cse6 .cse29) (and .cse30 .cse31 .cse1 .cse3 .cse4 .cse6 .cse9) (and .cse32 .cse12 .cse33 .cse4 .cse9) (and .cse1 .cse23 .cse34 .cse3 .cse6 .cse22 .cse29) (and .cse31 .cse28 .cse4 .cse10) (and .cse31 .cse35 .cse16 .cse33 .cse4 .cse9) (and .cse13 .cse16 .cse2 .cse36 .cse4 .cse9) (and .cse16 .cse28 .cse37 .cse33 .cse4 .cse9) (and .cse1 .cse12 .cse38 .cse36 .cse6 .cse22 .cse9) (and .cse39 .cse11 .cse12 .cse9) (and .cse11 .cse16 .cse33 .cse4 .cse9 .cse29) (and (and .cse11 .cse16 .cse3 .cse27) .cse4 .cse29) (and .cse1 .cse40 .cse3 .cse37 .cse4 .cse6 .cse22) (and .cse1 .cse3 .cse18 .cse4 (<= 0 (+ main_~x~0 10)) .cse6 .cse9) (and (or (and .cse1 .cse23 .cse2 .cse6 .cse22 .cse9) (and .cse2 .cse41)) .cse33) (and .cse3 .cse12 .cse4 (and .cse20 .cse42)) (and .cse32 .cse3 .cse27 .cse12 .cse4) (and .cse43 .cse1 .cse3 .cse37 .cse6 .cse22 .cse9) (and .cse31 .cse39 .cse28 .cse9) (and .cse44 .cse35 .cse16 .cse37 .cse4 .cse9) (and .cse1 .cse45 .cse3 .cse7 .cse4 .cse5 .cse6) (and .cse1 .cse46 .cse3 .cse12 .cse6 .cse22 .cse9) (and .cse1 .cse23 .cse3 .cse37 .cse6 .cse22 .cse19) (and .cse1 .cse3 .cse47 .cse24 .cse18 .cse6 .cse22) (and .cse37 .cse4 (and .cse25 .cse48)) (and .cse14 .cse49 .cse1 .cse3 .cse6 .cse22 .cse9) (and .cse50 .cse51 .cse29) (and .cse20 .cse1 .cse3 .cse37 .cse6 .cse22 .cse52) (and .cse32 .cse44 .cse4 .cse9 .cse29) (and .cse44 .cse1 .cse2 .cse4 .cse6 .cse22 .cse9) (and .cse31 .cse53 .cse41) (and .cse1 .cse23 .cse3 .cse45 .cse5 .cse6 .cse22) (and .cse16 .cse33 .cse4 .cse18 .cse54 .cse9) (and .cse1 .cse3 .cse8 .cse4 .cse5 .cse6 .cse22) (and .cse1 .cse12 .cse55 .cse4 .cse6 .cse22 .cse9) (and .cse1 .cse50 .cse38 .cse37 .cse6 .cse22 .cse9) (and .cse15 .cse49 .cse1 .cse2 .cse6 .cse22 .cse9) (and .cse14 .cse1 .cse3 .cse21 .cse5 .cse6 .cse22) (and .cse1 .cse3 .cse25 .cse18 .cse6 .cse22 .cse52) (and .cse31 .cse32 .cse3 .cse25 .cse4) (and .cse1 .cse3 .cse25 .cse38 .cse37 .cse6 .cse22) (and .cse1 .cse38 .cse33 .cse6 .cse22 .cse9 .cse29) (and .cse20 .cse31 .cse1 .cse3 .cse38 .cse6 .cse22) (and .cse49 .cse1 .cse53 .cse18 .cse6 .cse22 .cse9) (and .cse1 .cse3 .cse56 .cse24 .cse37 .cse6 .cse22) (and .cse1 .cse26 .cse11 .cse3 .cse4 .cse5 .cse6) (and .cse1 .cse3 .cse47 .cse37 .cse5 .cse6 .cse22) (and .cse1 .cse3 .cse37 .cse4 .cse6 .cse57 .cse9) (and .cse30 .cse37 .cse4 .cse58 .cse9) (and .cse1 .cse47 .cse36 .cse18 .cse6 .cse22 .cse9) (and (or (and .cse14 .cse1 .cse23 .cse6 .cse22 .cse9) (and .cse14 .cse41)) .cse36) (and .cse31 .cse1 .cse3 .cse27 .cse6 .cse22 .cse52) (and .cse35 .cse10 .cse4 .cse29) (and .cse1 .cse53 .cse21 .cse37 .cse6 .cse22 .cse9) (and .cse1 (<= main_~x~0 10) .cse3 .cse18 .cse6 .cse22 .cse9) (and .cse31 .cse44 .cse1 .cse38 .cse6 .cse22 .cse9) (and .cse15 .cse1 .cse46 .cse6 .cse22 .cse9 .cse29) (and .cse1 .cse40 .cse7 .cse4 .cse18 .cse6 .cse59) (and .cse1 .cse56 .cse37 .cse36 .cse6 .cse22 .cse9) (and .cse44 .cse12 .cse51) (and .cse1 .cse3 .cse12 .cse38 .cse24 .cse6 .cse22) (and .cse1 .cse38 .cse55 .cse18 .cse6 .cse22 .cse9) (and .cse43 .cse15 .cse1 .cse18 .cse6 .cse22 .cse9) (and .cse31 .cse60 .cse35) (and .cse1 .cse2 .cse27 .cse3 .cse7 .cse4 .cse6) (and .cse49 .cse1 .cse12 .cse33 .cse6 .cse22 .cse9) (and .cse1 .cse36 .cse6 .cse22 .cse9 .cse52 .cse29) (and .cse31 .cse1 .cse34 .cse3 .cse21 .cse6 .cse22) (and .cse14 .cse15 .cse1 .cse21 .cse6 .cse22 .cse9) (and .cse1 .cse12 .cse3 .cse25 .cse7 .cse4 .cse6) (and .cse1 .cse26 .cse3 .cse25 .cse4 .cse6 .cse22) (and .cse49 .cse1 .cse2 .cse3 .cse5 .cse6 .cse22) (and .cse15 .cse1 .cse8 .cse4 .cse6 .cse22 .cse9) (and .cse1 .cse50 .cse23 .cse12 .cse6 .cse22 .cse9) (and .cse61 .cse3 .cse25 .cse18) (and .cse13 .cse14 .cse1 .cse3 .cse4 .cse5 .cse6) (and .cse1 .cse21 .cse18 .cse6 .cse22 .cse19 .cse59) (and .cse31 .cse15 .cse1 .cse56 .cse6 .cse22 .cse9) (and .cse49 .cse1 .cse26 .cse36 .cse6 .cse22 .cse9) (and .cse20 .cse1 .cse26 .cse3 .cse7 .cse4 .cse6) (and .cse1 .cse4 .cse18 .cse6 .cse22 .cse59) (and .cse1 .cse46 .cse3 .cse27 .cse37 .cse6 .cse22) (and .cse44 .cse1 .cse26 .cse23 .cse6 .cse22 .cse9) (and .cse1 .cse50 .cse26 .cse4 .cse6 .cse22 .cse9) (and .cse0 .cse14 .cse1 .cse3 .cse4 .cse6 .cse9) (and .cse15 .cse1 .cse47 .cse37 .cse6 .cse22 .cse9) (and .cse1 .cse35 .cse26 .cse3 .cse4 .cse6 .cse9) (and .cse30 .cse39 .cse18 .cse9) (and .cse15 .cse1 .cse26 .cse38 .cse6 .cse22 .cse9) (and .cse1 .cse2 .cse3 .cse24 .cse21 .cse6 .cse22) (and .cse42 .cse3 .cse25 .cse4 .cse29) (and .cse28 .cse58 .cse4 .cse9 .cse29) (and .cse14 .cse1 .cse3 .cse27 .cse4 .cse6 .cse22) (and .cse1 .cse45 .cse36 .cse4 .cse6 .cse22 .cse9) (and .cse1 .cse3 .cse27 .cse38 .cse6 .cse22 .cse29) (and .cse44 .cse49 .cse1 .cse6 .cse22 .cse9 .cse29) (and .cse1 .cse11 .cse2 .cse3 .cse4 .cse6 .cse9) (and .cse44 .cse1 .cse46 .cse18 .cse6 .cse22 .cse9) (and .cse32 .cse37 .cse55 .cse4 .cse9) (and .cse1 .cse46 .cse3 .cse5 .cse6 .cse22 .cse29) (and .cse31 .cse1 .cse23 .cse3 .cse62 .cse6 .cse22) (and .cse4 .cse18 (and .cse34 .cse48)) (and .cse1 .cse34 .cse3 .cse7 .cse4 .cse6 .cse29) (and .cse1 .cse23 .cse3 .cse8 .cse6 .cse22 .cse9) (and .cse31 .cse1 (<= 0 (+ main_~y~0 8)) .cse4 .cse6 .cse22 .cse9) (and .cse0 .cse26 .cse16 .cse36 .cse4 .cse9) (and .cse1 .cse3 .cse12 .cse5 .cse6 .cse22 .cse52) (and .cse31 .cse1 .cse3 .cse62 .cse7 .cse4 .cse6) (and .cse31 .cse1 .cse46 .cse3 .cse24 .cse6 .cse22) (and .cse1 .cse53 .cse4 .cse6 .cse22 .cse9 .cse29) (and .cse13 .cse31 .cse34 (and .cse1 .cse4 .cse6) .cse3) (and .cse50 .cse37 .cse63 .cse4 .cse9) (and .cse1 .cse3 .cse7 .cse37 .cse4 .cse6 .cse19) (and .cse30 .cse4 .cse18 .cse10) (and .cse53 .cse51 .cse37) (and .cse1 .cse26 .cse3 .cse6 .cse22 .cse9 .cse52) (and .cse55 .cse63 .cse4 .cse18 .cse9) (and .cse1 .cse35 .cse3 .cse12 .cse4 .cse5 .cse6) (and .cse31 .cse1 .cse3 .cse54 .cse4 .cse5 .cse6) (and .cse1 .cse23 .cse40 .cse18 .cse6 .cse22 .cse59) (and .cse60 .cse28 .cse37) (and .cse32 .cse31 .cse50 .cse4 .cse9) (and .cse31 .cse1 .cse3 .cse56 .cse5 .cse6 .cse22) (and .cse31 .cse49 .cse1 .cse50 .cse6 .cse22 .cse9) (and .cse31 .cse1 .cse33 .cse6 .cse22 .cse9 .cse52) (and .cse44 .cse1 .cse12 .cse21 .cse6 .cse22 .cse9) (and .cse26 .cse3 .cse27 .cse4 .cse42) (and .cse31 .cse1 .cse3 .cse47 .cse6 .cse22 .cse9) (and .cse1 .cse50 .cse21 .cse6 .cse22 .cse9 .cse29) (and .cse15 .cse1 .cse12 .cse6 .cse22 .cse9 .cse52) (and .cse1 .cse3 .cse24 .cse6 .cse22 .cse52 .cse29) (and .cse1 .cse3 .cse25 .cse21 .cse6 .cse22 .cse29) (and .cse49 .cse1 .cse34 .cse3 .cse37 .cse6 .cse22) (and .cse44 .cse26 .cse41) (and .cse1 .cse28 .cse12 .cse3 .cse4 .cse6 .cse9) (and .cse58 .cse4 .cse18 .cse57 .cse9) (and .cse15 .cse1 .cse23 .cse45 .cse6 .cse22 .cse9) (and (or (and .cse1 .cse23 .cse37 .cse6 .cse22 .cse9) (and .cse37 .cse41)) (<= 0 (+ main_~y~0 9))) (and .cse1 .cse23 .cse2 .cse3 .cse27 .cse6 .cse22) (and .cse26 .cse11 .cse58 .cse4 .cse9) (and .cse32 .cse53 .cse4 .cse18 .cse9) (and .cse13 .cse1 .cse45 .cse3 .cse4 .cse6 .cse9) (and .cse50 .cse61 .cse18 .cse9) (and .cse1 .cse3 .cse56 .cse6 .cse22 .cse9 .cse29) (and .cse0 .cse26 .cse10 .cse4) (and .cse1 .cse26 .cse3 .cse38 .cse5 .cse6 .cse22) (and .cse62 .cse64 .cse4 .cse18) (and .cse44 .cse16 .cse28 .cse4 .cse18 .cse9) (and .cse1 .cse2 .cse21 .cse36 .cse6 .cse22 .cse9) (and .cse31 .cse1 .cse21 .cse55 .cse6 .cse22 .cse9) (and .cse31 .cse49 .cse1 .cse3 .cse25 .cse6 .cse22) (and .cse20 .cse49 .cse1 .cse3 .cse6 .cse22 .cse29) (and .cse43 .cse1 .cse3 .cse5 .cse18 .cse6 .cse22) (and .cse31 .cse58 .cse4 .cse54 .cse9) (and .cse17 .cse62 .cse37 .cse4) (and .cse1 .cse3 .cse4 .cse6 .cse22 .cse9) (and .cse51 .cse18) (and .cse49 .cse1 .cse26 .cse3 .cse24 .cse6 .cse22) (and .cse1 .cse34 .cse3 .cse12 .cse4 .cse6 .cse22) (and .cse60 .cse18 .cse54) (and .cse49 .cse1 .cse3 .cse27 .cse12 .cse6 .cse22) (and .cse1 .cse3 .cse56 .cse27 .cse18 .cse6 .cse22) (and .cse39 .cse37 .cse54 .cse9) (and .cse44 .cse1 .cse37 .cse6 .cse22 .cse9 .cse52) (and .cse39 .cse35 .cse9 .cse29) (and .cse35 .cse3 .cse65 .cse37) (and .cse50 .cse12 .cse41) (and .cse31 .cse51 .cse55) (and .cse49 .cse1 .cse3 .cse62 .cse18 .cse6 .cse22) (and .cse1 .cse3 .cse4 .cse5 .cse18 .cse6 .cse57) (and .cse1 .cse26 .cse21 .cse33 .cse6 .cse22 .cse9) (and .cse14 .cse1 .cse3 .cse24 .cse7 .cse4 .cse6) (and .cse1 .cse46 .cse37 .cse33 .cse6 .cse22 .cse9) (and .cse2 .cse3 .cse24 (and .cse13 .cse1 .cse4 .cse6)) (and .cse49 .cse1 .cse37 .cse55 .cse6 .cse22 .cse9) (and .cse31 .cse3 .cse4 (and .cse20 .cse63)) (and .cse1 .cse3 .cse45 .cse24 .cse4 .cse6 .cse22) (and .cse1 .cse34 .cse3 .cse38 .cse18 .cse6 .cse22) (and .cse1 .cse56 .cse33 .cse18 .cse6 .cse22 .cse9) (and .cse1 .cse50 .cse18 .cse6 .cse22 .cse9 .cse52) (and .cse28 (and .cse3 .cse65) .cse18) (and .cse20 .cse1 .cse2 .cse3 .cse4 .cse6 .cse22) (and .cse0 .cse3 (and .cse20 .cse1 .cse4 .cse6) .cse29) (and .cse14 .cse1 .cse33 .cse4 .cse6 .cse22 .cse9) (and .cse1 .cse3 .cse4 .cse54 .cse6 .cse9 .cse29) (and .cse0 .cse2 .cse58 .cse4 .cse9) (and .cse31 .cse1 .cse3 .cse4 .cse6 .cse22 .cse19) (and .cse31 .cse1 .cse46 .cse36 .cse6 .cse22 .cse9) (and .cse15 .cse45 (and .cse1 .cse6) .cse7 .cse4 .cse9) (and .cse64 .cse34 .cse37 .cse4) (and .cse20 .cse1 .cse26 .cse23 .cse3 .cse6 .cse22) (and (or (and .cse1 .cse23 .cse6 .cse22 .cse9 .cse29) (and .cse41 .cse29)) .cse55) (and .cse31 .cse1 .cse53 .cse23 .cse6 .cse22 .cse9) (and .cse1 .cse3 .cse45 .cse21 .cse6 .cse22 .cse9) (and .cse26 .cse51 .cse33) (and .cse1 .cse3 .cse62 .cse4 .cse6 .cse22 .cse29) (and .cse1 .cse2 .cse3 .cse38 .cse6 .cse22 .cse9) (and .cse30 .cse1 .cse3 .cse37 .cse4 .cse5 .cse6) (and .cse35 .cse12 .cse58 .cse4 .cse9) (and .cse20 .cse1 .cse46 .cse3 .cse18 .cse6 .cse22) (and .cse31 .cse44 .cse63 .cse4 .cse9) (and .cse1 .cse3 .cse62 .cse21 .cse37 .cse6 .cse22) (and .cse37 .cse4 .cse54 .cse10)))))) [2018-12-09 11:33:10,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 11:33:10 BoogieIcfgContainer [2018-12-09 11:33:10,005 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 11:33:10,005 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 11:33:10,006 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 11:33:10,006 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 11:33:10,006 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:31:07" (3/4) ... [2018-12-09 11:33:10,009 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 11:33:10,013 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 11:33:10,014 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 11:33:10,016 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-09 11:33:10,017 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-09 11:33:10,017 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 11:33:10,017 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 11:33:10,052 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b40e30a0-f7c7-4d39-9d87-9931a9f8f543/bin-2019/utaipan/witness.graphml [2018-12-09 11:33:10,052 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 11:33:10,052 INFO L168 Benchmark]: Toolchain (without parser) took 122903.94 ms. Allocated memory was 1.0 GB in the beginning and 3.0 GB in the end (delta: 2.0 GB). Free memory was 952.2 MB in the beginning and 486.2 MB in the end (delta: 466.0 MB). Peak memory consumption was 2.5 GB. Max. memory is 11.5 GB. [2018-12-09 11:33:10,053 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:33:10,053 INFO L168 Benchmark]: CACSL2BoogieTranslator took 122.20 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 11:33:10,053 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.23 ms. Allocated memory is still 1.0 GB. Free memory is still 941.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:33:10,053 INFO L168 Benchmark]: Boogie Preprocessor took 39.66 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.8 MB). Free memory was 941.5 MB in the beginning and 1.1 GB in the end (delta: -139.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2018-12-09 11:33:10,053 INFO L168 Benchmark]: RCFGBuilder took 142.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2018-12-09 11:33:10,054 INFO L168 Benchmark]: TraceAbstraction took 122538.99 ms. Allocated memory was 1.1 GB in the beginning and 3.0 GB in the end (delta: 1.9 GB). Free memory was 1.1 GB in the beginning and 486.2 MB in the end (delta: 575.2 MB). Peak memory consumption was 4.3 GB. Max. memory is 11.5 GB. [2018-12-09 11:33:10,054 INFO L168 Benchmark]: Witness Printer took 46.44 ms. Allocated memory is still 3.0 GB. Free memory is still 486.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:33:10,055 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 122.20 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.5 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 11.23 ms. Allocated memory is still 1.0 GB. Free memory is still 941.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.66 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.8 MB). Free memory was 941.5 MB in the beginning and 1.1 GB in the end (delta: -139.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 142.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 122538.99 ms. Allocated memory was 1.1 GB in the beginning and 3.0 GB in the end (delta: 1.9 GB). Free memory was 1.1 GB in the beginning and 486.2 MB in the end (delta: 575.2 MB). Peak memory consumption was 4.3 GB. Max. memory is 11.5 GB. * Witness Printer took 46.44 ms. Allocated memory is still 3.0 GB. Free memory is still 486.2 MB. 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: 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: 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: 20]: 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: 28]: 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: 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 <= x + 3 && 0 <= i) && N <= i + 6) && 0 <= y) && x <= 0) && y <= 1) && N <= 10) || ((((((0 <= i && 0 <= y) && 0 <= x + 1) && N <= i + 9) && x <= 0) && N <= 10) && y <= 0)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && y <= 2) && N <= 10) && 0 <= x + 4) && N <= i + 4) && x <= 0)) || (((((0 <= x + 2 && N <= i + 7) && 0 <= y + 1) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && y <= 0)) || (((((0 <= x + 2 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y) && x <= 0) && N <= i) && y <= 8)) || ((((((y <= 4 && 0 <= i) && 0 <= y) && N <= i + 4) && x <= 2) && N <= 10) && 0 <= x)) || ((((((N <= i + 7 && 0 <= i) && x <= 1) && 0 <= y) && y <= 2) && N <= 10) && 0 <= x)) || ((((((0 <= i && x <= 1) && 0 <= y) && N <= i + 4) && y <= 5) && N <= 10) && 0 <= x)) || ((((((0 <= i && N <= i + 5) && 0 <= y) && y <= 3) && x <= 2) && N <= 10) && 0 <= x)) || ((((((0 <= i && 0 <= x + 6) && 0 <= y) && x <= 0) && y <= 1) && N <= 10) && N <= i + 3)) || ((((((0 <= x + 8 && N <= i + 2) && 0 <= i) && 0 <= y) && x <= 0) && N <= 10) && y <= 0)) || (((((0 <= x + 3 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && N <= i + 4) && 0 <= y + 3) && x <= 0) && y <= 0)) || ((((((0 <= i && x <= 1) && y <= 6) && 0 <= y) && N <= 10) && 0 <= x) && N <= i + 3)) || (((N <= i + 2 && 0 <= x + 6) && x <= 0) && (((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && y <= 2) && N <= 10)) || (((((N <= i + 2 && 0 <= x + 5) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 3) && x <= 0) && y <= 0)) || (((((0 <= x + 2 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && N <= i + 6) && 0 <= y + 2) && x <= 0) && y <= 0)) || ((((((((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= x + 6) && N <= i + 1) && 0 <= y + 3) && x <= 0) && y <= 0)) || ((((((0 <= i && N <= i + 4) && x <= 4) && 0 <= y + 2) && N <= 10) && 0 <= x) && y <= 0)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y + 2) && x <= 0) && N <= 10) && 0 <= x + 4) && N <= i + 4) && y <= 0)) || (((((0 <= x + 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 3) && x <= 0) && y <= 0) && N <= i + 3)) || (((((0 <= x + 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y) && y <= 3) && x <= 0) && N <= i + 3)) || ((((((0 <= i && y <= 9) && 0 <= y) && N <= i + 1) && x <= 0) && N <= 10) && 0 <= x)) || ((((((0 <= i && 0 <= y) && N <= i) && x <= 0) && 0 <= x + 10) && N <= 10) && y <= 0)) || (((((((0 <= i && x <= 1) && N <= i + 6) && N <= 10) && 0 <= x) && y <= 0) || (N <= i + 6 && ((((0 <= i && 0 <= x + 1) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && y <= 0)) && 0 <= y + 3)) || (((0 <= y && N <= i + 4) && x <= 0) && y <= 4 && 0 <= x + 2 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648)) || (((((0 <= x + 3 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y) && y <= 3) && N <= i + 4) && x <= 0)) || ((((((x <= 9 && 0 <= i) && 0 <= y) && N <= i + 1) && N <= 10) && 0 <= x) && y <= 0)) || (((N <= i + 2 && (((0 <= x + 2147483648 && 0 <= i) && 0 <= y + 2) && x <= 0) && N <= 10) && 0 <= x + 6) && y <= 0)) || (((((0 <= y + 4 && 0 <= x + 5) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && N <= i + 1) && x <= 0) && y <= 0)) || ((((((0 <= i && N <= i + 8) && 0 <= y) && 0 <= x + 1) && x <= 0) && y <= 1) && N <= 10)) || ((((((0 <= i && x <= 6) && 0 <= y) && N <= i + 4) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && x <= 1) && 0 <= y) && N <= i + 1) && N <= 10) && 0 <= x) && y <= 8)) || ((((((0 <= i && 0 <= y) && x <= 8) && y <= 2) && N <= i) && N <= 10) && 0 <= x)) || ((N <= i + 1 && x <= 0) && y <= 5 && 0 <= y && 0 <= x + 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648)) || ((((((N <= i + 7 && x <= 3) && 0 <= i) && 0 <= y) && N <= 10) && 0 <= x) && y <= 0)) || ((0 <= y + 5 && ((((0 <= x + 2 && 0 <= i) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && y <= 0) && N <= i + 3)) || ((((((y <= 4 && 0 <= i) && 0 <= y) && N <= i + 1) && N <= 10) && 0 <= x) && x <= 5)) || (((((0 <= x + 3 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 4) && x <= 0) && y <= 0) && N <= i + 3)) || ((((((0 <= y + 4 && 0 <= i) && N <= i + 6) && x <= 0) && N <= 10) && 0 <= x) && y <= 0)) || ((N <= i + 2 && 0 <= y + 7) && ((((0 <= i && 0 <= x + 1) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && y <= 0)) || ((((((0 <= i && x <= 1) && 0 <= y) && N <= i + 8) && y <= 1) && N <= 10) && 0 <= x)) || ((((((((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 3) && x <= 0) && N <= i) && 0 <= x + 7) && y <= 0)) || ((((((0 <= i && 0 <= y) && N <= i + 9) && x <= 0) && y <= 1) && N <= 10) && 0 <= x)) || ((((((0 <= i && N <= i + 4) && 0 <= y + 6) && x <= 0) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && 0 <= y + 5) && x <= 4) && N <= i + 1) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= y + 1 && x <= 3) && 0 <= i) && N <= i + 6) && N <= 10) && 0 <= x) && y <= 0)) || ((((((N <= i + 7 && 0 <= i) && 0 <= y) && x <= 2) && y <= 1) && N <= 10) && 0 <= x)) || ((((((0 <= i && 0 <= y) && y <= 5) && N <= i) && N <= 10) && 0 <= x) && x <= 5)) || ((((N <= i + 2 && 0 <= x + 3 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y) && y <= 5) && x <= 0)) || ((((((0 <= i && 0 <= y) && y <= 5) && x <= 4) && N <= i + 1) && N <= 10) && 0 <= x)) || ((((((0 <= i && x <= 4) && 0 <= y + 3) && N <= 10) && 0 <= x) && y <= 0) && N <= i + 3)) || ((((((y <= 4 && N <= i + 2) && 0 <= i) && 0 <= y) && x <= 4) && N <= 10) && 0 <= x)) || ((((((x <= 3 && 0 <= i) && 0 <= y + 7) && N <= i) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && 0 <= y) && x <= 7) && y <= 2) && N <= i + 1) && N <= 10) && 0 <= x)) || ((((((0 <= i && N <= i + 5) && 0 <= x + 4) && 0 <= y) && x <= 0) && y <= 1) && N <= 10)) || ((((((0 <= i && 0 <= y) && x <= 8) && N <= i + 1) && y <= 1) && N <= 10) && 0 <= x)) || ((((((0 <= i && 0 <= y) && N <= i + 1) && x <= 0) && N <= 10) && 0 <= x + 9) && y <= 0)) || ((((0 <= x + 8 && N <= i + 1) && x <= 0) && ((0 <= x + 2147483648 && 0 <= y + 1) && 0 <= i) && N <= 10) && y <= 0)) || ((((((0 <= i && x <= 8) && 0 <= y + 2) && N <= i) && N <= 10) && 0 <= x) && y <= 0)) || (((((((N <= i + 7 && 0 <= i) && x <= 1) && N <= 10) && 0 <= x) && y <= 0) || (N <= i + 7 && ((((0 <= i && 0 <= x + 1) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && y <= 0)) && 0 <= y + 2)) || ((((((N <= i + 2 && 0 <= i) && 0 <= y) && y <= 3) && N <= 10) && 0 <= x) && x <= 5)) || (((0 <= x + 5 && (((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && y <= 2) && N <= 10) && x <= 0) && N <= i + 3)) || ((((((0 <= i && 0 <= y + 7) && x <= 2) && N <= i + 1) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && x <= 10) && 0 <= y) && N <= i) && N <= 10) && 0 <= x) && y <= 0)) || ((((((N <= i + 2 && 0 <= y + 4) && 0 <= i) && x <= 4) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= y + 1 && 0 <= i) && x <= 6) && N <= 10) && 0 <= x) && y <= 0) && N <= i + 3)) || ((((((0 <= i && y <= 9) && 0 <= x + 1) && x <= 0) && N <= i) && N <= 10) && 0 <= y + 2147483648)) || ((((((0 <= i && x <= 7) && N <= i + 1) && 0 <= y + 2) && N <= 10) && 0 <= x) && y <= 0)) || ((0 <= y + 4 && N <= i + 4) && ((((0 <= x + 2 && 0 <= i) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && y <= 0)) || ((((((0 <= i && 0 <= y) && N <= i + 4) && x <= 4) && y <= 2) && N <= 10) && 0 <= x)) || ((((((0 <= i && x <= 4) && 0 <= y + 6) && N <= i) && N <= 10) && 0 <= x) && y <= 0)) || ((((((x <= 9 && 0 <= y + 1) && 0 <= i) && N <= i) && N <= 10) && 0 <= x) && y <= 0)) || ((N <= i + 2 && (((((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y) && y <= 3) && x <= 0) && 0 <= x + 5)) || ((((((0 <= i && N <= i + 6) && y <= 3) && 0 <= y) && 0 <= x + 1) && x <= 0) && N <= 10)) || ((((((x <= 3 && 0 <= i) && N <= i + 4) && 0 <= y + 3) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && 0 <= y + 2) && N <= 10) && 0 <= x) && y <= 0) && x <= 5) && N <= i + 3)) || ((((((N <= i + 2 && 0 <= i) && y <= 6) && 0 <= y) && x <= 2) && N <= 10) && 0 <= x)) || ((((((N <= i + 7 && 0 <= y + 1) && 0 <= i) && x <= 2) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && N <= i + 4) && 0 <= y) && y <= 5) && 0 <= x + 1) && x <= 0) && N <= 10)) || ((((((0 <= i && N <= i + 5) && 0 <= y) && y <= 5) && x <= 0) && N <= 10) && 0 <= x)) || ((((((x <= 3 && 0 <= i) && N <= i + 6) && 0 <= y) && y <= 1) && N <= 10) && 0 <= x)) || ((((((0 <= y + 1 && 0 <= i) && N <= i + 9) && x <= 0) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && 0 <= y + 5) && x <= 1) && N <= i + 4) && N <= 10) && 0 <= x) && y <= 0)) || (((((((0 <= i && 0 <= x + 5) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && 0 <= y) && y <= 5) && N <= i)) || ((((((0 <= x + 2 && N <= i + 7) && 0 <= i) && 0 <= y) && x <= 0) && y <= 1) && N <= 10)) || ((((((0 <= i && x <= 2) && N <= i) && N <= 10) && 0 <= x) && y <= 8) && 0 <= y + 2147483648)) || ((((((N <= i + 2 && 0 <= y + 1) && 0 <= i) && x <= 7) && N <= 10) && 0 <= x) && y <= 0)) || ((((((x <= 3 && 0 <= i) && N <= i + 5) && 0 <= y + 2) && N <= 10) && 0 <= x) && y <= 0)) || ((((((y <= 4 && 0 <= i) && N <= i + 5) && 0 <= y) && 0 <= x + 1) && x <= 0) && N <= 10)) || (((((0 <= i && x <= 0) && N <= i) && N <= 10) && 0 <= x) && 0 <= y + 2147483648)) || ((((((0 <= i && x <= 6) && 0 <= y) && y <= 3) && N <= i + 1) && N <= 10) && 0 <= x)) || ((((((0 <= y + 4 && 0 <= i) && N <= i + 5) && x <= 1) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && 0 <= y + 5) && N <= i + 5) && x <= 0) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= x + 3 && N <= i + 7) && 0 <= i) && 0 <= y) && x <= 0) && N <= 10) && y <= 0)) || ((((((0 <= y + 1 && 0 <= i) && x <= 8) && N <= i + 1) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && 0 <= x + 5) && N <= i + 5) && 0 <= y) && x <= 0) && N <= 10) && y <= 0)) || (((0 <= x + 8 && (((0 <= x + 2147483648 && 0 <= i) && 0 <= y + 2) && x <= 0) && N <= 10) && N <= i) && y <= 0)) || ((((((0 <= y + 1 && 0 <= i) && N <= i + 5) && x <= 4) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && N <= i + 6) && 0 <= y) && y <= 2) && x <= 2) && N <= 10) && 0 <= x)) || (((((0 <= x + 2 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y) && y <= 5) && x <= 0) && N <= i + 3)) || ((((0 <= x + 6 && ((0 <= x + 2147483648 && 0 <= y + 1) && 0 <= i) && N <= 10) && x <= 0) && y <= 0) && N <= i + 3)) || ((((((N <= i + 7 && 0 <= i) && 0 <= y) && y <= 3) && x <= 0) && N <= 10) && 0 <= x)) || ((((((0 <= i && N <= i + 8) && 0 <= y + 2) && x <= 0) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && 0 <= y) && y <= 3) && x <= 4) && N <= 10) && 0 <= x) && N <= i + 3)) || ((((((0 <= y + 4 && x <= 3) && 0 <= i) && N <= 10) && 0 <= x) && y <= 0) && N <= i + 3)) || ((((((0 <= i && 0 <= x + 4) && N <= i + 6) && 0 <= y) && x <= 0) && N <= 10) && y <= 0)) || ((((((0 <= y + 4 && 0 <= i) && x <= 6) && N <= i) && N <= 10) && 0 <= x) && y <= 0)) || (((((0 <= x + 3 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && N <= i + 1) && 0 <= y + 6) && x <= 0) && y <= 0)) || ((((((0 <= i && x <= 6) && 0 <= y) && y <= 1) && N <= 10) && 0 <= x) && N <= i + 3)) || ((((((N <= i + 2 && 0 <= i) && x <= 1) && 0 <= y) && y <= 7) && N <= 10) && 0 <= x)) || ((x <= 0 && N <= i) && y <= 6 && 0 <= y && 0 <= x + 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648)) || ((((((0 <= i && y <= 6) && 0 <= y) && 0 <= x + 1) && x <= 0) && N <= 10) && N <= i + 3)) || ((((((0 <= i && x <= 1) && 0 <= y) && N <= i + 9) && N <= 10) && 0 <= x) && y <= 0)) || ((((((N <= i + 2 && 0 <= i) && 0 <= y + 8) && x <= 0) && N <= 10) && 0 <= x) && y <= 0)) || (((((0 <= x + 3 && N <= i + 5) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 2) && x <= 0) && y <= 0)) || ((((((0 <= i && 0 <= y) && N <= i + 4) && y <= 1) && N <= 10) && 0 <= x) && x <= 5)) || ((((((N <= i + 2 && 0 <= i) && 0 <= y) && y <= 7) && 0 <= x + 1) && x <= 0) && N <= 10)) || ((((((N <= i + 2 && 0 <= i) && x <= 6) && 0 <= y) && y <= 2) && N <= 10) && 0 <= x)) || ((((((0 <= i && 0 <= y + 7) && x <= 0) && N <= 10) && 0 <= x) && y <= 0) && N <= i + 3)) || ((((0 <= x + 2 && N <= i + 2) && y <= 6) && (0 <= i && x <= 0) && N <= 10) && 0 <= y)) || ((((0 <= y + 5 && N <= i + 1) && 0 <= x + 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && y <= 0)) || ((((((0 <= i && 0 <= y) && 0 <= x + 1) && N <= i + 1) && x <= 0) && N <= 10) && y <= 8)) || (((0 <= x + 8 && x <= 0) && N <= i) && (((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && y <= 2) && N <= 10)) || ((0 <= y + 7 && ((((0 <= x + 2 && 0 <= i) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && y <= 0) && N <= i + 1)) || ((((((0 <= i && N <= i + 5) && 0 <= y) && N <= 10) && 0 <= x) && y <= 0) && x <= 5)) || ((((0 <= y + 6 && 0 <= x + 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && N <= i) && y <= 0)) || ((((((0 <= i && 0 <= x + 5) && 0 <= y) && N <= i + 4) && x <= 0) && y <= 1) && N <= 10)) || ((((((N <= i + 2 && 0 <= i) && 0 <= y) && 0 <= x + 7) && x <= 0) && y <= 1) && N <= 10)) || ((((((0 <= i && x <= 1) && y <= 9) && N <= i) && N <= 10) && 0 <= x) && 0 <= y + 2147483648)) || ((((((((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y) && y <= 3) && x <= 0) && 0 <= x + 6) && N <= i + 1)) || (((((0 <= x + 3 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && N <= i + 2) && 0 <= y + 5) && x <= 0) && y <= 0)) || ((((((N <= i + 2 && 0 <= i) && 0 <= y) && x <= 7) && y <= 1) && N <= 10) && 0 <= x)) || ((((((N <= i + 2 && x <= 3) && 0 <= i) && 0 <= y + 5) && N <= 10) && 0 <= x) && y <= 0)) || ((((((N <= i + 2 && 0 <= i) && 0 <= y + 3) && N <= 10) && 0 <= x) && y <= 0) && x <= 5)) || ((((((0 <= y + 4 && 0 <= i) && N <= i + 4) && x <= 2) && N <= 10) && 0 <= x) && y <= 0)) || ((((N <= i + 5 && 0 <= y) && y <= 3) && x <= 0) && 0 <= x + 2 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648)) || ((((((N <= i + 2 && 0 <= i) && 0 <= y) && x <= 8) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && 0 <= y + 5) && x <= 2) && N <= 10) && 0 <= x) && y <= 0) && N <= i + 3)) || ((((((0 <= y + 1 && 0 <= i) && N <= i + 4) && N <= 10) && 0 <= x) && y <= 0) && x <= 5)) || ((((((0 <= i && 0 <= y) && y <= 2) && N <= 10) && 0 <= x) && x <= 5) && N <= i + 3)) || ((((((0 <= i && 0 <= y) && y <= 5) && x <= 2) && N <= 10) && 0 <= x) && N <= i + 3)) || ((((((x <= 3 && 0 <= i) && y <= 6) && 0 <= y) && N <= i + 1) && N <= 10) && 0 <= x)) || ((0 <= y + 4 && N <= i + 5) && ((((0 <= i && 0 <= x + 1) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && y <= 0)) || ((((((0 <= i && 0 <= x + 6) && N <= i + 4) && 0 <= y) && x <= 0) && N <= 10) && y <= 0)) || (((((((0 <= x + 2147483648 && 0 <= y + 1) && 0 <= i) && N <= 10) && x <= 0) && N <= i) && 0 <= x + 9) && y <= 0)) || ((((((0 <= y + 1 && 0 <= i) && x <= 1) && N <= i + 8) && N <= 10) && 0 <= x) && y <= 0)) || (((((((0 <= i && x <= 1) && N <= i + 1) && N <= 10) && 0 <= x) && y <= 0) || (N <= i + 1 && ((((0 <= i && 0 <= x + 1) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && y <= 0)) && 0 <= y + 9)) || ((((((0 <= i && x <= 1) && N <= i + 6) && 0 <= y) && y <= 3) && N <= 10) && 0 <= x)) || ((((N <= i + 5 && 0 <= x + 4) && ((0 <= x + 2147483648 && 0 <= y + 1) && 0 <= i) && N <= 10) && x <= 0) && y <= 0)) || (((((0 <= x + 3 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 7) && x <= 0) && N <= i) && y <= 0)) || ((((((0 <= x + 2 && 0 <= i) && N <= i + 8) && 0 <= y) && x <= 0) && N <= 10) && y <= 0)) || (((0 <= y + 5 && (((0 <= i && 0 <= x + 5) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && N <= i) && y <= 0)) || ((((((0 <= i && 0 <= y) && x <= 7) && N <= 10) && 0 <= x) && y <= 0) && N <= i + 3)) || (((0 <= x + 3 && N <= i + 5) && (((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && y <= 2) && N <= 10) && x <= 0)) || ((((((0 <= i && N <= i + 5) && 0 <= y) && x <= 4) && y <= 1) && N <= 10) && 0 <= x)) || (((y <= 7 && ((0 <= x + 3 && 0 <= i) && 0 <= y) && N <= 10) && x <= 0) && N <= i)) || (((((0 <= y + 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= x + 6) && x <= 0) && N <= i) && y <= 0)) || ((((((0 <= i && N <= i + 6) && x <= 2) && 0 <= y + 2) && N <= 10) && 0 <= x) && y <= 0)) || ((((((N <= i + 2 && 0 <= i) && x <= 2) && 0 <= y + 6) && N <= 10) && 0 <= x) && y <= 0)) || ((((((N <= i + 2 && x <= 3) && 0 <= i) && 0 <= y) && y <= 5) && N <= 10) && 0 <= x)) || ((((((y <= 4 && x <= 3) && 0 <= i) && 0 <= y) && N <= 10) && 0 <= x) && N <= i + 3)) || ((((((x <= 9 && 0 <= i) && 0 <= y) && y <= 1) && N <= i) && N <= 10) && 0 <= x)) || ((((N <= i + 2 && ((0 <= x + 2147483648 && 0 <= y + 1) && 0 <= i) && N <= 10) && x <= 0) && 0 <= x + 7) && y <= 0)) || (((((0 <= x + 2 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y) && y <= 7) && N <= i + 1) && x <= 0)) || (((((0 <= i && 0 <= y) && x <= 0) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= x + 2 && 0 <= i) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && y <= 0) && N <= i)) || ((((((x <= 3 && 0 <= i) && N <= i + 5) && 0 <= y) && y <= 2) && N <= 10) && 0 <= x)) || ((((((0 <= i && y <= 6) && 0 <= y) && N <= i + 4) && x <= 0) && N <= 10) && 0 <= x)) || ((((((((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y) && y <= 3) && x <= 0) && N <= i) && 0 <= x + 7)) || ((((((x <= 3 && 0 <= i) && 0 <= y) && y <= 3) && N <= i + 4) && N <= 10) && 0 <= x)) || ((((((0 <= i && 0 <= y) && x <= 7) && y <= 3) && N <= i) && N <= 10) && 0 <= x)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y + 2) && x <= 0) && N <= 10) && N <= i + 1) && 0 <= x + 7) && y <= 0)) || ((((((0 <= y + 4 && 0 <= i) && N <= i + 1) && N <= 10) && 0 <= x) && y <= 0) && x <= 5)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y + 2) && x <= 0) && N <= 10) && 0 <= x + 5) && y <= 0) && N <= i + 3)) || (((0 <= x + 5 && 0 <= y) && (y <= 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && N <= i + 1)) || ((0 <= y + 5 && N <= i + 4) && ((((0 <= i && 0 <= x + 1) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && y <= 0)) || ((N <= i + 2 && ((((0 <= x + 2 && 0 <= i) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && y <= 0) && 0 <= y + 6)) || ((((((x <= 3 && 0 <= i) && 0 <= y) && y <= 7) && N <= i) && N <= 10) && 0 <= x)) || ((((((0 <= i && 0 <= y) && x <= 0) && y <= 1) && N <= i) && N <= 10) && 0 <= x + 9)) || ((((((0 <= i && N <= i + 5) && x <= 2) && 0 <= y + 3) && N <= 10) && 0 <= x) && y <= 0)) || ((((((N <= i + 7 && 0 <= i) && 0 <= y) && y <= 2) && 0 <= x + 1) && x <= 0) && N <= 10)) || ((((((0 <= i && x <= 6) && N <= i + 1) && 0 <= y + 3) && N <= 10) && 0 <= x) && y <= 0)) || (((N <= i + 6 && 0 <= y) && y <= 2) && ((0 <= x + 2 && 0 <= i) && x <= 0) && N <= 10)) || ((((((x <= 3 && 0 <= i) && N <= i + 1) && 0 <= y + 6) && N <= 10) && 0 <= x) && y <= 0)) || (((N <= i + 2 && 0 <= y) && x <= 0) && y <= 4 && 0 <= x + 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648)) || ((((((0 <= i && 0 <= y) && N <= i + 8) && y <= 2) && x <= 0) && N <= 10) && 0 <= x)) || ((((((0 <= i && y <= 6) && 0 <= y) && x <= 4) && N <= i) && N <= 10) && 0 <= x)) || ((((((0 <= i && x <= 7) && 0 <= y + 3) && N <= i) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && 0 <= y + 5) && N <= i) && N <= 10) && 0 <= x) && y <= 0) && x <= 5)) || ((0 <= x + 6 && 0 <= y && (y <= 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && N <= i)) || ((((((y <= 4 && 0 <= i) && N <= i + 6) && 0 <= y) && x <= 0) && N <= 10) && 0 <= x)) || (((0 <= x + 3 && 0 <= y) && ((y <= 4 && 0 <= i) && x <= 0) && N <= 10) && N <= i + 3)) || ((((((N <= i + 7 && 0 <= i) && 0 <= y + 3) && x <= 0) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && 0 <= y) && x <= 0) && 0 <= x + 7) && N <= 10) && y <= 0) && N <= i + 3)) || ((((0 <= x + 3 && N <= i + 6) && ((0 <= x + 2147483648 && 0 <= y + 1) && 0 <= i) && N <= 10) && x <= 0) && y <= 0)) || ((((((N <= i + 2 && 0 <= i) && 0 <= y) && x <= 0) && N <= 10) && 0 <= x) && y <= 8)) || ((((((N <= i + 2 && 0 <= i) && x <= 6) && 0 <= y + 2) && N <= 10) && 0 <= x) && y <= 0)) || (((((0 <= y + 1 && N <= i + 8) && 0 <= i && N <= 10) && 0 <= x + 1) && x <= 0) && y <= 0)) || ((((((0 <= x + 3 && 0 <= i) && 0 <= y) && N <= 10) && y <= 6) && N <= i + 1) && x <= 0)) || ((((((y <= 4 && 0 <= i) && N <= i + 5) && x <= 1) && 0 <= y) && N <= 10) && 0 <= x)) || (((((((0 <= i && x <= 1) && N <= 10) && 0 <= x) && y <= 0) && N <= i + 3) || ((((((0 <= i && 0 <= x + 1) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && y <= 0) && N <= i + 3)) && 0 <= y + 6)) || ((((((N <= i + 2 && 0 <= i) && 0 <= y + 7) && x <= 1) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && 0 <= y) && N <= i + 8) && x <= 2) && N <= 10) && 0 <= x) && y <= 0)) || ((N <= i + 5 && ((((0 <= x + 2 && 0 <= i) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && y <= 0) && 0 <= y + 3)) || ((((((0 <= i && 0 <= y) && y <= 7) && x <= 0) && N <= 10) && 0 <= x) && N <= i + 3)) || ((((((0 <= i && N <= i + 6) && 0 <= y) && x <= 4) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= x + 8 && 0 <= i) && 0 <= y) && N <= i + 1) && x <= 0) && y <= 1) && N <= 10)) || ((((0 <= x + 5 && N <= i + 4) && ((0 <= x + 2147483648 && 0 <= y + 1) && 0 <= i) && N <= 10) && x <= 0) && y <= 0)) || ((((((y <= 4 && 0 <= i) && x <= 6) && 0 <= y) && N <= i) && N <= 10) && 0 <= x)) || ((((N <= i + 2 && 0 <= y + 4) && 0 <= x + 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && y <= 0)) || ((((((0 <= i && 0 <= y) && y <= 7) && x <= 2) && N <= i + 1) && N <= 10) && 0 <= x)) || (((N <= i + 1 && x <= 0) && 0 <= x + 7) && (((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && y <= 2) && N <= 10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 36 locations, 10 error locations. SAFE Result, 122.4s OverallTime, 49 OverallIterations, 13 TraceHistogramMax, 13.2s AutomataDifference, 0.0s DeadEndRemovalTime, 86.6s HoareAnnotationTime, HoareTripleCheckerStatistics: 1469 SDtfs, 8173 SDslu, 6256 SDs, 0 SdLazy, 1594 SolverSat, 1407 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4914 GetRequests, 4380 SyntacticMatches, 0 SemanticMatches, 534 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107157occurred in iteration=46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 7 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 16.1s AutomataMinimizationTime, 49 MinimizatonAttempts, 261319 StatesRemovedByMinimization, 44 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 1839 NumberOfFragments, 6091 HoareAnnotationTreeSize, 5 FomulaSimplifications, 292925 FormulaSimplificationTreeSizeReduction, 24.9s HoareSimplificationTime, 5 FomulaSimplificationsInter, 79435 FormulaSimplificationTreeSizeReductionInter, 61.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 4790 NumberOfCodeBlocks, 4790 NumberOfCodeBlocksAsserted, 174 NumberOfCheckSat, 6972 ConstructedInterpolants, 0 QuantifiedInterpolants, 1738298 SizeOfPredicates, 2 NumberOfNonLiveVariables, 5325 ConjunctsInSsa, 298 ConjunctsInUnsatCore, 133 InterpolantComputations, 11 PerfectInterpolantSequences, 559/20934 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...