./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 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/config/AutomizerReach.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_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer --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 Automizer --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 0.1.23-0cd3be1 [2018-11-28 13:17:38,144 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 13:17:38,145 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 13:17:38,154 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 13:17:38,154 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 13:17:38,155 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 13:17:38,155 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 13:17:38,156 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 13:17:38,158 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 13:17:38,158 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 13:17:38,159 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 13:17:38,159 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 13:17:38,159 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 13:17:38,160 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 13:17:38,160 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 13:17:38,161 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 13:17:38,161 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 13:17:38,162 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 13:17:38,164 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 13:17:38,165 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 13:17:38,165 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 13:17:38,166 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 13:17:38,167 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 13:17:38,167 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 13:17:38,167 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 13:17:38,168 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 13:17:38,168 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 13:17:38,169 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 13:17:38,169 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 13:17:38,170 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 13:17:38,170 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 13:17:38,171 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 13:17:38,171 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 13:17:38,171 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 13:17:38,171 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 13:17:38,172 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 13:17:38,172 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-28 13:17:38,179 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 13:17:38,179 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 13:17:38,180 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 13:17:38,180 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 13:17:38,180 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 13:17:38,181 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 13:17:38,181 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 13:17:38,181 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 13:17:38,181 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 13:17:38,181 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 13:17:38,181 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 13:17:38,181 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 13:17:38,182 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 13:17:38,182 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 13:17:38,182 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-28 13:17:38,182 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 13:17:38,182 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 13:17:38,182 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 13:17:38,183 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 13:17:38,183 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 13:17:38,183 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 13:17:38,183 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 13:17:38,183 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:17:38,183 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 13:17:38,184 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 13:17:38,184 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 13:17:38,184 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 13:17:38,184 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 13:17:38,184 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 13:17:38,184 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer 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 -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0a853f0131530f88013a3fcfdf4f133f41c0569 [2018-11-28 13:17:38,207 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 13:17:38,216 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 13:17:38,218 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 13:17:38,219 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 13:17:38,220 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 13:17:38,220 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random2d_true-termination_true-no-overflow.c [2018-11-28 13:17:38,261 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/data/dbdf51aa0/6d8a39d21d274935bf824ba4d192d142/FLAG445bd1091 [2018-11-28 13:17:38,644 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 13:17:38,644 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random2d_true-termination_true-no-overflow.c [2018-11-28 13:17:38,647 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/data/dbdf51aa0/6d8a39d21d274935bf824ba4d192d142/FLAG445bd1091 [2018-11-28 13:17:38,657 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/data/dbdf51aa0/6d8a39d21d274935bf824ba4d192d142 [2018-11-28 13:17:38,659 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 13:17:38,660 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 13:17:38,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 13:17:38,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 13:17:38,663 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 13:17:38,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:17:38" (1/1) ... [2018-11-28 13:17:38,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a39b0ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:17:38, skipping insertion in model container [2018-11-28 13:17:38,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:17:38" (1/1) ... [2018-11-28 13:17:38,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 13:17:38,678 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 13:17:38,773 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:17:38,775 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 13:17:38,785 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:17:38,793 INFO L195 MainTranslator]: Completed translation [2018-11-28 13:17:38,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:17:38 WrapperNode [2018-11-28 13:17:38,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 13:17:38,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 13:17:38,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 13:17:38,794 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 13:17:38,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:17:38" (1/1) ... [2018-11-28 13:17:38,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:17:38" (1/1) ... [2018-11-28 13:17:38,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 13:17:38,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 13:17:38,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 13:17:38,808 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 13:17:38,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:17:38" (1/1) ... [2018-11-28 13:17:38,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:17:38" (1/1) ... [2018-11-28 13:17:38,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:17:38" (1/1) ... [2018-11-28 13:17:38,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:17:38" (1/1) ... [2018-11-28 13:17:38,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:17:38" (1/1) ... [2018-11-28 13:17:38,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:17:38" (1/1) ... [2018-11-28 13:17:38,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:17:38" (1/1) ... [2018-11-28 13:17:38,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 13:17:38,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 13:17:38,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 13:17:38,821 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 13:17:38,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:17:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:17:38,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 13:17:38,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 13:17:38,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 13:17:38,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 13:17:38,896 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 13:17:38,896 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 13:17:39,015 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 13:17:39,015 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 13:17:39,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:17:39 BoogieIcfgContainer [2018-11-28 13:17:39,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 13:17:39,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 13:17:39,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 13:17:39,019 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 13:17:39,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 01:17:38" (1/3) ... [2018-11-28 13:17:39,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b5d5d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:17:39, skipping insertion in model container [2018-11-28 13:17:39,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:17:38" (2/3) ... [2018-11-28 13:17:39,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b5d5d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:17:39, skipping insertion in model container [2018-11-28 13:17:39,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:17:39" (3/3) ... [2018-11-28 13:17:39,021 INFO L112 eAbstractionObserver]: Analyzing ICFG ChawdharyCookGulwaniSagivYang-ESOP2008-random2d_true-termination_true-no-overflow.c [2018-11-28 13:17:39,027 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 13:17:39,032 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2018-11-28 13:17:39,045 INFO L257 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2018-11-28 13:17:39,070 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 13:17:39,071 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 13:17:39,071 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 13:17:39,071 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 13:17:39,071 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 13:17:39,071 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 13:17:39,071 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 13:17:39,071 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 13:17:39,071 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 13:17:39,084 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-11-28 13:17:39,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-28 13:17:39,087 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:39,088 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:39,089 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:39,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:39,093 INFO L82 PathProgramCache]: Analyzing trace with hash 252417093, now seen corresponding path program 1 times [2018-11-28 13:17:39,094 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:39,094 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:39,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:39,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:17:39,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:39,199 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:17:39,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 13:17:39,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 13:17:39,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 13:17:39,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:17:39,215 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2018-11-28 13:17:39,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:39,258 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2018-11-28 13:17:39,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 13:17:39,259 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-11-28 13:17:39,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:39,266 INFO L225 Difference]: With dead ends: 48 [2018-11-28 13:17:39,266 INFO L226 Difference]: Without dead ends: 34 [2018-11-28 13:17:39,268 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 [2018-11-28 13:17:39,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-28 13:17:39,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2018-11-28 13:17:39,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 13:17:39,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2018-11-28 13:17:39,290 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 7 [2018-11-28 13:17:39,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:39,290 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2018-11-28 13:17:39,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 13:17:39,290 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2018-11-28 13:17:39,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-28 13:17:39,291 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:39,291 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:39,291 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:39,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:39,291 INFO L82 PathProgramCache]: Analyzing trace with hash -765004662, now seen corresponding path program 1 times [2018-11-28 13:17:39,292 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:39,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:39,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:39,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:17:39,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:39,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:39,313 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:17:39,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 13:17:39,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 13:17:39,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 13:17:39,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:17:39,315 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 3 states. [2018-11-28 13:17:39,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:39,325 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2018-11-28 13:17:39,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 13:17:39,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-11-28 13:17:39,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:39,326 INFO L225 Difference]: With dead ends: 33 [2018-11-28 13:17:39,326 INFO L226 Difference]: Without dead ends: 32 [2018-11-28 13:17:39,327 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 [2018-11-28 13:17:39,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-28 13:17:39,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-11-28 13:17:39,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-28 13:17:39,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2018-11-28 13:17:39,330 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 8 [2018-11-28 13:17:39,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:39,330 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2018-11-28 13:17:39,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 13:17:39,330 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2018-11-28 13:17:39,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 13:17:39,331 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:39,331 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:39,331 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:39,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:39,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1157363318, now seen corresponding path program 1 times [2018-11-28 13:17:39,331 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:39,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:39,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:39,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:17:39,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:39,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:39,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:17:39,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 13:17:39,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 13:17:39,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 13:17:39,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:17:39,353 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 3 states. [2018-11-28 13:17:39,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:39,382 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2018-11-28 13:17:39,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 13:17:39,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-28 13:17:39,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:39,383 INFO L225 Difference]: With dead ends: 55 [2018-11-28 13:17:39,383 INFO L226 Difference]: Without dead ends: 53 [2018-11-28 13:17:39,383 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 [2018-11-28 13:17:39,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-28 13:17:39,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2018-11-28 13:17:39,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-28 13:17:39,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2018-11-28 13:17:39,388 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 11 [2018-11-28 13:17:39,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:39,389 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2018-11-28 13:17:39,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 13:17:39,389 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2018-11-28 13:17:39,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 13:17:39,389 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:39,389 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:39,389 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:39,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:39,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1157326159, now seen corresponding path program 1 times [2018-11-28 13:17:39,390 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:39,390 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:39,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:39,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:17:39,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:39,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 13:17:39,411 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:39,412 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:39,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:17:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:39,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:39,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:39,485 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:39,485 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2018-11-28 13:17:39,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 13:17:39,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 13:17:39,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:17:39,486 INFO L87 Difference]: Start difference. First operand 47 states and 63 transitions. Second operand 6 states. [2018-11-28 13:17:39,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:39,537 INFO L93 Difference]: Finished difference Result 108 states and 146 transitions. [2018-11-28 13:17:39,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 13:17:39,537 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-11-28 13:17:39,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:39,538 INFO L225 Difference]: With dead ends: 108 [2018-11-28 13:17:39,538 INFO L226 Difference]: Without dead ends: 107 [2018-11-28 13:17:39,539 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-11-28 13:17:39,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-11-28 13:17:39,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 44. [2018-11-28 13:17:39,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 13:17:39,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 59 transitions. [2018-11-28 13:17:39,545 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 59 transitions. Word has length 11 [2018-11-28 13:17:39,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:39,546 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 59 transitions. [2018-11-28 13:17:39,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 13:17:39,546 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 59 transitions. [2018-11-28 13:17:39,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-28 13:17:39,546 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:39,546 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:39,547 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:39,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:39,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1518524433, now seen corresponding path program 1 times [2018-11-28 13:17:39,547 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:39,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:39,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:39,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:17:39,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:39,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:39,567 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:17:39,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 13:17:39,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 13:17:39,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 13:17:39,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:17:39,568 INFO L87 Difference]: Start difference. First operand 44 states and 59 transitions. Second operand 3 states. [2018-11-28 13:17:39,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:39,605 INFO L93 Difference]: Finished difference Result 81 states and 113 transitions. [2018-11-28 13:17:39,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 13:17:39,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-11-28 13:17:39,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:39,606 INFO L225 Difference]: With dead ends: 81 [2018-11-28 13:17:39,607 INFO L226 Difference]: Without dead ends: 79 [2018-11-28 13:17:39,607 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 [2018-11-28 13:17:39,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-11-28 13:17:39,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2018-11-28 13:17:39,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-11-28 13:17:39,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 110 transitions. [2018-11-28 13:17:39,615 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 110 transitions. Word has length 12 [2018-11-28 13:17:39,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:39,615 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 110 transitions. [2018-11-28 13:17:39,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 13:17:39,616 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 110 transitions. [2018-11-28 13:17:39,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-28 13:17:39,616 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:39,616 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:39,616 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:39,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:39,617 INFO L82 PathProgramCache]: Analyzing trace with hash 170574579, now seen corresponding path program 1 times [2018-11-28 13:17:39,617 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:39,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:39,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:39,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:17:39,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:39,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:39,635 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:17:39,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 13:17:39,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 13:17:39,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 13:17:39,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:17:39,636 INFO L87 Difference]: Start difference. First operand 75 states and 110 transitions. Second operand 3 states. [2018-11-28 13:17:39,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:39,659 INFO L93 Difference]: Finished difference Result 143 states and 215 transitions. [2018-11-28 13:17:39,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 13:17:39,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-28 13:17:39,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:39,660 INFO L225 Difference]: With dead ends: 143 [2018-11-28 13:17:39,660 INFO L226 Difference]: Without dead ends: 141 [2018-11-28 13:17:39,660 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 [2018-11-28 13:17:39,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-11-28 13:17:39,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 133. [2018-11-28 13:17:39,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-11-28 13:17:39,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 199 transitions. [2018-11-28 13:17:39,670 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 199 transitions. Word has length 13 [2018-11-28 13:17:39,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:39,670 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 199 transitions. [2018-11-28 13:17:39,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 13:17:39,670 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 199 transitions. [2018-11-28 13:17:39,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 13:17:39,670 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:39,671 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:39,671 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:39,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:39,671 INFO L82 PathProgramCache]: Analyzing trace with hash 992844728, now seen corresponding path program 1 times [2018-11-28 13:17:39,671 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:39,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:39,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:39,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:17:39,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:39,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:39,692 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:17:39,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 13:17:39,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 13:17:39,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 13:17:39,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:17:39,693 INFO L87 Difference]: Start difference. First operand 133 states and 199 transitions. Second operand 3 states. [2018-11-28 13:17:39,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:39,716 INFO L93 Difference]: Finished difference Result 259 states and 393 transitions. [2018-11-28 13:17:39,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 13:17:39,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-11-28 13:17:39,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:39,718 INFO L225 Difference]: With dead ends: 259 [2018-11-28 13:17:39,718 INFO L226 Difference]: Without dead ends: 257 [2018-11-28 13:17:39,718 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 [2018-11-28 13:17:39,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-11-28 13:17:39,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 253. [2018-11-28 13:17:39,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-11-28 13:17:39,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 381 transitions. [2018-11-28 13:17:39,733 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 381 transitions. Word has length 14 [2018-11-28 13:17:39,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:39,734 INFO L480 AbstractCegarLoop]: Abstraction has 253 states and 381 transitions. [2018-11-28 13:17:39,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 13:17:39,734 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 381 transitions. [2018-11-28 13:17:39,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 13:17:39,735 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:39,735 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:39,735 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:39,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:39,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1784292138, now seen corresponding path program 1 times [2018-11-28 13:17:39,735 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:39,735 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:39,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:39,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:17:39,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:39,762 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:39,762 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:39,762 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:39,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:17:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:39,777 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:39,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:39,798 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:39,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-11-28 13:17:39,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 13:17:39,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 13:17:39,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:17:39,799 INFO L87 Difference]: Start difference. First operand 253 states and 381 transitions. Second operand 4 states. [2018-11-28 13:17:39,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:39,841 INFO L93 Difference]: Finished difference Result 453 states and 692 transitions. [2018-11-28 13:17:39,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 13:17:39,842 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-11-28 13:17:39,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:39,843 INFO L225 Difference]: With dead ends: 453 [2018-11-28 13:17:39,843 INFO L226 Difference]: Without dead ends: 451 [2018-11-28 13:17:39,844 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:17:39,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2018-11-28 13:17:39,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 361. [2018-11-28 13:17:39,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-11-28 13:17:39,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 547 transitions. [2018-11-28 13:17:39,858 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 547 transitions. Word has length 18 [2018-11-28 13:17:39,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:39,858 INFO L480 AbstractCegarLoop]: Abstraction has 361 states and 547 transitions. [2018-11-28 13:17:39,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 13:17:39,859 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 547 transitions. [2018-11-28 13:17:39,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 13:17:39,859 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:39,859 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:39,860 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:39,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:39,860 INFO L82 PathProgramCache]: Analyzing trace with hash -457667387, now seen corresponding path program 1 times [2018-11-28 13:17:39,860 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:39,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:39,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:39,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:17:39,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:39,893 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:39,893 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:39,893 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:39,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:17:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:39,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:39,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:39,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 13:17:39,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-11-28 13:17:39,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 13:17:39,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 13:17:39,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:17:39,925 INFO L87 Difference]: Start difference. First operand 361 states and 547 transitions. Second operand 5 states. [2018-11-28 13:17:39,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:39,961 INFO L93 Difference]: Finished difference Result 614 states and 943 transitions. [2018-11-28 13:17:39,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 13:17:39,961 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-11-28 13:17:39,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:39,963 INFO L225 Difference]: With dead ends: 614 [2018-11-28 13:17:39,964 INFO L226 Difference]: Without dead ends: 612 [2018-11-28 13:17:39,964 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:17:39,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2018-11-28 13:17:39,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 468. [2018-11-28 13:17:39,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2018-11-28 13:17:39,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 705 transitions. [2018-11-28 13:17:39,984 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 705 transitions. Word has length 20 [2018-11-28 13:17:39,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:39,984 INFO L480 AbstractCegarLoop]: Abstraction has 468 states and 705 transitions. [2018-11-28 13:17:39,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 13:17:39,984 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 705 transitions. [2018-11-28 13:17:39,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 13:17:39,985 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:39,985 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:39,985 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:39,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:39,986 INFO L82 PathProgramCache]: Analyzing trace with hash -789737976, now seen corresponding path program 1 times [2018-11-28 13:17:39,986 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:39,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:39,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:39,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:17:39,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:40,012 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:40,012 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:40,013 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:40,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:17:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:40,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:40,038 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:40,063 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:40,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-11-28 13:17:40,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 13:17:40,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 13:17:40,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:17:40,064 INFO L87 Difference]: Start difference. First operand 468 states and 705 transitions. Second operand 4 states. [2018-11-28 13:17:40,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:40,123 INFO L93 Difference]: Finished difference Result 838 states and 1288 transitions. [2018-11-28 13:17:40,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 13:17:40,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-11-28 13:17:40,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:40,127 INFO L225 Difference]: With dead ends: 838 [2018-11-28 13:17:40,127 INFO L226 Difference]: Without dead ends: 836 [2018-11-28 13:17:40,128 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:17:40,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2018-11-28 13:17:40,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 672. [2018-11-28 13:17:40,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 672 states. [2018-11-28 13:17:40,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1011 transitions. [2018-11-28 13:17:40,154 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1011 transitions. Word has length 22 [2018-11-28 13:17:40,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:40,154 INFO L480 AbstractCegarLoop]: Abstraction has 672 states and 1011 transitions. [2018-11-28 13:17:40,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 13:17:40,154 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1011 transitions. [2018-11-28 13:17:40,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 13:17:40,155 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:40,155 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:40,156 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:40,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:40,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1545985083, now seen corresponding path program 1 times [2018-11-28 13:17:40,156 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:40,156 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:40,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:40,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:17:40,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:40,191 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:40,191 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:40,192 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:40,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:17:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:40,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:40,222 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:40,244 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 13:17:40,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-11-28 13:17:40,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 13:17:40,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 13:17:40,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:17:40,245 INFO L87 Difference]: Start difference. First operand 672 states and 1011 transitions. Second operand 5 states. [2018-11-28 13:17:40,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:40,291 INFO L93 Difference]: Finished difference Result 1143 states and 1751 transitions. [2018-11-28 13:17:40,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 13:17:40,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-11-28 13:17:40,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:40,294 INFO L225 Difference]: With dead ends: 1143 [2018-11-28 13:17:40,294 INFO L226 Difference]: Without dead ends: 1141 [2018-11-28 13:17:40,295 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:17:40,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2018-11-28 13:17:40,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 875. [2018-11-28 13:17:40,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 875 states. [2018-11-28 13:17:40,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1301 transitions. [2018-11-28 13:17:40,317 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1301 transitions. Word has length 24 [2018-11-28 13:17:40,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:40,317 INFO L480 AbstractCegarLoop]: Abstraction has 875 states and 1301 transitions. [2018-11-28 13:17:40,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 13:17:40,317 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1301 transitions. [2018-11-28 13:17:40,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 13:17:40,318 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:40,318 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:40,319 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:40,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:40,320 INFO L82 PathProgramCache]: Analyzing trace with hash 582614026, now seen corresponding path program 2 times [2018-11-28 13:17:40,320 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:40,320 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:40,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:40,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:17:40,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:40,360 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:40,361 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:40,361 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:40,376 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:17:40,391 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:17:40,391 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:17:40,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:40,396 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:40,414 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:40,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-28 13:17:40,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 13:17:40,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 13:17:40,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:17:40,415 INFO L87 Difference]: Start difference. First operand 875 states and 1301 transitions. Second operand 5 states. [2018-11-28 13:17:40,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:40,458 INFO L93 Difference]: Finished difference Result 1508 states and 2270 transitions. [2018-11-28 13:17:40,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 13:17:40,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-11-28 13:17:40,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:40,461 INFO L225 Difference]: With dead ends: 1508 [2018-11-28 13:17:40,461 INFO L226 Difference]: Without dead ends: 1506 [2018-11-28 13:17:40,462 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:17:40,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2018-11-28 13:17:40,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1197. [2018-11-28 13:17:40,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2018-11-28 13:17:40,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1772 transitions. [2018-11-28 13:17:40,491 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1772 transitions. Word has length 25 [2018-11-28 13:17:40,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:40,491 INFO L480 AbstractCegarLoop]: Abstraction has 1197 states and 1772 transitions. [2018-11-28 13:17:40,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 13:17:40,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1772 transitions. [2018-11-28 13:17:40,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-28 13:17:40,492 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:40,492 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:40,493 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:40,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:40,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1259703649, now seen corresponding path program 1 times [2018-11-28 13:17:40,493 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:40,493 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:40,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:40,494 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:17:40,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:40,524 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:40,524 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:40,524 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:40,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:17:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:40,540 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:40,543 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:40,557 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:40,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-28 13:17:40,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 13:17:40,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 13:17:40,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:17:40,558 INFO L87 Difference]: Start difference. First operand 1197 states and 1772 transitions. Second operand 5 states. [2018-11-28 13:17:40,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:40,610 INFO L93 Difference]: Finished difference Result 1955 states and 2906 transitions. [2018-11-28 13:17:40,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 13:17:40,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-11-28 13:17:40,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:40,614 INFO L225 Difference]: With dead ends: 1955 [2018-11-28 13:17:40,614 INFO L226 Difference]: Without dead ends: 1954 [2018-11-28 13:17:40,615 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:17:40,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2018-11-28 13:17:40,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1433. [2018-11-28 13:17:40,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1433 states. [2018-11-28 13:17:40,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 2118 transitions. [2018-11-28 13:17:40,651 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 2118 transitions. Word has length 29 [2018-11-28 13:17:40,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:40,651 INFO L480 AbstractCegarLoop]: Abstraction has 1433 states and 2118 transitions. [2018-11-28 13:17:40,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 13:17:40,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 2118 transitions. [2018-11-28 13:17:40,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-28 13:17:40,652 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:40,652 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:40,653 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:40,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:40,653 INFO L82 PathProgramCache]: Analyzing trace with hash -886740333, now seen corresponding path program 2 times [2018-11-28 13:17:40,653 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:40,653 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:40,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:40,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:17:40,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:40,681 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:40,681 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:40,681 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:40,692 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:17:40,702 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:17:40,702 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:17:40,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:40,708 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:40,722 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:40,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-28 13:17:40,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 13:17:40,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 13:17:40,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:17:40,723 INFO L87 Difference]: Start difference. First operand 1433 states and 2118 transitions. Second operand 5 states. [2018-11-28 13:17:40,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:40,795 INFO L93 Difference]: Finished difference Result 2466 states and 3697 transitions. [2018-11-28 13:17:40,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 13:17:40,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2018-11-28 13:17:40,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:40,800 INFO L225 Difference]: With dead ends: 2466 [2018-11-28 13:17:40,800 INFO L226 Difference]: Without dead ends: 2464 [2018-11-28 13:17:40,801 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:17:40,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2018-11-28 13:17:40,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 1963. [2018-11-28 13:17:40,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1963 states. [2018-11-28 13:17:40,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1963 states to 1963 states and 2886 transitions. [2018-11-28 13:17:40,840 INFO L78 Accepts]: Start accepts. Automaton has 1963 states and 2886 transitions. Word has length 31 [2018-11-28 13:17:40,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:40,840 INFO L480 AbstractCegarLoop]: Abstraction has 1963 states and 2886 transitions. [2018-11-28 13:17:40,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 13:17:40,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1963 states and 2886 transitions. [2018-11-28 13:17:40,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 13:17:40,841 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:40,841 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:40,841 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:40,841 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:40,842 INFO L82 PathProgramCache]: Analyzing trace with hash -716039594, now seen corresponding path program 3 times [2018-11-28 13:17:40,842 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:40,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:40,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:40,843 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:17:40,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:40,879 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:40,880 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:40,880 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:40,896 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:17:40,919 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-28 13:17:40,919 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:17:40,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:40,923 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:40,938 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:40,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-28 13:17:40,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 13:17:40,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 13:17:40,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:17:40,939 INFO L87 Difference]: Start difference. First operand 1963 states and 2886 transitions. Second operand 6 states. [2018-11-28 13:17:41,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:41,007 INFO L93 Difference]: Finished difference Result 3177 states and 4736 transitions. [2018-11-28 13:17:41,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 13:17:41,008 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2018-11-28 13:17:41,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:41,013 INFO L225 Difference]: With dead ends: 3177 [2018-11-28 13:17:41,013 INFO L226 Difference]: Without dead ends: 3175 [2018-11-28 13:17:41,014 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:17:41,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3175 states. [2018-11-28 13:17:41,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3175 to 2567. [2018-11-28 13:17:41,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2567 states. [2018-11-28 13:17:41,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2567 states to 2567 states and 3753 transitions. [2018-11-28 13:17:41,064 INFO L78 Accepts]: Start accepts. Automaton has 2567 states and 3753 transitions. Word has length 32 [2018-11-28 13:17:41,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:41,064 INFO L480 AbstractCegarLoop]: Abstraction has 2567 states and 3753 transitions. [2018-11-28 13:17:41,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 13:17:41,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2567 states and 3753 transitions. [2018-11-28 13:17:41,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-28 13:17:41,065 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:41,065 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:41,065 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:41,066 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:41,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1327564892, now seen corresponding path program 1 times [2018-11-28 13:17:41,066 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:41,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:41,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:41,067 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:17:41,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:41,105 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:41,105 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:41,105 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:41,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:17:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:41,123 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:41,127 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:41,144 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:41,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-28 13:17:41,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 13:17:41,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 13:17:41,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:17:41,144 INFO L87 Difference]: Start difference. First operand 2567 states and 3753 transitions. Second operand 5 states. [2018-11-28 13:17:41,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:41,226 INFO L93 Difference]: Finished difference Result 4186 states and 6159 transitions. [2018-11-28 13:17:41,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 13:17:41,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-11-28 13:17:41,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:41,233 INFO L225 Difference]: With dead ends: 4186 [2018-11-28 13:17:41,233 INFO L226 Difference]: Without dead ends: 4185 [2018-11-28 13:17:41,234 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:17:41,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4185 states. [2018-11-28 13:17:41,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4185 to 3075. [2018-11-28 13:17:41,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3075 states. [2018-11-28 13:17:41,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3075 states to 3075 states and 4487 transitions. [2018-11-28 13:17:41,301 INFO L78 Accepts]: Start accepts. Automaton has 3075 states and 4487 transitions. Word has length 35 [2018-11-28 13:17:41,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:41,301 INFO L480 AbstractCegarLoop]: Abstraction has 3075 states and 4487 transitions. [2018-11-28 13:17:41,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 13:17:41,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3075 states and 4487 transitions. [2018-11-28 13:17:41,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-28 13:17:41,302 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:41,302 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:41,302 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:41,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:41,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1468116811, now seen corresponding path program 2 times [2018-11-28 13:17:41,304 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:41,304 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:41,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:41,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:17:41,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:41,343 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:41,343 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:41,343 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:41,351 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:17:41,359 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:17:41,359 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:17:41,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:41,365 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:41,380 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:41,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-28 13:17:41,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 13:17:41,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 13:17:41,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:17:41,381 INFO L87 Difference]: Start difference. First operand 3075 states and 4487 transitions. Second operand 6 states. [2018-11-28 13:17:41,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:41,474 INFO L93 Difference]: Finished difference Result 4731 states and 6951 transitions. [2018-11-28 13:17:41,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 13:17:41,474 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2018-11-28 13:17:41,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:41,481 INFO L225 Difference]: With dead ends: 4731 [2018-11-28 13:17:41,482 INFO L226 Difference]: Without dead ends: 4730 [2018-11-28 13:17:41,483 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:17:41,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4730 states. [2018-11-28 13:17:41,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4730 to 3463. [2018-11-28 13:17:41,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3463 states. [2018-11-28 13:17:41,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3463 states to 3463 states and 5051 transitions. [2018-11-28 13:17:41,557 INFO L78 Accepts]: Start accepts. Automaton has 3463 states and 5051 transitions. Word has length 37 [2018-11-28 13:17:41,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:41,557 INFO L480 AbstractCegarLoop]: Abstraction has 3463 states and 5051 transitions. [2018-11-28 13:17:41,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 13:17:41,557 INFO L276 IsEmpty]: Start isEmpty. Operand 3463 states and 5051 transitions. [2018-11-28 13:17:41,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-28 13:17:41,558 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:41,558 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:41,559 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:41,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:41,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1042968950, now seen corresponding path program 4 times [2018-11-28 13:17:41,559 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:41,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:41,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:41,560 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:17:41,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:41,606 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:41,606 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:41,606 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:41,621 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:17:41,630 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:17:41,631 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:17:41,632 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:41,638 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:41,652 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:41,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-28 13:17:41,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 13:17:41,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 13:17:41,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 13:17:41,653 INFO L87 Difference]: Start difference. First operand 3463 states and 5051 transitions. Second operand 7 states. [2018-11-28 13:17:41,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:41,772 INFO L93 Difference]: Finished difference Result 5330 states and 7888 transitions. [2018-11-28 13:17:41,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 13:17:41,773 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2018-11-28 13:17:41,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:41,785 INFO L225 Difference]: With dead ends: 5330 [2018-11-28 13:17:41,785 INFO L226 Difference]: Without dead ends: 5328 [2018-11-28 13:17:41,788 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 13:17:41,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5328 states. [2018-11-28 13:17:41,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5328 to 4381. [2018-11-28 13:17:41,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4381 states. [2018-11-28 13:17:41,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4381 states to 4381 states and 6357 transitions. [2018-11-28 13:17:41,940 INFO L78 Accepts]: Start accepts. Automaton has 4381 states and 6357 transitions. Word has length 39 [2018-11-28 13:17:41,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:41,940 INFO L480 AbstractCegarLoop]: Abstraction has 4381 states and 6357 transitions. [2018-11-28 13:17:41,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 13:17:41,940 INFO L276 IsEmpty]: Start isEmpty. Operand 4381 states and 6357 transitions. [2018-11-28 13:17:41,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-28 13:17:41,941 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:41,941 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:41,942 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:41,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:41,942 INFO L82 PathProgramCache]: Analyzing trace with hash 535132776, now seen corresponding path program 3 times [2018-11-28 13:17:41,942 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:41,942 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:41,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:41,946 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:17:41,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:41,998 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:41,998 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:41,999 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:42,008 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:17:42,020 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-28 13:17:42,020 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:17:42,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:42,026 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:42,051 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:42,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-28 13:17:42,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 13:17:42,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 13:17:42,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:17:42,052 INFO L87 Difference]: Start difference. First operand 4381 states and 6357 transitions. Second operand 6 states. [2018-11-28 13:17:42,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:42,223 INFO L93 Difference]: Finished difference Result 7073 states and 10429 transitions. [2018-11-28 13:17:42,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 13:17:42,224 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2018-11-28 13:17:42,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:42,235 INFO L225 Difference]: With dead ends: 7073 [2018-11-28 13:17:42,235 INFO L226 Difference]: Without dead ends: 7071 [2018-11-28 13:17:42,239 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 [2018-11-28 13:17:42,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7071 states. [2018-11-28 13:17:42,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7071 to 5733. [2018-11-28 13:17:42,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5733 states. [2018-11-28 13:17:42,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5733 states to 5733 states and 8269 transitions. [2018-11-28 13:17:42,422 INFO L78 Accepts]: Start accepts. Automaton has 5733 states and 8269 transitions. Word has length 40 [2018-11-28 13:17:42,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:42,422 INFO L480 AbstractCegarLoop]: Abstraction has 5733 states and 8269 transitions. [2018-11-28 13:17:42,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 13:17:42,423 INFO L276 IsEmpty]: Start isEmpty. Operand 5733 states and 8269 transitions. [2018-11-28 13:17:42,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-28 13:17:42,424 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:42,424 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:42,425 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:42,425 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:42,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1865791691, now seen corresponding path program 3 times [2018-11-28 13:17:42,425 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:42,425 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:42,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:42,426 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:17:42,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:42,484 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:42,484 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:42,484 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:42,494 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:17:42,519 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-11-28 13:17:42,519 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:17:42,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:42,526 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:42,550 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:42,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-28 13:17:42,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 13:17:42,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 13:17:42,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 13:17:42,551 INFO L87 Difference]: Start difference. First operand 5733 states and 8269 transitions. Second operand 7 states. [2018-11-28 13:17:42,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:42,758 INFO L93 Difference]: Finished difference Result 8442 states and 12279 transitions. [2018-11-28 13:17:42,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 13:17:42,759 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2018-11-28 13:17:42,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:42,773 INFO L225 Difference]: With dead ends: 8442 [2018-11-28 13:17:42,773 INFO L226 Difference]: Without dead ends: 8441 [2018-11-28 13:17:42,778 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 13:17:42,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8441 states. [2018-11-28 13:17:42,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8441 to 6241. [2018-11-28 13:17:42,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6241 states. [2018-11-28 13:17:42,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6241 states to 6241 states and 9003 transitions. [2018-11-28 13:17:42,957 INFO L78 Accepts]: Start accepts. Automaton has 6241 states and 9003 transitions. Word has length 45 [2018-11-28 13:17:42,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:42,957 INFO L480 AbstractCegarLoop]: Abstraction has 6241 states and 9003 transitions. [2018-11-28 13:17:42,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 13:17:42,957 INFO L276 IsEmpty]: Start isEmpty. Operand 6241 states and 9003 transitions. [2018-11-28 13:17:42,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-28 13:17:42,959 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:42,959 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:42,959 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:42,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:42,959 INFO L82 PathProgramCache]: Analyzing trace with hash 702806639, now seen corresponding path program 2 times [2018-11-28 13:17:42,959 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:42,960 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:42,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:42,960 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:17:42,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:42,989 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:42,990 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:42,990 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:43,002 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:17:43,013 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:17:43,013 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:17:43,015 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:43,020 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:43,045 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:43,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-28 13:17:43,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 13:17:43,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 13:17:43,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:17:43,046 INFO L87 Difference]: Start difference. First operand 6241 states and 9003 transitions. Second operand 6 states. [2018-11-28 13:17:43,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:43,242 INFO L93 Difference]: Finished difference Result 9588 states and 13947 transitions. [2018-11-28 13:17:43,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 13:17:43,242 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2018-11-28 13:17:43,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:43,256 INFO L225 Difference]: With dead ends: 9588 [2018-11-28 13:17:43,256 INFO L226 Difference]: Without dead ends: 9587 [2018-11-28 13:17:43,262 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:17:43,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9587 states. [2018-11-28 13:17:43,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9587 to 7029. [2018-11-28 13:17:43,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7029 states. [2018-11-28 13:17:43,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7029 states to 7029 states and 10135 transitions. [2018-11-28 13:17:43,453 INFO L78 Accepts]: Start accepts. Automaton has 7029 states and 10135 transitions. Word has length 45 [2018-11-28 13:17:43,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:43,454 INFO L480 AbstractCegarLoop]: Abstraction has 7029 states and 10135 transitions. [2018-11-28 13:17:43,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 13:17:43,454 INFO L276 IsEmpty]: Start isEmpty. Operand 7029 states and 10135 transitions. [2018-11-28 13:17:43,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-28 13:17:43,455 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:43,455 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:43,455 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:43,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:43,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1845802966, now seen corresponding path program 5 times [2018-11-28 13:17:43,456 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:43,456 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:43,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:43,456 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:17:43,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:43,505 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:43,505 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:43,505 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:43,522 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:17:43,537 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-28 13:17:43,537 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:17:43,539 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:43,544 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:43,568 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:43,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-28 13:17:43,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 13:17:43,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 13:17:43,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-28 13:17:43,569 INFO L87 Difference]: Start difference. First operand 7029 states and 10135 transitions. Second operand 8 states. [2018-11-28 13:17:43,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:43,757 INFO L93 Difference]: Finished difference Result 10385 states and 15210 transitions. [2018-11-28 13:17:43,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 13:17:43,757 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2018-11-28 13:17:43,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:43,765 INFO L225 Difference]: With dead ends: 10385 [2018-11-28 13:17:43,765 INFO L226 Difference]: Without dead ends: 10383 [2018-11-28 13:17:43,769 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-28 13:17:43,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10383 states. [2018-11-28 13:17:43,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10383 to 8669. [2018-11-28 13:17:43,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8669 states. [2018-11-28 13:17:43,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8669 states to 8669 states and 12442 transitions. [2018-11-28 13:17:43,908 INFO L78 Accepts]: Start accepts. Automaton has 8669 states and 12442 transitions. Word has length 46 [2018-11-28 13:17:43,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:43,908 INFO L480 AbstractCegarLoop]: Abstraction has 8669 states and 12442 transitions. [2018-11-28 13:17:43,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 13:17:43,908 INFO L276 IsEmpty]: Start isEmpty. Operand 8669 states and 12442 transitions. [2018-11-28 13:17:43,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-28 13:17:43,909 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:43,910 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:43,910 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:43,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:43,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1310627277, now seen corresponding path program 4 times [2018-11-28 13:17:43,910 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:43,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:43,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:43,911 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:17:43,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:43,944 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:43,944 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:43,944 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:43,964 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:17:43,972 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:17:43,972 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:17:43,974 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:43,978 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:43,997 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:43,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-28 13:17:43,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 13:17:43,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 13:17:43,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 13:17:43,998 INFO L87 Difference]: Start difference. First operand 8669 states and 12442 transitions. Second operand 7 states. [2018-11-28 13:17:44,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:44,182 INFO L93 Difference]: Finished difference Result 13316 states and 19433 transitions. [2018-11-28 13:17:44,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 13:17:44,183 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2018-11-28 13:17:44,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:44,195 INFO L225 Difference]: With dead ends: 13316 [2018-11-28 13:17:44,195 INFO L226 Difference]: Without dead ends: 13314 [2018-11-28 13:17:44,200 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 13:17:44,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13314 states. [2018-11-28 13:17:44,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13314 to 10971. [2018-11-28 13:17:44,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10971 states. [2018-11-28 13:17:44,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10971 states to 10971 states and 15661 transitions. [2018-11-28 13:17:44,523 INFO L78 Accepts]: Start accepts. Automaton has 10971 states and 15661 transitions. Word has length 49 [2018-11-28 13:17:44,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:44,523 INFO L480 AbstractCegarLoop]: Abstraction has 10971 states and 15661 transitions. [2018-11-28 13:17:44,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 13:17:44,523 INFO L276 IsEmpty]: Start isEmpty. Operand 10971 states and 15661 transitions. [2018-11-28 13:17:44,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-28 13:17:44,525 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:44,525 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:44,526 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:44,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:44,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1711194378, now seen corresponding path program 6 times [2018-11-28 13:17:44,526 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:44,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:44,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:44,527 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:17:44,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:44,606 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:44,607 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:44,607 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:44,616 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:17:44,631 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-28 13:17:44,631 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:17:44,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:44,638 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:44,662 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:44,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-28 13:17:44,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 13:17:44,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 13:17:44,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-28 13:17:44,663 INFO L87 Difference]: Start difference. First operand 10971 states and 15661 transitions. Second operand 9 states. [2018-11-28 13:17:44,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:44,914 INFO L93 Difference]: Finished difference Result 15626 states and 22669 transitions. [2018-11-28 13:17:44,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 13:17:44,915 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2018-11-28 13:17:44,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:44,925 INFO L225 Difference]: With dead ends: 15626 [2018-11-28 13:17:44,925 INFO L226 Difference]: Without dead ends: 15624 [2018-11-28 13:17:44,929 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-28 13:17:44,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15624 states. [2018-11-28 13:17:45,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15624 to 13095. [2018-11-28 13:17:45,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13095 states. [2018-11-28 13:17:45,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13095 states to 13095 states and 18613 transitions. [2018-11-28 13:17:45,136 INFO L78 Accepts]: Start accepts. Automaton has 13095 states and 18613 transitions. Word has length 53 [2018-11-28 13:17:45,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:45,136 INFO L480 AbstractCegarLoop]: Abstraction has 13095 states and 18613 transitions. [2018-11-28 13:17:45,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 13:17:45,136 INFO L276 IsEmpty]: Start isEmpty. Operand 13095 states and 18613 transitions. [2018-11-28 13:17:45,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-28 13:17:45,138 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:45,138 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:45,138 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:45,138 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:45,139 INFO L82 PathProgramCache]: Analyzing trace with hash -434547425, now seen corresponding path program 4 times [2018-11-28 13:17:45,139 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:45,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:45,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:45,140 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:17:45,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:45,207 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:45,207 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:45,207 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:45,217 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:17:45,228 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:17:45,228 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:17:45,229 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:45,234 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:45,248 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:45,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-28 13:17:45,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 13:17:45,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 13:17:45,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-28 13:17:45,248 INFO L87 Difference]: Start difference. First operand 13095 states and 18613 transitions. Second operand 8 states. [2018-11-28 13:17:45,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:45,543 INFO L93 Difference]: Finished difference Result 19894 states and 28525 transitions. [2018-11-28 13:17:45,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 13:17:45,543 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2018-11-28 13:17:45,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:45,555 INFO L225 Difference]: With dead ends: 19894 [2018-11-28 13:17:45,555 INFO L226 Difference]: Without dead ends: 19893 [2018-11-28 13:17:45,559 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-28 13:17:45,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19893 states. [2018-11-28 13:17:45,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19893 to 14133. [2018-11-28 13:17:45,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14133 states. [2018-11-28 13:17:45,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14133 states to 14133 states and 20101 transitions. [2018-11-28 13:17:45,827 INFO L78 Accepts]: Start accepts. Automaton has 14133 states and 20101 transitions. Word has length 53 [2018-11-28 13:17:45,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:45,827 INFO L480 AbstractCegarLoop]: Abstraction has 14133 states and 20101 transitions. [2018-11-28 13:17:45,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 13:17:45,827 INFO L276 IsEmpty]: Start isEmpty. Operand 14133 states and 20101 transitions. [2018-11-28 13:17:45,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-11-28 13:17:45,829 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:45,829 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:45,829 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:45,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:45,830 INFO L82 PathProgramCache]: Analyzing trace with hash 941207746, now seen corresponding path program 3 times [2018-11-28 13:17:45,830 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:45,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:45,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:45,830 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:17:45,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:45,873 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:45,873 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:45,873 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:45,881 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:17:45,890 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-11-28 13:17:45,890 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:17:45,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:45,897 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:45,921 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:45,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-28 13:17:45,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 13:17:45,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 13:17:45,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 13:17:45,922 INFO L87 Difference]: Start difference. First operand 14133 states and 20101 transitions. Second operand 7 states. [2018-11-28 13:17:46,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:46,171 INFO L93 Difference]: Finished difference Result 20778 states and 29841 transitions. [2018-11-28 13:17:46,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 13:17:46,171 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2018-11-28 13:17:46,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:46,185 INFO L225 Difference]: With dead ends: 20778 [2018-11-28 13:17:46,185 INFO L226 Difference]: Without dead ends: 20777 [2018-11-28 13:17:46,190 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 13:17:46,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20777 states. [2018-11-28 13:17:46,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20777 to 15385. [2018-11-28 13:17:46,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15385 states. [2018-11-28 13:17:46,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15385 states to 15385 states and 21885 transitions. [2018-11-28 13:17:46,507 INFO L78 Accepts]: Start accepts. Automaton has 15385 states and 21885 transitions. Word has length 55 [2018-11-28 13:17:46,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:46,507 INFO L480 AbstractCegarLoop]: Abstraction has 15385 states and 21885 transitions. [2018-11-28 13:17:46,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 13:17:46,507 INFO L276 IsEmpty]: Start isEmpty. Operand 15385 states and 21885 transitions. [2018-11-28 13:17:46,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-28 13:17:46,509 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:46,509 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:46,509 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:46,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:46,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1897860808, now seen corresponding path program 5 times [2018-11-28 13:17:46,510 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:46,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:46,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:46,510 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:17:46,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:46,589 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:46,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:46,589 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:46,595 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:17:46,606 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-28 13:17:46,606 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:17:46,607 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:46,612 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:46,637 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:46,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-28 13:17:46,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 13:17:46,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 13:17:46,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-28 13:17:46,638 INFO L87 Difference]: Start difference. First operand 15385 states and 21885 transitions. Second operand 8 states. [2018-11-28 13:17:46,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:46,946 INFO L93 Difference]: Finished difference Result 22701 states and 32845 transitions. [2018-11-28 13:17:46,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 13:17:46,947 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2018-11-28 13:17:46,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:46,962 INFO L225 Difference]: With dead ends: 22701 [2018-11-28 13:17:46,963 INFO L226 Difference]: Without dead ends: 22699 [2018-11-28 13:17:46,966 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-28 13:17:46,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22699 states. [2018-11-28 13:17:47,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22699 to 18977. [2018-11-28 13:17:47,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18977 states. [2018-11-28 13:17:47,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18977 states to 18977 states and 26868 transitions. [2018-11-28 13:17:47,287 INFO L78 Accepts]: Start accepts. Automaton has 18977 states and 26868 transitions. Word has length 58 [2018-11-28 13:17:47,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:47,288 INFO L480 AbstractCegarLoop]: Abstraction has 18977 states and 26868 transitions. [2018-11-28 13:17:47,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 13:17:47,288 INFO L276 IsEmpty]: Start isEmpty. Operand 18977 states and 26868 transitions. [2018-11-28 13:17:47,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-28 13:17:47,289 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:47,289 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:47,290 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:47,290 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:47,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1695921494, now seen corresponding path program 7 times [2018-11-28 13:17:47,290 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:47,290 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:47,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:47,291 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:17:47,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:47,343 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:47,343 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:47,343 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:47,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:17:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:47,376 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:47,382 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:47,407 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:47,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-28 13:17:47,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 13:17:47,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 13:17:47,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-28 13:17:47,407 INFO L87 Difference]: Start difference. First operand 18977 states and 26868 transitions. Second operand 10 states. [2018-11-28 13:17:47,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:47,863 INFO L93 Difference]: Finished difference Result 26255 states and 37782 transitions. [2018-11-28 13:17:47,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 13:17:47,863 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 60 [2018-11-28 13:17:47,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:47,885 INFO L225 Difference]: With dead ends: 26255 [2018-11-28 13:17:47,885 INFO L226 Difference]: Without dead ends: 26253 [2018-11-28 13:17:47,890 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 [2018-11-28 13:17:47,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26253 states. [2018-11-28 13:17:48,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26253 to 22315. [2018-11-28 13:17:48,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22315 states. [2018-11-28 13:17:48,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22315 states to 22315 states and 31477 transitions. [2018-11-28 13:17:48,314 INFO L78 Accepts]: Start accepts. Automaton has 22315 states and 31477 transitions. Word has length 60 [2018-11-28 13:17:48,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:48,314 INFO L480 AbstractCegarLoop]: Abstraction has 22315 states and 31477 transitions. [2018-11-28 13:17:48,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 13:17:48,314 INFO L276 IsEmpty]: Start isEmpty. Operand 22315 states and 31477 transitions. [2018-11-28 13:17:48,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-11-28 13:17:48,315 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:48,315 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:48,315 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:48,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:48,316 INFO L82 PathProgramCache]: Analyzing trace with hash 2090391817, now seen corresponding path program 5 times [2018-11-28 13:17:48,316 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:48,316 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:48,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:48,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:17:48,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:48,374 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:48,374 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:48,374 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:48,380 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:17:48,391 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-11-28 13:17:48,392 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:17:48,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:48,397 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:48,411 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:48,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-28 13:17:48,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 13:17:48,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 13:17:48,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-28 13:17:48,412 INFO L87 Difference]: Start difference. First operand 22315 states and 31477 transitions. Second operand 9 states. [2018-11-28 13:17:48,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:48,769 INFO L93 Difference]: Finished difference Result 32959 states and 46936 transitions. [2018-11-28 13:17:48,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 13:17:48,769 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2018-11-28 13:17:48,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:48,793 INFO L225 Difference]: With dead ends: 32959 [2018-11-28 13:17:48,794 INFO L226 Difference]: Without dead ends: 32958 [2018-11-28 13:17:48,800 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-28 13:17:48,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32958 states. [2018-11-28 13:17:49,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32958 to 23709. [2018-11-28 13:17:49,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23709 states. [2018-11-28 13:17:49,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23709 states to 23709 states and 33466 transitions. [2018-11-28 13:17:49,314 INFO L78 Accepts]: Start accepts. Automaton has 23709 states and 33466 transitions. Word has length 61 [2018-11-28 13:17:49,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:49,315 INFO L480 AbstractCegarLoop]: Abstraction has 23709 states and 33466 transitions. [2018-11-28 13:17:49,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 13:17:49,315 INFO L276 IsEmpty]: Start isEmpty. Operand 23709 states and 33466 transitions. [2018-11-28 13:17:49,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-11-28 13:17:49,317 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:49,317 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:49,317 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:49,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:49,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1521886379, now seen corresponding path program 4 times [2018-11-28 13:17:49,317 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:49,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:49,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:49,318 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:17:49,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:49,375 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:49,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:49,376 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:49,385 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:17:49,394 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:17:49,395 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:17:49,396 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:49,403 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:49,427 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:49,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-28 13:17:49,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 13:17:49,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 13:17:49,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-28 13:17:49,427 INFO L87 Difference]: Start difference. First operand 23709 states and 33466 transitions. Second operand 8 states. [2018-11-28 13:17:49,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:49,825 INFO L93 Difference]: Finished difference Result 33673 states and 48022 transitions. [2018-11-28 13:17:49,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 13:17:49,825 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2018-11-28 13:17:49,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:49,851 INFO L225 Difference]: With dead ends: 33673 [2018-11-28 13:17:49,851 INFO L226 Difference]: Without dead ends: 33672 [2018-11-28 13:17:49,857 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-28 13:17:49,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33672 states. [2018-11-28 13:17:50,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33672 to 25273. [2018-11-28 13:17:50,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25273 states. [2018-11-28 13:17:50,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25273 states to 25273 states and 35688 transitions. [2018-11-28 13:17:50,330 INFO L78 Accepts]: Start accepts. Automaton has 25273 states and 35688 transitions. Word has length 65 [2018-11-28 13:17:50,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:50,330 INFO L480 AbstractCegarLoop]: Abstraction has 25273 states and 35688 transitions. [2018-11-28 13:17:50,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 13:17:50,330 INFO L276 IsEmpty]: Start isEmpty. Operand 25273 states and 35688 transitions. [2018-11-28 13:17:50,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-28 13:17:50,333 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:50,333 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:50,333 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:50,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:50,333 INFO L82 PathProgramCache]: Analyzing trace with hash -690121846, now seen corresponding path program 8 times [2018-11-28 13:17:50,333 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:50,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:50,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:50,334 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:17:50,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:50,462 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:50,462 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:50,462 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:50,472 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:17:50,491 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:17:50,491 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:17:50,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:50,500 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:50,525 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:50,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-28 13:17:50,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 13:17:50,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 13:17:50,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-28 13:17:50,526 INFO L87 Difference]: Start difference. First operand 25273 states and 35688 transitions. Second operand 11 states. [2018-11-28 13:17:51,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:51,227 INFO L93 Difference]: Finished difference Result 34134 states and 48972 transitions. [2018-11-28 13:17:51,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 13:17:51,227 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2018-11-28 13:17:51,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:51,250 INFO L225 Difference]: With dead ends: 34134 [2018-11-28 13:17:51,250 INFO L226 Difference]: Without dead ends: 34132 [2018-11-28 13:17:51,254 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-28 13:17:51,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34132 states. [2018-11-28 13:17:51,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34132 to 29349. [2018-11-28 13:17:51,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29349 states. [2018-11-28 13:17:51,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29349 states to 29349 states and 41310 transitions. [2018-11-28 13:17:51,770 INFO L78 Accepts]: Start accepts. Automaton has 29349 states and 41310 transitions. Word has length 67 [2018-11-28 13:17:51,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:51,770 INFO L480 AbstractCegarLoop]: Abstraction has 29349 states and 41310 transitions. [2018-11-28 13:17:51,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 13:17:51,770 INFO L276 IsEmpty]: Start isEmpty. Operand 29349 states and 41310 transitions. [2018-11-28 13:17:51,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-28 13:17:51,772 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:51,772 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:51,772 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:51,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:51,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1044856365, now seen corresponding path program 6 times [2018-11-28 13:17:51,772 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:51,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:51,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:51,773 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:17:51,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:51,818 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:51,819 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:51,819 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:51,830 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:17:51,857 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-28 13:17:51,857 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:17:51,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:51,863 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:51,877 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:51,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-28 13:17:51,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 13:17:51,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 13:17:51,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-28 13:17:51,877 INFO L87 Difference]: Start difference. First operand 29349 states and 41310 transitions. Second operand 9 states. [2018-11-28 13:17:52,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:52,327 INFO L93 Difference]: Finished difference Result 41884 states and 59975 transitions. [2018-11-28 13:17:52,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 13:17:52,327 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2018-11-28 13:17:52,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:52,359 INFO L225 Difference]: With dead ends: 41884 [2018-11-28 13:17:52,359 INFO L226 Difference]: Without dead ends: 41882 [2018-11-28 13:17:52,367 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-28 13:17:52,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41882 states. [2018-11-28 13:17:53,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41882 to 35469. [2018-11-28 13:17:53,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35469 states. [2018-11-28 13:17:53,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35469 states to 35469 states and 49722 transitions. [2018-11-28 13:17:53,048 INFO L78 Accepts]: Start accepts. Automaton has 35469 states and 49722 transitions. Word has length 67 [2018-11-28 13:17:53,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:53,048 INFO L480 AbstractCegarLoop]: Abstraction has 35469 states and 49722 transitions. [2018-11-28 13:17:53,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 13:17:53,048 INFO L276 IsEmpty]: Start isEmpty. Operand 35469 states and 49722 transitions. [2018-11-28 13:17:53,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-11-28 13:17:53,050 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:53,051 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:53,051 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:53,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:53,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1351429389, now seen corresponding path program 6 times [2018-11-28 13:17:53,051 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:53,051 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:53,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:53,052 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:17:53,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:53,130 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:53,130 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:53,130 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:53,156 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:17:53,169 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-11-28 13:17:53,169 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:17:53,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:53,175 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:53,189 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:53,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-28 13:17:53,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 13:17:53,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 13:17:53,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-28 13:17:53,190 INFO L87 Difference]: Start difference. First operand 35469 states and 49722 transitions. Second operand 10 states. [2018-11-28 13:17:53,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:53,781 INFO L93 Difference]: Finished difference Result 51133 states and 72401 transitions. [2018-11-28 13:17:53,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 13:17:53,781 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2018-11-28 13:17:53,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:53,825 INFO L225 Difference]: With dead ends: 51133 [2018-11-28 13:17:53,825 INFO L226 Difference]: Without dead ends: 51132 [2018-11-28 13:17:53,834 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-28 13:17:53,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51132 states. [2018-11-28 13:17:54,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51132 to 37265. [2018-11-28 13:17:54,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37265 states. [2018-11-28 13:17:54,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37265 states to 37265 states and 52275 transitions. [2018-11-28 13:17:54,756 INFO L78 Accepts]: Start accepts. Automaton has 37265 states and 52275 transitions. Word has length 69 [2018-11-28 13:17:54,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:54,757 INFO L480 AbstractCegarLoop]: Abstraction has 37265 states and 52275 transitions. [2018-11-28 13:17:54,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 13:17:54,757 INFO L276 IsEmpty]: Start isEmpty. Operand 37265 states and 52275 transitions. [2018-11-28 13:17:54,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-11-28 13:17:54,759 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:54,759 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:54,760 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:54,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:54,760 INFO L82 PathProgramCache]: Analyzing trace with hash -2049109290, now seen corresponding path program 9 times [2018-11-28 13:17:54,760 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:54,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:54,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:54,761 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:17:54,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:54,847 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:54,847 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:54,847 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:54,856 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:17:54,870 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-11-28 13:17:54,870 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:17:54,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:54,875 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:54,889 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:54,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-28 13:17:54,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 13:17:54,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 13:17:54,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-28 13:17:54,890 INFO L87 Difference]: Start difference. First operand 37265 states and 52275 transitions. Second operand 12 states. [2018-11-28 13:17:55,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:55,487 INFO L93 Difference]: Finished difference Result 49303 states and 70258 transitions. [2018-11-28 13:17:55,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 13:17:55,487 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 74 [2018-11-28 13:17:55,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:55,528 INFO L225 Difference]: With dead ends: 49303 [2018-11-28 13:17:55,528 INFO L226 Difference]: Without dead ends: 49301 [2018-11-28 13:17:55,536 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-28 13:17:55,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49301 states. [2018-11-28 13:17:56,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49301 to 42817. [2018-11-28 13:17:56,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42817 states. [2018-11-28 13:17:56,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42817 states to 42817 states and 59893 transitions. [2018-11-28 13:17:56,324 INFO L78 Accepts]: Start accepts. Automaton has 42817 states and 59893 transitions. Word has length 74 [2018-11-28 13:17:56,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:56,324 INFO L480 AbstractCegarLoop]: Abstraction has 42817 states and 59893 transitions. [2018-11-28 13:17:56,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 13:17:56,324 INFO L276 IsEmpty]: Start isEmpty. Operand 42817 states and 59893 transitions. [2018-11-28 13:17:56,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-11-28 13:17:56,327 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:56,327 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:56,327 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:56,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:56,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1528834600, now seen corresponding path program 5 times [2018-11-28 13:17:56,327 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:56,327 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:56,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:56,328 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:17:56,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:56,375 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:56,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:56,375 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:56,382 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:17:56,393 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-11-28 13:17:56,393 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:17:56,394 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:56,399 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:56,413 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:56,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-28 13:17:56,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 13:17:56,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 13:17:56,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-28 13:17:56,414 INFO L87 Difference]: Start difference. First operand 42817 states and 59893 transitions. Second operand 9 states. [2018-11-28 13:17:57,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:57,146 INFO L93 Difference]: Finished difference Result 59106 states and 83567 transitions. [2018-11-28 13:17:57,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 13:17:57,146 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2018-11-28 13:17:57,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:57,194 INFO L225 Difference]: With dead ends: 59106 [2018-11-28 13:17:57,194 INFO L226 Difference]: Without dead ends: 59105 [2018-11-28 13:17:57,203 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-28 13:17:57,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59105 states. [2018-11-28 13:17:58,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59105 to 45009. [2018-11-28 13:17:58,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45009 states. [2018-11-28 13:17:58,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45009 states to 45009 states and 62991 transitions. [2018-11-28 13:17:58,057 INFO L78 Accepts]: Start accepts. Automaton has 45009 states and 62991 transitions. Word has length 75 [2018-11-28 13:17:58,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:17:58,057 INFO L480 AbstractCegarLoop]: Abstraction has 45009 states and 62991 transitions. [2018-11-28 13:17:58,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 13:17:58,057 INFO L276 IsEmpty]: Start isEmpty. Operand 45009 states and 62991 transitions. [2018-11-28 13:17:58,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-11-28 13:17:58,060 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:17:58,060 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2018-11-28 13:17:58,060 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:17:58,060 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:17:58,061 INFO L82 PathProgramCache]: Analyzing trace with hash -427799768, now seen corresponding path program 7 times [2018-11-28 13:17:58,061 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:17:58,061 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:17:58,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:58,061 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:17:58,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:17:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:58,118 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:58,118 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:17:58,118 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:17:58,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:17:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:17:58,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:17:58,144 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:17:58,159 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:17:58,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-28 13:17:58,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 13:17:58,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 13:17:58,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-28 13:17:58,160 INFO L87 Difference]: Start difference. First operand 45009 states and 62991 transitions. Second operand 10 states. [2018-11-28 13:17:58,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:17:58,893 INFO L93 Difference]: Finished difference Result 62469 states and 88924 transitions. [2018-11-28 13:17:58,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 13:17:58,894 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 76 [2018-11-28 13:17:58,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:17:58,951 INFO L225 Difference]: With dead ends: 62469 [2018-11-28 13:17:58,951 INFO L226 Difference]: Without dead ends: 62467 [2018-11-28 13:17:58,962 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 [2018-11-28 13:17:59,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62467 states. [2018-11-28 13:18:00,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62467 to 53493. [2018-11-28 13:18:00,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53493 states. [2018-11-28 13:18:00,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53493 states to 53493 states and 74602 transitions. [2018-11-28 13:18:00,143 INFO L78 Accepts]: Start accepts. Automaton has 53493 states and 74602 transitions. Word has length 76 [2018-11-28 13:18:00,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:18:00,144 INFO L480 AbstractCegarLoop]: Abstraction has 53493 states and 74602 transitions. [2018-11-28 13:18:00,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 13:18:00,144 INFO L276 IsEmpty]: Start isEmpty. Operand 53493 states and 74602 transitions. [2018-11-28 13:18:00,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-11-28 13:18:00,147 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:18:00,147 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1] [2018-11-28 13:18:00,147 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:18:00,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:18:00,147 INFO L82 PathProgramCache]: Analyzing trace with hash 265372381, now seen corresponding path program 7 times [2018-11-28 13:18:00,147 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:18:00,148 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:18:00,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:18:00,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:18:00,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:18:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:18:00,228 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:18:00,228 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:18:00,229 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:18:00,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:18:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:18:00,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:18:00,272 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:18:00,298 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:18:00,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-28 13:18:00,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 13:18:00,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 13:18:00,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-28 13:18:00,299 INFO L87 Difference]: Start difference. First operand 53493 states and 74602 transitions. Second operand 11 states. [2018-11-28 13:18:01,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:18:01,213 INFO L93 Difference]: Finished difference Result 75502 states and 106384 transitions. [2018-11-28 13:18:01,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 13:18:01,214 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 77 [2018-11-28 13:18:01,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:18:01,278 INFO L225 Difference]: With dead ends: 75502 [2018-11-28 13:18:01,278 INFO L226 Difference]: Without dead ends: 75501 [2018-11-28 13:18:01,290 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-28 13:18:01,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75501 states. [2018-11-28 13:18:02,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75501 to 55737. [2018-11-28 13:18:02,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55737 states. [2018-11-28 13:18:02,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55737 states to 55737 states and 77782 transitions. [2018-11-28 13:18:02,585 INFO L78 Accepts]: Start accepts. Automaton has 55737 states and 77782 transitions. Word has length 77 [2018-11-28 13:18:02,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:18:02,586 INFO L480 AbstractCegarLoop]: Abstraction has 55737 states and 77782 transitions. [2018-11-28 13:18:02,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 13:18:02,586 INFO L276 IsEmpty]: Start isEmpty. Operand 55737 states and 77782 transitions. [2018-11-28 13:18:02,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-11-28 13:18:02,590 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:18:02,590 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1] [2018-11-28 13:18:02,590 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:18:02,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:18:02,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1444546058, now seen corresponding path program 10 times [2018-11-28 13:18:02,590 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:18:02,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:18:02,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:18:02,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:18:02,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:18:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:18:02,679 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:18:02,679 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:18:02,679 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:18:02,686 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:18:02,698 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:18:02,698 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:18:02,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:18:02,704 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:18:02,718 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:18:02,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-11-28 13:18:02,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 13:18:02,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 13:18:02,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-11-28 13:18:02,719 INFO L87 Difference]: Start difference. First operand 55737 states and 77782 transitions. Second operand 13 states. [2018-11-28 13:18:03,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:18:03,565 INFO L93 Difference]: Finished difference Result 72432 states and 102654 transitions. [2018-11-28 13:18:03,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-28 13:18:03,566 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2018-11-28 13:18:03,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:18:03,629 INFO L225 Difference]: With dead ends: 72432 [2018-11-28 13:18:03,629 INFO L226 Difference]: Without dead ends: 72430 [2018-11-28 13:18:03,641 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-11-28 13:18:03,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72430 states. [2018-11-28 13:18:04,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72430 to 63455. [2018-11-28 13:18:04,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63455 states. [2018-11-28 13:18:04,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63455 states to 63455 states and 88331 transitions. [2018-11-28 13:18:04,880 INFO L78 Accepts]: Start accepts. Automaton has 63455 states and 88331 transitions. Word has length 81 [2018-11-28 13:18:04,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:18:04,880 INFO L480 AbstractCegarLoop]: Abstraction has 63455 states and 88331 transitions. [2018-11-28 13:18:04,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 13:18:04,880 INFO L276 IsEmpty]: Start isEmpty. Operand 63455 states and 88331 transitions. [2018-11-28 13:18:04,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-11-28 13:18:04,884 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:18:04,884 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2018-11-28 13:18:04,885 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:18:04,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:18:04,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1692281031, now seen corresponding path program 8 times [2018-11-28 13:18:04,885 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:18:04,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:18:04,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:18:04,886 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:18:04,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:18:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:18:04,962 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:18:04,962 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:18:04,962 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:18:04,983 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:18:04,997 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:18:04,997 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:18:04,998 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:18:05,005 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:18:05,020 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:18:05,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-28 13:18:05,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 13:18:05,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 13:18:05,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-28 13:18:05,021 INFO L87 Difference]: Start difference. First operand 63455 states and 88331 transitions. Second operand 12 states. [2018-11-28 13:18:06,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:18:06,277 INFO L93 Difference]: Finished difference Result 87915 states and 123650 transitions. [2018-11-28 13:18:06,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 13:18:06,277 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 85 [2018-11-28 13:18:06,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:18:06,350 INFO L225 Difference]: With dead ends: 87915 [2018-11-28 13:18:06,350 INFO L226 Difference]: Without dead ends: 87914 [2018-11-28 13:18:06,362 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 [2018-11-28 13:18:06,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87914 states. [2018-11-28 13:18:07,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87914 to 65699. [2018-11-28 13:18:07,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65699 states. [2018-11-28 13:18:07,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65699 states to 65699 states and 91511 transitions. [2018-11-28 13:18:07,738 INFO L78 Accepts]: Start accepts. Automaton has 65699 states and 91511 transitions. Word has length 85 [2018-11-28 13:18:07,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:18:07,738 INFO L480 AbstractCegarLoop]: Abstraction has 65699 states and 91511 transitions. [2018-11-28 13:18:07,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 13:18:07,739 INFO L276 IsEmpty]: Start isEmpty. Operand 65699 states and 91511 transitions. [2018-11-28 13:18:07,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-11-28 13:18:07,743 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:18:07,743 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1] [2018-11-28 13:18:07,743 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:18:07,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:18:07,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1685753485, now seen corresponding path program 8 times [2018-11-28 13:18:07,743 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:18:07,743 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:18:07,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:18:07,744 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:18:07,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:18:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:18:07,803 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:18:07,803 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:18:07,803 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:18:07,809 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:18:07,819 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:18:07,819 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:18:07,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:18:07,826 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:18:07,841 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:18:07,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-28 13:18:07,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 13:18:07,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 13:18:07,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-28 13:18:07,841 INFO L87 Difference]: Start difference. First operand 65699 states and 91511 transitions. Second operand 11 states. [2018-11-28 13:18:08,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:18:08,908 INFO L93 Difference]: Finished difference Result 88656 states and 125565 transitions. [2018-11-28 13:18:08,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 13:18:08,908 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 85 [2018-11-28 13:18:08,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:18:08,984 INFO L225 Difference]: With dead ends: 88656 [2018-11-28 13:18:08,984 INFO L226 Difference]: Without dead ends: 88654 [2018-11-28 13:18:09,000 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-28 13:18:09,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88654 states. [2018-11-28 13:18:10,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88654 to 76293. [2018-11-28 13:18:10,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76293 states. [2018-11-28 13:18:10,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76293 states to 76293 states and 105928 transitions. [2018-11-28 13:18:10,616 INFO L78 Accepts]: Start accepts. Automaton has 76293 states and 105928 transitions. Word has length 85 [2018-11-28 13:18:10,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:18:10,617 INFO L480 AbstractCegarLoop]: Abstraction has 76293 states and 105928 transitions. [2018-11-28 13:18:10,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 13:18:10,617 INFO L276 IsEmpty]: Start isEmpty. Operand 76293 states and 105928 transitions. [2018-11-28 13:18:10,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-11-28 13:18:10,621 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:18:10,621 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1] [2018-11-28 13:18:10,621 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:18:10,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:18:10,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1536406213, now seen corresponding path program 6 times [2018-11-28 13:18:10,621 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:18:10,621 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:18:10,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:18:10,622 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:18:10,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:18:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:18:10,673 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:18:10,673 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:18:10,673 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:18:10,679 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:18:10,691 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-11-28 13:18:10,691 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:18:10,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:18:10,699 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:18:10,713 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:18:10,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-28 13:18:10,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 13:18:10,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 13:18:10,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-28 13:18:10,713 INFO L87 Difference]: Start difference. First operand 76293 states and 105928 transitions. Second operand 10 states. [2018-11-28 13:18:11,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:18:11,990 INFO L93 Difference]: Finished difference Result 109927 states and 154225 transitions. [2018-11-28 13:18:11,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 13:18:11,990 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2018-11-28 13:18:11,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:18:12,093 INFO L225 Difference]: With dead ends: 109927 [2018-11-28 13:18:12,093 INFO L226 Difference]: Without dead ends: 109926 [2018-11-28 13:18:12,113 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-28 13:18:12,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109926 states. [2018-11-28 13:18:14,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109926 to 80157. [2018-11-28 13:18:14,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80157 states. [2018-11-28 13:18:14,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80157 states to 80157 states and 111367 transitions. [2018-11-28 13:18:14,139 INFO L78 Accepts]: Start accepts. Automaton has 80157 states and 111367 transitions. Word has length 85 [2018-11-28 13:18:14,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:18:14,139 INFO L480 AbstractCegarLoop]: Abstraction has 80157 states and 111367 transitions. [2018-11-28 13:18:14,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 13:18:14,139 INFO L276 IsEmpty]: Start isEmpty. Operand 80157 states and 111367 transitions. [2018-11-28 13:18:14,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-11-28 13:18:14,144 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:18:14,144 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1] [2018-11-28 13:18:14,144 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:18:14,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:18:14,144 INFO L82 PathProgramCache]: Analyzing trace with hash -508374954, now seen corresponding path program 11 times [2018-11-28 13:18:14,144 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:18:14,144 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:18:14,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:18:14,145 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:18:14,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:18:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:18:14,238 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 451 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:18:14,238 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:18:14,238 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:18:14,246 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:18:14,266 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-11-28 13:18:14,266 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:18:14,267 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:18:14,433 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 446 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-28 13:18:14,450 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 13:18:14,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 25 [2018-11-28 13:18:14,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-28 13:18:14,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-28 13:18:14,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-11-28 13:18:14,450 INFO L87 Difference]: Start difference. First operand 80157 states and 111367 transitions. Second operand 25 states. [2018-11-28 13:18:15,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:18:15,707 INFO L93 Difference]: Finished difference Result 99235 states and 136781 transitions. [2018-11-28 13:18:15,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-11-28 13:18:15,707 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 88 [2018-11-28 13:18:15,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:18:15,708 INFO L225 Difference]: With dead ends: 99235 [2018-11-28 13:18:15,708 INFO L226 Difference]: Without dead ends: 501 [2018-11-28 13:18:15,765 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2402 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=2313, Invalid=5877, Unknown=0, NotChecked=0, Total=8190 [2018-11-28 13:18:15,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2018-11-28 13:18:15,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 310. [2018-11-28 13:18:15,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2018-11-28 13:18:15,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 348 transitions. [2018-11-28 13:18:15,773 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 348 transitions. Word has length 88 [2018-11-28 13:18:15,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:18:15,773 INFO L480 AbstractCegarLoop]: Abstraction has 310 states and 348 transitions. [2018-11-28 13:18:15,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-28 13:18:15,773 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 348 transitions. [2018-11-28 13:18:15,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-11-28 13:18:15,774 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:18:15,774 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1] [2018-11-28 13:18:15,774 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:18:15,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:18:15,774 INFO L82 PathProgramCache]: Analyzing trace with hash 879701896, now seen corresponding path program 9 times [2018-11-28 13:18:15,774 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:18:15,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:18:15,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:18:15,775 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:18:15,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:18:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:18:15,850 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:18:15,850 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:18:15,850 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:18:15,857 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:18:15,873 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-11-28 13:18:15,873 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:18:15,875 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:18:15,881 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:18:15,896 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:18:15,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-28 13:18:15,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 13:18:15,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 13:18:15,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-28 13:18:15,897 INFO L87 Difference]: Start difference. First operand 310 states and 348 transitions. Second operand 12 states. [2018-11-28 13:18:15,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:18:15,921 INFO L93 Difference]: Finished difference Result 323 states and 361 transitions. [2018-11-28 13:18:15,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 13:18:15,921 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2018-11-28 13:18:15,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:18:15,922 INFO L225 Difference]: With dead ends: 323 [2018-11-28 13:18:15,922 INFO L226 Difference]: Without dead ends: 246 [2018-11-28 13:18:15,922 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-28 13:18:15,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-11-28 13:18:15,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 226. [2018-11-28 13:18:15,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-11-28 13:18:15,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 264 transitions. [2018-11-28 13:18:15,928 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 264 transitions. Word has length 94 [2018-11-28 13:18:15,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:18:15,928 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 264 transitions. [2018-11-28 13:18:15,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 13:18:15,928 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 264 transitions. [2018-11-28 13:18:15,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-11-28 13:18:15,929 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:18:15,929 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1] [2018-11-28 13:18:15,929 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:18:15,929 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:18:15,929 INFO L82 PathProgramCache]: Analyzing trace with hash 270660750, now seen corresponding path program 7 times [2018-11-28 13:18:15,929 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:18:15,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:18:15,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:18:15,930 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:18:15,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:18:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:18:15,983 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:18:15,983 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:18:15,983 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:18:15,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:18:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:18:16,001 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:18:16,014 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:18:16,029 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:18:16,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-28 13:18:16,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 13:18:16,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 13:18:16,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-28 13:18:16,029 INFO L87 Difference]: Start difference. First operand 226 states and 264 transitions. Second operand 11 states. [2018-11-28 13:18:16,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:18:16,058 INFO L93 Difference]: Finished difference Result 247 states and 284 transitions. [2018-11-28 13:18:16,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 13:18:16,058 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 95 [2018-11-28 13:18:16,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:18:16,059 INFO L225 Difference]: With dead ends: 247 [2018-11-28 13:18:16,059 INFO L226 Difference]: Without dead ends: 106 [2018-11-28 13:18:16,059 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-28 13:18:16,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-11-28 13:18:16,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-11-28 13:18:16,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-11-28 13:18:16,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 105 transitions. [2018-11-28 13:18:16,062 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 105 transitions. Word has length 95 [2018-11-28 13:18:16,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:18:16,062 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 105 transitions. [2018-11-28 13:18:16,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 13:18:16,062 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 105 transitions. [2018-11-28 13:18:16,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-11-28 13:18:16,062 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:18:16,062 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2018-11-28 13:18:16,063 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:18:16,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:18:16,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1806118879, now seen corresponding path program 8 times [2018-11-28 13:18:16,063 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:18:16,063 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:18:16,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:18:16,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:18:16,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:18:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:18:16,139 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:18:16,139 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:18:16,139 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:18:16,146 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:18:16,160 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:18:16,161 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:18:16,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:18:16,171 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:18:16,186 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:18:16,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-28 13:18:16,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 13:18:16,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 13:18:16,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-28 13:18:16,187 INFO L87 Difference]: Start difference. First operand 106 states and 105 transitions. Second operand 12 states. [2018-11-28 13:18:16,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:18:16,201 INFO L93 Difference]: Finished difference Result 106 states and 105 transitions. [2018-11-28 13:18:16,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 13:18:16,201 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 105 [2018-11-28 13:18:16,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:18:16,201 INFO L225 Difference]: With dead ends: 106 [2018-11-28 13:18:16,201 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 13:18:16,202 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 [2018-11-28 13:18:16,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 13:18:16,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 13:18:16,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 13:18:16,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 13:18:16,202 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 105 [2018-11-28 13:18:16,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:18:16,202 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 13:18:16,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 13:18:16,202 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 13:18:16,202 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 13:18:16,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 13:18:16,924 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:16,927 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:16,985 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:17,014 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:17,029 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:17,043 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:17,092 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:17,100 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:17,130 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:17,269 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:17,422 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:17,598 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:17,629 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:17,678 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:17,678 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:17,678 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:17,975 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:18,007 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:18,040 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:18,066 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:18,079 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:18,087 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:18,548 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:18,623 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:18,676 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:18,733 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:18,806 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:18,900 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:18,912 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:19,823 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:20,384 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:20,621 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:24,549 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:25,807 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:26,087 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:27,333 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:27,848 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:28,459 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:28,587 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:28,889 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:28,908 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:29,330 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:29,366 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:29,506 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:30,037 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:30,123 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:32,270 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:33,150 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:36,769 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:36,870 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:38,141 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:41,450 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:42,148 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:42,288 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:44,634 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:45,237 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:46,755 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:47,989 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:50,333 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:18:55,759 WARN L180 SmtUtils]: Spent 39.54 s on a formula simplification. DAG size of input: 4688 DAG size of output: 2713 [2018-11-28 13:19:53,959 WARN L180 SmtUtils]: Spent 58.18 s on a formula simplification. DAG size of input: 2296 DAG size of output: 370 [2018-11-28 13:19:53,963 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 13:19:53,963 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 13:19:53,963 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 13:19:53,963 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 13:19:53,963 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 13:19:53,963 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 13:19:53,963 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-11-28 13:19:53,963 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-28 13:19:53,963 INFO L448 ceAbstractionStarter]: For program point L27(lines 27 31) no Hoare annotation was computed. [2018-11-28 13:19:53,963 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 13 35) no Hoare annotation was computed. [2018-11-28 13:19:53,963 INFO L448 ceAbstractionStarter]: For program point L23(lines 23 31) no Hoare annotation was computed. [2018-11-28 13:19:53,963 INFO L448 ceAbstractionStarter]: For program point L19-2(lines 19 33) no Hoare annotation was computed. [2018-11-28 13:19:53,963 INFO L448 ceAbstractionStarter]: For program point mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 30) no Hoare annotation was computed. [2018-11-28 13:19:53,963 INFO L448 ceAbstractionStarter]: For program point mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2018-11-28 13:19:53,963 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-11-28 13:19:53,964 INFO L448 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2018-11-28 13:19:53,964 INFO L448 ceAbstractionStarter]: For program point L28-1(line 28) no Hoare annotation was computed. [2018-11-28 13:19:53,964 INFO L448 ceAbstractionStarter]: For program point mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2018-11-28 13:19:53,964 INFO L448 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-11-28 13:19:53,964 INFO L448 ceAbstractionStarter]: For program point L24-1(line 24) no Hoare annotation was computed. [2018-11-28 13:19:53,964 INFO L448 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-11-28 13:19:53,964 INFO L448 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-11-28 13:19:53,964 INFO L448 ceAbstractionStarter]: For program point mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 30) no Hoare annotation was computed. [2018-11-28 13:19:53,964 INFO L448 ceAbstractionStarter]: For program point mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2018-11-28 13:19:53,964 INFO L448 ceAbstractionStarter]: For program point L29(lines 29 31) no Hoare annotation was computed. [2018-11-28 13:19:53,964 INFO L448 ceAbstractionStarter]: For program point L25(lines 25 31) no Hoare annotation was computed. [2018-11-28 13:19:53,964 INFO L448 ceAbstractionStarter]: For program point mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2018-11-28 13:19:53,964 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 13 35) no Hoare annotation was computed. [2018-11-28 13:19:53,964 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-28 13:19:53,964 INFO L448 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2018-11-28 13:19:53,964 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 13 35) the Hoare annotation is: true [2018-11-28 13:19:53,964 INFO L448 ceAbstractionStarter]: For program point L30-1(line 30) no Hoare annotation was computed. [2018-11-28 13:19:53,964 INFO L448 ceAbstractionStarter]: For program point L26(line 26) no Hoare annotation was computed. [2018-11-28 13:19:53,964 INFO L448 ceAbstractionStarter]: For program point L26-1(line 26) no Hoare annotation was computed. [2018-11-28 13:19:53,965 INFO L448 ceAbstractionStarter]: For program point L22(lines 22 32) no Hoare annotation was computed. [2018-11-28 13:19:53,966 INFO L444 ceAbstractionStarter]: At program point L22-1(lines 19 33) the Hoare annotation is: (let ((.cse77 (<= 0 (+ main_~x~0 2147483648))) (.cse70 (<= 0 main_~i~0)) (.cse5 (<= main_~N~0 10)) (.cse78 (<= 0 (+ main_~y~0 2147483648)))) (let ((.cse33 (<= main_~x~0 2)) (.cse17 (<= 0 main_~x~0)) (.cse43 (<= main_~x~0 3)) (.cse1 (<= 0 (+ main_~x~0 2))) (.cse19 (and .cse77 .cse70 .cse5 .cse78)) (.cse2 (<= 0 main_~y~0))) (let ((.cse54 (<= 0 (+ main_~y~0 1))) (.cse29 (<= main_~y~0 2)) (.cse22 (<= 0 (+ main_~x~0 4))) (.cse24 (<= 0 (+ main_~y~0 2))) (.cse14 (<= main_~y~0 3)) (.cse28 (and .cse77 .cse70 .cse2 .cse5)) (.cse60 (and .cse1 .cse19)) (.cse40 (and .cse70 .cse5)) (.cse41 (<= 0 (+ main_~x~0 1))) (.cse56 (<= main_~x~0 1)) (.cse67 (and .cse43 .cse70 .cse5)) (.cse42 (<= 0 (+ main_~x~0 5))) (.cse27 (<= 0 (+ main_~x~0 3))) (.cse47 (and .cse70 .cse5 .cse17 .cse78)) (.cse10 (and .cse70 .cse33 .cse5 .cse17 .cse78)) (.cse12 (<= main_~y~0 0)) (.cse64 (and .cse77 .cse70 .cse5)) (.cse4 (<= main_~x~0 0))) (let ((.cse44 (<= 0 (+ main_~x~0 9))) (.cse53 (<= 1 main_~i~0)) (.cse38 (and .cse2 .cse64 .cse4)) (.cse66 (and .cse10 .cse12)) (.cse59 (and .cse43 .cse47)) (.cse34 (and .cse27 .cse19)) (.cse25 (<= main_~x~0 9)) (.cse65 (and .cse42 .cse4 .cse5 .cse78)) (.cse35 (and .cse70 .cse2 .cse4 .cse5 .cse17)) (.cse36 (<= main_~y~0 8)) (.cse55 (<= 0 (+ main_~y~0 7))) (.cse8 (<= main_~y~0 6)) (.cse74 (and .cse2 .cse67)) (.cse49 (and .cse70 .cse56 .cse2 .cse5)) (.cse7 (and .cse40 .cse2 .cse41)) (.cse75 (and .cse60 .cse12)) (.cse51 (and .cse14 .cse28)) (.cse58 (<= 0 (+ main_~y~0 6))) (.cse62 (and .cse77 .cse70 .cse24 .cse4 .cse5)) (.cse21 (<= 0 (+ main_~y~0 3))) (.cse3 (<= main_~y~0 7)) (.cse37 (and .cse27 .cse70 .cse2 .cse5)) (.cse16 (<= main_~y~0 1)) (.cse31 (<= 0 (+ main_~x~0 7))) (.cse11 (<= 6 main_~i~0)) (.cse69 (<= main_~x~0 8)) (.cse50 (<= main_~y~0 5)) (.cse76 (and .cse70 .cse22 .cse4 .cse5 .cse78)) (.cse57 (<= 0 (+ main_~x~0 8))) (.cse71 (and .cse77 .cse70 .cse2 .cse29 .cse4 .cse5)) (.cse48 (<= main_~x~0 6)) (.cse32 (<= 8 main_~i~0)) (.cse18 (<= main_~x~0 5)) (.cse73 (and .cse22 .cse19)) (.cse39 (<= main_~y~0 4)) (.cse45 (<= 0 (+ main_~y~0 5))) (.cse72 (<= 2 main_~i~0)) (.cse52 (<= 4 main_~i~0)) (.cse15 (and .cse1 .cse64)) (.cse68 (and .cse28 .cse14 .cse17)) (.cse26 (<= 10 main_~i~0)) (.cse9 (<= 0 (+ main_~y~0 4))) (.cse13 (<= 5 main_~i~0)) (.cse30 (and .cse77 .cse70 .cse2 .cse4 .cse5)) (.cse61 (<= 3 main_~i~0)) (.cse46 (<= main_~x~0 4)) (.cse6 (<= 7 main_~i~0)) (.cse20 (<= 0 (+ main_~x~0 6))) (.cse23 (and .cse77 .cse54 .cse70 .cse4 .cse5)) (.cse0 (<= 9 main_~i~0)) (.cse63 (<= main_~x~0 7))) (or (and .cse0 (and .cse1 .cse2 .cse3 .cse4 .cse5)) (and .cse6 (and .cse7 .cse8 .cse4)) (and .cse9 .cse10 .cse11 .cse12) (and .cse13 .cse2 .cse14 .cse15 .cse4) (and .cse2 .cse11 .cse16 .cse5 .cse17 .cse18) (and .cse19 .cse0 .cse20 .cse21 .cse4 .cse12) (and .cse22 .cse13 .cse23 .cse12) (and .cse6 .cse19 .cse24 .cse17 .cse12 .cse18) (and .cse25 .cse2 .cse16 .cse5 .cse17 .cse26) (and .cse27 .cse13 .cse28 .cse29 .cse4) (and .cse27 .cse13 .cse19 .cse24 .cse4 .cse12) (and .cse30 .cse6 .cse31 .cse12) (and .cse8 .cse2 .cse32 .cse33 .cse5 .cse17) (and .cse9 .cse6 .cse34 .cse4 .cse12) (and .cse35 .cse32 .cse36) (and .cse2 .cse33 .cse5 .cse17 .cse36 .cse26) (and .cse0 .cse8 .cse37 .cse4) (and .cse6 (and .cse22 .cse14 .cse38)) (and .cse39 .cse13 .cse40 .cse2 .cse41 .cse4) (and .cse9 .cse42 .cse19 .cse0 .cse4 .cse12) (and .cse13 (and .cse43 .cse2 .cse29 .cse5) .cse17) (and .cse23 .cse26 .cse44 .cse12) (and .cse45 .cse0 .cse46 .cse47 .cse12) (and .cse6 .cse48 .cse2 .cse16 .cse5 .cse17) (and .cse49 .cse50 .cse11 .cse17) (and .cse51 .cse0 .cse20 .cse4) (and .cse22 .cse52 .cse30 .cse12) (and (<= main_~x~0 10) .cse2 .cse5 .cse17 .cse26 .cse12) (and .cse53 .cse54 .cse4 .cse5 .cse17 .cse12) (and .cse6 .cse55 .cse4 .cse5 .cse17 .cse12) (and .cse52 .cse49 .cse14 .cse17) (and .cse42 (and .cse28 .cse14 .cse4) .cse32) (and .cse30 .cse26 .cse12) (and .cse7 .cse0 .cse4 .cse36) (and (or (and .cse55 .cse32 .cse41 .cse4 .cse5) (and .cse55 .cse56 .cse32 .cse5 .cse17)) .cse12) (and .cse57 .cse30 .cse32 .cse12) (and .cse0 .cse58 .cse59 .cse12) (and .cse34 .cse0 .cse58 .cse4 .cse12) (and .cse45 .cse32 .cse59 .cse12) (and .cse9 .cse60 .cse11 .cse4 .cse12) (and .cse61 .cse21 .cse4 .cse5 .cse17 .cse12) (and .cse62 .cse6 .cse42 .cse12) (and .cse52 .cse33 .cse24 .cse5 .cse17 .cse12) (and .cse52 .cse2 .cse46 .cse5 .cse17 .cse12) (and .cse0 .cse28 .cse63 .cse29 .cse17) (and .cse9 .cse0 .cse47 .cse12 .cse18) (and .cse7 .cse4 .cse26) (and .cse13 .cse2 .cse14 .cse33 .cse5 .cse17) (and .cse27 .cse2 .cse14 .cse64 .cse11 .cse4) (and .cse13 .cse10 .cse21 .cse12) (and .cse65 .cse2 .cse50 .cse26) (and .cse30 .cse0 .cse44 .cse12) (and .cse53 .cse2 .cse4 .cse16 .cse5 .cse17) (and .cse55 .cse66 .cse0) (and .cse54 .cse43 .cse52 .cse5 .cse17 .cse12) (and .cse6 .cse46 .cse21 .cse47 .cse12) (and .cse2 .cse4 .cse16 .cse5 .cse26 .cse44) (and .cse2 .cse14 .cse67 .cse11 .cse17) (and .cse37 .cse32 .cse50 .cse4) (and .cse54 .cse32 .cse63 .cse5 .cse17 .cse12) (and .cse54 .cse33 .cse61 .cse5 .cse17 .cse12) (and .cse1 .cse19 .cse52 .cse24 .cse4 .cse12) (and .cse35 .cse0 (<= main_~y~0 9)) (and .cse0 .cse2 .cse3 .cse33 .cse5 .cse17) (and .cse13 .cse2 .cse46 .cse16 .cse5 .cse17) (and .cse9 .cse52 .cse4 .cse5 .cse17 .cse12) (and .cse68 .cse32 .cse18) (and .cse32 .cse23 .cse31 .cse12) (and .cse19 .cse48 .cse32 .cse24 .cse17 .cse12) (and (or (and .cse53 .cse56 .cse2 .cse5 .cse17) (and .cse53 .cse2 .cse41 .cse4 .cse5)) .cse12) (and .cse39 .cse28 .cse0 .cse17 .cse18) (and .cse62 .cse0 .cse31 .cse12) (and .cse43 .cse2 .cse61 .cse5 .cse17 .cse12) (and .cse54 .cse0 .cse69 .cse5 .cse17 .cse12) (and .cse52 .cse2 .cse29 .cse33 .cse5 .cse17) (and .cse70 .cse2 .cse4 .cse5 .cse17 .cse12) (and .cse71 .cse20 .cse32) (and .cse13 .cse60 .cse21 .cse4 .cse12) (and .cse45 .cse13 .cse4 .cse5 .cse17 .cse12) (and .cse49 .cse3 .cse32 .cse17) (and .cse39 .cse13 .cse49 .cse17) (and .cse0 (and (and .cse48 .cse47) .cse21) .cse12) (and .cse72 .cse2 .cse33 .cse5 .cse17 .cse12) (and .cse25 .cse54 .cse5 .cse17 .cse26 .cse12) (and .cse9 .cse32 .cse73 .cse4 .cse12) (and .cse35 .cse8 .cse11) (and .cse30 .cse42 .cse13 .cse12) (and .cse8 (and .cse22 .cse38) .cse26) (and .cse6 .cse20 .cse2 .cse4 .cse16 .cse5) (and .cse2 .cse11 (and .cse39 .cse15) .cse4) (and .cse39 .cse28 .cse48 .cse17 .cse26) (and .cse52 .cse40 .cse2 .cse14 .cse41 .cse4) (and .cse8 .cse2 .cse32 .cse15 .cse4) (and .cse9 .cse48 .cse26 .cse47 .cse12) (and .cse0 .cse49 .cse17 .cse36) (and .cse28 .cse69 .cse29 .cse17 .cse26) (and .cse6 .cse2 .cse50 .cse33 .cse5 .cse17) (and .cse11 .cse58 .cse4 .cse5 .cse17 .cse12) (and .cse66 .cse26) (and (or (and .cse6 .cse41 .cse4 .cse5) (and .cse6 .cse56 .cse5 .cse17)) .cse58 .cse12) (and .cse57 .cse0 .cse2 .cse4 .cse16 .cse5) (and .cse6 .cse49 .cse8 .cse17) (and .cse63 .cse21 .cse26 .cse47 .cse12) (and .cse43 .cse11 .cse47 .cse21 .cse12) (and .cse39 .cse6 .cse37 .cse4) (and .cse7 .cse32 .cse3 .cse4) (and .cse9 .cse6 .cse59 .cse12) (and .cse35 .cse14 .cse61) (and .cse39 .cse2 .cse33 .cse11 .cse5 .cse17) (and .cse45 .cse34 .cse32 .cse4 .cse12) (and (and .cse39 .cse28) .cse20 .cse4 .cse26) (and .cse9 .cse32 .cse46 .cse47 .cse12) (and .cse42 .cse2 .cse11 .cse4 .cse16 .cse5) (and .cse28 .cse8 .cse46 .cse17 .cse26) (and .cse13 .cse2 .cse5 .cse17 .cse12 .cse18) (and .cse2 .cse69 .cse32 .cse5 .cse17 .cse12) (and .cse34 .cse11 .cse21 .cse4 .cse12) (and .cse62 .cse20 .cse32 .cse12) (and .cse25 .cse0 .cse2 .cse5 .cse17 .cse12) (and .cse54 .cse13 .cse46 .cse5 .cse17 .cse12) (and .cse54 .cse11 .cse5 .cse17 .cse12 .cse18) (and .cse35 .cse13 .cse50) (and .cse22 .cse13 .cse2 .cse4 .cse16 .cse5) (and .cse6 .cse28 .cse29 .cse17 .cse18) (and .cse19 .cse46 .cse11 .cse24 .cse17 .cse12) (and .cse9 .cse19 .cse20 .cse4 .cse26 .cse12) (and .cse35 .cse6 .cse3) (and .cse2 .cse33 .cse61 .cse16 .cse5 .cse17) (and .cse32 .cse2 .cse63 .cse16 .cse5 .cse17) (and .cse74 .cse3 .cse17 .cse26) (and .cse0 .cse2 .cse69 .cse16 .cse5 .cse17) (and (or (and .cse41 .cse61 .cse4 .cse5) (and .cse56 .cse61 .cse5 .cse17)) .cse24 .cse12) (and .cse27 .cse52 .cse23 .cse12) (and .cse55 .cse0 .cse4 .cse75) (and .cse60 .cse32 .cse58 .cse4 .cse12) (and .cse48 .cse2 .cse11 .cse5 .cse17 .cse12) (and .cse74 .cse32 .cse50 .cse17) (and .cse72 .cse56 .cse2 .cse16 .cse5 .cse17) (and .cse72 .cse24 .cse4 .cse5 .cse17 .cse12) (and .cse28 .cse50 .cse17 .cse26 .cse18) (and .cse19 .cse21 .cse4 .cse31 .cse26 .cse12) (and .cse54 .cse6 .cse48 .cse5 .cse17 .cse12) (and (<= 0 (+ main_~y~0 9)) (or (and .cse56 .cse0 .cse5 .cse17 .cse12) (and .cse0 .cse41 .cse4 .cse5 .cse12))) (and .cse6 .cse45 .cse60 .cse4 .cse12) (and .cse30 .cse20 .cse11 .cse12) (and .cse45 .cse65 .cse26 .cse12) (and .cse39 .cse35 .cse52) (and .cse32 .cse21 .cse47 .cse12 .cse18) (and .cse55 (and .cse43 .cse47 .cse12) .cse26) (and .cse28 .cse46 .cse29 .cse11 .cse17) (and .cse2 .cse15 .cse4 .cse36 .cse26) (and .cse6 .cse22 .cse19 .cse21 .cse4 .cse12) (and .cse55 (and .cse27 .cse5 .cse12) .cse4 .cse26) (and .cse0 .cse8 .cse74 .cse17) (and .cse57 .cse0 .cse23 .cse12) (and .cse40 .cse2 .cse29 .cse41 .cse61 .cse4) (and (or (and .cse45 .cse41 .cse11 .cse4 .cse5) (and .cse45 .cse56 .cse11 .cse5 .cse17)) .cse12) (and .cse32 .cse58 .cse10 .cse12) (and .cse42 .cse19 .cse32 .cse21 .cse4 .cse12) (and .cse6 .cse2 .cse50 .cse15 .cse4) (and .cse62 .cse22 .cse11 .cse12) (and .cse49 .cse17 .cse26) (and .cse7 .cse50 .cse11 .cse4) (and .cse28 .cse0 .cse50 .cse46 .cse17) (and .cse68 .cse0 .cse48) (and .cse1 .cse23 .cse61 .cse12) (and .cse58 .cse73 .cse4 .cse26 .cse12) (and .cse43 .cse52 .cse2 .cse16 .cse5 .cse17) (and .cse4 .cse75 .cse26) (and .cse51 .cse4 .cse31 .cse26) (and (<= 0 (+ main_~y~0 8)) .cse32 .cse4 .cse5 .cse17 .cse12) (and .cse46 .cse58 .cse26 .cse47 .cse12) (and .cse71 .cse0 .cse31) (and .cse42 .cse23 .cse11 .cse12) (and .cse57 .cse62 .cse26 .cse12) (and .cse6 .cse2 .cse63 .cse5 .cse17 .cse12) (and .cse72 .cse2 .cse41 .cse4 .cse16 .cse5) (and (and .cse39 .cse2 .cse76) .cse32) (and (or (and .cse56 .cse52 .cse5 .cse17) (and .cse52 .cse41 .cse4 .cse5)) .cse21 .cse12) (and .cse1 .cse2 .cse61 .cse4 .cse16 .cse5) (and .cse27 .cse52 .cse2 .cse4 .cse16 .cse5) (and .cse3 .cse37 .cse4 .cse26) (and .cse72 .cse2 .cse29 .cse4 .cse5 .cse17) (and .cse56 .cse2 .cse29 .cse61 .cse5 .cse17) (and .cse2 .cse32 .cse4 .cse16 .cse31 .cse5) (and .cse22 .cse2 .cse64 .cse29 .cse11 .cse4) (and (and .cse69 .cse24 .cse5 .cse17) .cse26 .cse12) (and .cse0 .cse2 .cse50 .cse76) (and .cse71 .cse6 .cse42) (and .cse57 .cse26 .cse71) (and .cse48 .cse28 .cse32 .cse29 .cse17) (and .cse39 .cse28 .cse32 .cse46 .cse17) (and .cse6 (and .cse39 .cse43 .cse2 .cse47)) (and .cse43 .cse13 .cse24 .cse47 .cse12) (and .cse45 .cse26 .cse47 .cse12 .cse18) (and .cse45 .cse0 .cse73 .cse4 .cse12) (and .cse1 .cse72 .cse30 .cse12) (and .cse0 (and .cse39 .cse42 .cse5) .cse2 .cse4) (and .cse6 .cse45 .cse10 .cse12) (and (or (and .cse72 .cse54 .cse41 .cse4 .cse5) (and .cse72 .cse54 .cse56 .cse5 .cse17)) .cse12) (and .cse52 .cse2 .cse29 .cse15 .cse4) (and .cse68 .cse63 .cse26) (and .cse9 (or (and .cse13 .cse41 .cse4 .cse5) (and .cse56 .cse13 .cse5 .cse17)) .cse12) (and .cse27 .cse30 .cse61 .cse12) (and .cse6 .cse28 .cse14 .cse46 .cse17) (and .cse6 .cse20 .cse23 .cse12) (and .cse19 .cse0 .cse63 .cse24 .cse17 .cse12)))))) [2018-11-28 13:19:54,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 01:19:54 BoogieIcfgContainer [2018-11-28 13:19:54,013 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 13:19:54,014 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 13:19:54,014 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 13:19:54,014 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 13:19:54,014 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:17:39" (3/4) ... [2018-11-28 13:19:54,020 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 13:19:54,027 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 13:19:54,027 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 13:19:54,030 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-28 13:19:54,030 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-28 13:19:54,032 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 13:19:54,032 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 13:19:54,079 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_aa9b2121-2b2b-44d1-903c-6ef7f675d4af/bin-2019/uautomizer/witness.graphml [2018-11-28 13:19:54,079 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 13:19:54,080 INFO L168 Benchmark]: Toolchain (without parser) took 135420.15 ms. Allocated memory was 1.0 GB in the beginning and 3.7 GB in the end (delta: 2.7 GB). Free memory was 952.2 MB in the beginning and 1.4 GB in the end (delta: -463.2 MB). Peak memory consumption was 2.3 GB. Max. memory is 11.5 GB. [2018-11-28 13:19:54,080 INFO L168 Benchmark]: CDTParser took 0.14 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. [2018-11-28 13:19:54,080 INFO L168 Benchmark]: CACSL2BoogieTranslator took 133.58 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-28 13:19:54,080 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.44 ms. Allocated memory is still 1.0 GB. Free memory is still 941.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:19:54,081 INFO L168 Benchmark]: Boogie Preprocessor took 12.65 ms. Allocated memory is still 1.0 GB. Free memory is still 941.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:19:54,081 INFO L168 Benchmark]: RCFGBuilder took 194.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 941.3 MB in the beginning and 1.1 GB in the end (delta: -184.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:19:54,081 INFO L168 Benchmark]: TraceAbstraction took 134997.47 ms. Allocated memory was 1.2 GB in the beginning and 3.7 GB in the end (delta: 2.6 GB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -289.3 MB). Peak memory consumption was 4.3 GB. Max. memory is 11.5 GB. [2018-11-28 13:19:54,081 INFO L168 Benchmark]: Witness Printer took 65.40 ms. Allocated memory is still 3.7 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:19:54,083 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 133.58 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.44 ms. Allocated memory is still 1.0 GB. Free memory is still 941.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.65 ms. Allocated memory is still 1.0 GB. Free memory is still 941.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 194.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 941.3 MB in the beginning and 1.1 GB in the end (delta: -184.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 134997.47 ms. Allocated memory was 1.2 GB in the beginning and 3.7 GB in the end (delta: 2.6 GB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -289.3 MB). Peak memory consumption was 4.3 GB. Max. memory is 11.5 GB. * Witness Printer took 65.40 ms. Allocated memory is still 3.7 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 30]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 30]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: 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: 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: 20]: 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: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((9 <= i && (((0 <= x + 2 && 0 <= y) && y <= 7) && x <= 0) && N <= 10) || (7 <= i && ((((0 <= i && N <= 10) && 0 <= y) && 0 <= x + 1) && y <= 6) && x <= 0)) || (((0 <= y + 4 && (((0 <= i && x <= 2) && N <= 10) && 0 <= x) && 0 <= y + 2147483648) && 6 <= i) && y <= 0)) || ((((5 <= i && 0 <= y) && y <= 3) && 0 <= x + 2 && (0 <= x + 2147483648 && 0 <= i) && N <= 10) && x <= 0)) || (((((0 <= y && 6 <= i) && y <= 1) && N <= 10) && 0 <= x) && x <= 5)) || ((((((((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 9 <= i) && 0 <= x + 6) && 0 <= y + 3) && x <= 0) && y <= 0)) || (((0 <= x + 4 && 5 <= i) && (((0 <= x + 2147483648 && 0 <= y + 1) && 0 <= i) && x <= 0) && N <= 10) && y <= 0)) || (((((7 <= i && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 2) && 0 <= x) && y <= 0) && x <= 5)) || (((((x <= 9 && 0 <= y) && y <= 1) && N <= 10) && 0 <= x) && 10 <= i)) || ((((0 <= x + 3 && 5 <= i) && ((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && N <= 10) && y <= 2) && x <= 0)) || (((((0 <= x + 3 && 5 <= i) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 2) && x <= 0) && y <= 0)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && x <= 0) && N <= 10) && 7 <= i) && 0 <= x + 7) && y <= 0)) || (((((y <= 6 && 0 <= y) && 8 <= i) && x <= 2) && N <= 10) && 0 <= x)) || ((((0 <= y + 4 && 7 <= i) && 0 <= x + 3 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && y <= 0)) || ((((((0 <= i && 0 <= y) && x <= 0) && N <= 10) && 0 <= x) && 8 <= i) && y <= 8)) || (((((0 <= y && x <= 2) && N <= 10) && 0 <= x) && y <= 8) && 10 <= i)) || (((9 <= i && y <= 6) && ((0 <= x + 3 && 0 <= i) && 0 <= y) && N <= 10) && x <= 0)) || (7 <= i && (0 <= x + 4 && y <= 3) && (0 <= y && (0 <= x + 2147483648 && 0 <= i) && N <= 10) && x <= 0)) || (((((y <= 4 && 5 <= i) && 0 <= i && N <= 10) && 0 <= y) && 0 <= x + 1) && x <= 0)) || (((((0 <= y + 4 && 0 <= x + 5) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 9 <= i) && x <= 0) && y <= 0)) || ((5 <= i && ((x <= 3 && 0 <= y) && y <= 2) && N <= 10) && 0 <= x)) || (((((((0 <= x + 2147483648 && 0 <= y + 1) && 0 <= i) && x <= 0) && N <= 10) && 10 <= i) && 0 <= x + 9) && y <= 0)) || ((((0 <= y + 5 && 9 <= i) && x <= 4) && ((0 <= i && N <= 10) && 0 <= x) && 0 <= y + 2147483648) && y <= 0)) || (((((7 <= i && x <= 6) && 0 <= y) && y <= 1) && N <= 10) && 0 <= x)) || ((((((0 <= i && x <= 1) && 0 <= y) && N <= 10) && y <= 5) && 6 <= i) && 0 <= x)) || ((((y <= 3 && ((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && N <= 10) && 9 <= i) && 0 <= x + 6) && x <= 0)) || (((0 <= x + 4 && 4 <= i) && (((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && x <= 0) && N <= 10) && y <= 0)) || (((((x <= 10 && 0 <= y) && N <= 10) && 0 <= x) && 10 <= i) && y <= 0)) || (((((1 <= i && 0 <= y + 1) && x <= 0) && N <= 10) && 0 <= x) && y <= 0)) || (((((7 <= i && 0 <= y + 7) && x <= 0) && N <= 10) && 0 <= x) && y <= 0)) || (((4 <= i && ((0 <= i && x <= 1) && 0 <= y) && N <= 10) && y <= 3) && 0 <= x)) || ((0 <= x + 5 && ((((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && N <= 10) && y <= 3) && x <= 0) && 8 <= i)) || ((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && x <= 0) && N <= 10) && 10 <= i) && y <= 0)) || ((((((0 <= i && N <= 10) && 0 <= y) && 0 <= x + 1) && 9 <= i) && x <= 0) && y <= 8)) || ((((((0 <= y + 7 && 8 <= i) && 0 <= x + 1) && x <= 0) && N <= 10) || ((((0 <= y + 7 && x <= 1) && 8 <= i) && N <= 10) && 0 <= x)) && y <= 0)) || (((0 <= x + 8 && (((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && x <= 0) && N <= 10) && 8 <= i) && y <= 0)) || (((9 <= i && 0 <= y + 6) && x <= 3 && ((0 <= i && N <= 10) && 0 <= x) && 0 <= y + 2147483648) && y <= 0)) || (((((0 <= x + 3 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 9 <= i) && 0 <= y + 6) && x <= 0) && y <= 0)) || (((0 <= y + 5 && 8 <= i) && x <= 3 && ((0 <= i && N <= 10) && 0 <= x) && 0 <= y + 2147483648) && y <= 0)) || ((((0 <= y + 4 && 0 <= x + 2 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 6 <= i) && x <= 0) && y <= 0)) || (((((3 <= i && 0 <= y + 3) && x <= 0) && N <= 10) && 0 <= x) && y <= 0)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y + 2) && x <= 0) && N <= 10) && 7 <= i) && 0 <= x + 5) && y <= 0)) || (((((4 <= i && x <= 2) && 0 <= y + 2) && N <= 10) && 0 <= x) && y <= 0)) || (((((4 <= i && 0 <= y) && x <= 4) && N <= 10) && 0 <= x) && y <= 0)) || ((((9 <= i && ((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && N <= 10) && x <= 7) && y <= 2) && 0 <= x)) || ((((0 <= y + 4 && 9 <= i) && ((0 <= i && N <= 10) && 0 <= x) && 0 <= y + 2147483648) && y <= 0) && x <= 5)) || (((((0 <= i && N <= 10) && 0 <= y) && 0 <= x + 1) && x <= 0) && 10 <= i)) || (((((5 <= i && 0 <= y) && y <= 3) && x <= 2) && N <= 10) && 0 <= x)) || (((((0 <= x + 3 && 0 <= y) && y <= 3) && (0 <= x + 2147483648 && 0 <= i) && N <= 10) && 6 <= i) && x <= 0)) || (((5 <= i && (((0 <= i && x <= 2) && N <= 10) && 0 <= x) && 0 <= y + 2147483648) && 0 <= y + 3) && y <= 0)) || ((((((0 <= x + 5 && x <= 0) && N <= 10) && 0 <= y + 2147483648) && 0 <= y) && y <= 5) && 10 <= i)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && x <= 0) && N <= 10) && 9 <= i) && 0 <= x + 9) && y <= 0)) || (((((1 <= i && 0 <= y) && x <= 0) && y <= 1) && N <= 10) && 0 <= x)) || ((0 <= y + 7 && ((((0 <= i && x <= 2) && N <= 10) && 0 <= x) && 0 <= y + 2147483648) && y <= 0) && 9 <= i)) || (((((0 <= y + 1 && x <= 3) && 4 <= i) && N <= 10) && 0 <= x) && y <= 0)) || ((((7 <= i && x <= 4) && 0 <= y + 3) && ((0 <= i && N <= 10) && 0 <= x) && 0 <= y + 2147483648) && y <= 0)) || (((((0 <= y && x <= 0) && y <= 1) && N <= 10) && 10 <= i) && 0 <= x + 9)) || ((((0 <= y && y <= 3) && (x <= 3 && 0 <= i) && N <= 10) && 6 <= i) && 0 <= x)) || ((((((0 <= x + 3 && 0 <= i) && 0 <= y) && N <= 10) && 8 <= i) && y <= 5) && x <= 0)) || (((((0 <= y + 1 && 8 <= i) && x <= 7) && N <= 10) && 0 <= x) && y <= 0)) || (((((0 <= y + 1 && x <= 2) && 3 <= i) && N <= 10) && 0 <= x) && y <= 0)) || (((((0 <= x + 2 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 4 <= i) && 0 <= y + 2) && x <= 0) && y <= 0)) || ((((((0 <= i && 0 <= y) && x <= 0) && N <= 10) && 0 <= x) && 9 <= i) && y <= 9)) || (((((9 <= i && 0 <= y) && y <= 7) && x <= 2) && N <= 10) && 0 <= x)) || (((((5 <= i && 0 <= y) && x <= 4) && y <= 1) && N <= 10) && 0 <= x)) || (((((0 <= y + 4 && 4 <= i) && x <= 0) && N <= 10) && 0 <= x) && y <= 0)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && N <= 10) && y <= 3) && 0 <= x) && 8 <= i) && x <= 5)) || (((8 <= i && (((0 <= x + 2147483648 && 0 <= y + 1) && 0 <= i) && x <= 0) && N <= 10) && 0 <= x + 7) && y <= 0)) || ((((((((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 6) && 8 <= i) && 0 <= y + 2) && 0 <= x) && y <= 0)) || ((((((1 <= i && x <= 1) && 0 <= y) && N <= 10) && 0 <= x) || ((((1 <= i && 0 <= y) && 0 <= x + 1) && x <= 0) && N <= 10)) && y <= 0)) || ((((y <= 4 && ((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && N <= 10) && 9 <= i) && 0 <= x) && x <= 5)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y + 2) && x <= 0) && N <= 10) && 9 <= i) && 0 <= x + 7) && y <= 0)) || (((((x <= 3 && 0 <= y) && 3 <= i) && N <= 10) && 0 <= x) && y <= 0)) || (((((0 <= y + 1 && 9 <= i) && x <= 8) && N <= 10) && 0 <= x) && y <= 0)) || (((((4 <= i && 0 <= y) && y <= 2) && x <= 2) && N <= 10) && 0 <= x)) || (((((0 <= i && 0 <= y) && x <= 0) && N <= 10) && 0 <= x) && y <= 0)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && y <= 2) && x <= 0) && N <= 10) && 0 <= x + 6) && 8 <= i)) || ((((5 <= i && 0 <= x + 2 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 3) && x <= 0) && y <= 0)) || (((((0 <= y + 5 && 5 <= i) && x <= 0) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && x <= 1) && 0 <= y) && N <= 10) && y <= 7) && 8 <= i) && 0 <= x)) || (((y <= 4 && 5 <= i) && ((0 <= i && x <= 1) && 0 <= y) && N <= 10) && 0 <= x)) || ((9 <= i && (x <= 6 && ((0 <= i && N <= 10) && 0 <= x) && 0 <= y + 2147483648) && 0 <= y + 3) && y <= 0)) || (((((2 <= i && 0 <= y) && x <= 2) && N <= 10) && 0 <= x) && y <= 0)) || (((((x <= 9 && 0 <= y + 1) && N <= 10) && 0 <= x) && 10 <= i) && y <= 0)) || ((((0 <= y + 4 && 8 <= i) && 0 <= x + 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && y <= 0)) || ((((((0 <= i && 0 <= y) && x <= 0) && N <= 10) && 0 <= x) && y <= 6) && 6 <= i)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && x <= 0) && N <= 10) && 0 <= x + 5) && 5 <= i) && y <= 0)) || ((y <= 6 && 0 <= x + 4 && (0 <= y && (0 <= x + 2147483648 && 0 <= i) && N <= 10) && x <= 0) && 10 <= i)) || (((((7 <= i && 0 <= x + 6) && 0 <= y) && x <= 0) && y <= 1) && N <= 10)) || (((0 <= y && 6 <= i) && y <= 4 && 0 <= x + 2 && (0 <= x + 2147483648 && 0 <= i) && N <= 10) && x <= 0)) || ((((y <= 4 && ((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && N <= 10) && x <= 6) && 0 <= x) && 10 <= i)) || (((((4 <= i && 0 <= i && N <= 10) && 0 <= y) && y <= 3) && 0 <= x + 1) && x <= 0)) || ((((y <= 6 && 0 <= y) && 8 <= i) && 0 <= x + 2 && (0 <= x + 2147483648 && 0 <= i) && N <= 10) && x <= 0)) || ((((0 <= y + 4 && x <= 6) && 10 <= i) && ((0 <= i && N <= 10) && 0 <= x) && 0 <= y + 2147483648) && y <= 0)) || (((9 <= i && ((0 <= i && x <= 1) && 0 <= y) && N <= 10) && 0 <= x) && y <= 8)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && N <= 10) && x <= 8) && y <= 2) && 0 <= x) && 10 <= i)) || (((((7 <= i && 0 <= y) && y <= 5) && x <= 2) && N <= 10) && 0 <= x)) || (((((6 <= i && 0 <= y + 6) && x <= 0) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && x <= 2) && N <= 10) && 0 <= x) && 0 <= y + 2147483648) && y <= 0) && 10 <= i)) || ((((((7 <= i && 0 <= x + 1) && x <= 0) && N <= 10) || (((7 <= i && x <= 1) && N <= 10) && 0 <= x)) && 0 <= y + 6) && y <= 0)) || (((((0 <= x + 8 && 9 <= i) && 0 <= y) && x <= 0) && y <= 1) && N <= 10)) || (((7 <= i && ((0 <= i && x <= 1) && 0 <= y) && N <= 10) && y <= 6) && 0 <= x)) || ((((x <= 7 && 0 <= y + 3) && 10 <= i) && ((0 <= i && N <= 10) && 0 <= x) && 0 <= y + 2147483648) && y <= 0)) || ((((x <= 3 && 6 <= i) && ((0 <= i && N <= 10) && 0 <= x) && 0 <= y + 2147483648) && 0 <= y + 3) && y <= 0)) || (((y <= 4 && 7 <= i) && ((0 <= x + 3 && 0 <= i) && 0 <= y) && N <= 10) && x <= 0)) || ((((((0 <= i && N <= 10) && 0 <= y) && 0 <= x + 1) && 8 <= i) && y <= 7) && x <= 0)) || (((0 <= y + 4 && 7 <= i) && x <= 3 && ((0 <= i && N <= 10) && 0 <= x) && 0 <= y + 2147483648) && y <= 0)) || ((((((0 <= i && 0 <= y) && x <= 0) && N <= 10) && 0 <= x) && y <= 3) && 3 <= i)) || (((((y <= 4 && 0 <= y) && x <= 2) && 6 <= i) && N <= 10) && 0 <= x)) || ((((0 <= y + 5 && 0 <= x + 3 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 8 <= i) && x <= 0) && y <= 0)) || ((((y <= 4 && ((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && N <= 10) && 0 <= x + 6) && x <= 0) && 10 <= i)) || ((((0 <= y + 4 && 8 <= i) && x <= 4) && ((0 <= i && N <= 10) && 0 <= x) && 0 <= y + 2147483648) && y <= 0)) || (((((0 <= x + 5 && 0 <= y) && 6 <= i) && x <= 0) && y <= 1) && N <= 10)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && N <= 10) && y <= 6) && x <= 4) && 0 <= x) && 10 <= i)) || (((((5 <= i && 0 <= y) && N <= 10) && 0 <= x) && y <= 0) && x <= 5)) || (((((0 <= y && x <= 8) && 8 <= i) && N <= 10) && 0 <= x) && y <= 0)) || (((((0 <= x + 3 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 6 <= i) && 0 <= y + 3) && x <= 0) && y <= 0)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y + 2) && x <= 0) && N <= 10) && 0 <= x + 6) && 8 <= i) && y <= 0)) || (((((x <= 9 && 9 <= i) && 0 <= y) && N <= 10) && 0 <= x) && y <= 0)) || (((((0 <= y + 1 && 5 <= i) && x <= 4) && N <= 10) && 0 <= x) && y <= 0)) || (((((0 <= y + 1 && 6 <= i) && N <= 10) && 0 <= x) && y <= 0) && x <= 5)) || ((((((0 <= i && 0 <= y) && x <= 0) && N <= 10) && 0 <= x) && 5 <= i) && y <= 5)) || (((((0 <= x + 4 && 5 <= i) && 0 <= y) && x <= 0) && y <= 1) && N <= 10)) || ((((7 <= i && ((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && N <= 10) && y <= 2) && 0 <= x) && x <= 5)) || ((((((((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 4) && 6 <= i) && 0 <= y + 2) && 0 <= x) && y <= 0)) || (((((0 <= y + 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= x + 6) && x <= 0) && 10 <= i) && y <= 0)) || ((((((0 <= i && 0 <= y) && x <= 0) && N <= 10) && 0 <= x) && 7 <= i) && y <= 7)) || (((((0 <= y && x <= 2) && 3 <= i) && y <= 1) && N <= 10) && 0 <= x)) || (((((8 <= i && 0 <= y) && x <= 7) && y <= 1) && N <= 10) && 0 <= x)) || ((((0 <= y && (x <= 3 && 0 <= i) && N <= 10) && y <= 7) && 0 <= x) && 10 <= i)) || (((((9 <= i && 0 <= y) && x <= 8) && y <= 1) && N <= 10) && 0 <= x)) || ((((((0 <= x + 1 && 3 <= i) && x <= 0) && N <= 10) || (((x <= 1 && 3 <= i) && N <= 10) && 0 <= x)) && 0 <= y + 2) && y <= 0)) || (((0 <= x + 3 && 4 <= i) && (((0 <= x + 2147483648 && 0 <= y + 1) && 0 <= i) && x <= 0) && N <= 10) && y <= 0)) || (((0 <= y + 7 && 9 <= i) && x <= 0) && (0 <= x + 2 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && y <= 0)) || (((((0 <= x + 2 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 8 <= i) && 0 <= y + 6) && x <= 0) && y <= 0)) || (((((x <= 6 && 0 <= y) && 6 <= i) && N <= 10) && 0 <= x) && y <= 0)) || ((((0 <= y && (x <= 3 && 0 <= i) && N <= 10) && 8 <= i) && y <= 5) && 0 <= x)) || (((((2 <= i && x <= 1) && 0 <= y) && y <= 1) && N <= 10) && 0 <= x)) || (((((2 <= i && 0 <= y + 2) && x <= 0) && N <= 10) && 0 <= x) && y <= 0)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && N <= 10) && y <= 5) && 0 <= x) && 10 <= i) && x <= 5)) || ((((((((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 3) && x <= 0) && 0 <= x + 7) && 10 <= i) && y <= 0)) || (((((0 <= y + 1 && 7 <= i) && x <= 6) && N <= 10) && 0 <= x) && y <= 0)) || (0 <= y + 9 && (((((x <= 1 && 9 <= i) && N <= 10) && 0 <= x) && y <= 0) || ((((9 <= i && 0 <= x + 1) && x <= 0) && N <= 10) && y <= 0)))) || ((((7 <= i && 0 <= y + 5) && 0 <= x + 2 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && y <= 0)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && x <= 0) && N <= 10) && 0 <= x + 6) && 6 <= i) && y <= 0)) || (((0 <= y + 5 && ((0 <= x + 5 && x <= 0) && N <= 10) && 0 <= y + 2147483648) && 10 <= i) && y <= 0)) || ((y <= 4 && (((0 <= i && 0 <= y) && x <= 0) && N <= 10) && 0 <= x) && 4 <= i)) || ((((8 <= i && 0 <= y + 3) && ((0 <= i && N <= 10) && 0 <= x) && 0 <= y + 2147483648) && y <= 0) && x <= 5)) || ((0 <= y + 7 && (x <= 3 && ((0 <= i && N <= 10) && 0 <= x) && 0 <= y + 2147483648) && y <= 0) && 10 <= i)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && N <= 10) && x <= 4) && y <= 2) && 6 <= i) && 0 <= x)) || ((((0 <= y && 0 <= x + 2 && (0 <= x + 2147483648 && 0 <= i) && N <= 10) && x <= 0) && y <= 8) && 10 <= i)) || (((((7 <= i && 0 <= x + 4) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 3) && x <= 0) && y <= 0)) || (((0 <= y + 7 && (0 <= x + 3 && N <= 10) && y <= 0) && x <= 0) && 10 <= i)) || (((9 <= i && y <= 6) && 0 <= y && (x <= 3 && 0 <= i) && N <= 10) && 0 <= x)) || (((0 <= x + 8 && 9 <= i) && (((0 <= x + 2147483648 && 0 <= y + 1) && 0 <= i) && x <= 0) && N <= 10) && y <= 0)) || ((((((0 <= i && N <= 10) && 0 <= y) && y <= 2) && 0 <= x + 1) && 3 <= i) && x <= 0)) || ((((((0 <= y + 5 && 0 <= x + 1) && 6 <= i) && x <= 0) && N <= 10) || ((((0 <= y + 5 && x <= 1) && 6 <= i) && N <= 10) && 0 <= x)) && y <= 0)) || (((8 <= i && 0 <= y + 6) && (((0 <= i && x <= 2) && N <= 10) && 0 <= x) && 0 <= y + 2147483648) && y <= 0)) || (((((0 <= x + 5 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 8 <= i) && 0 <= y + 3) && x <= 0) && y <= 0)) || ((((7 <= i && 0 <= y) && y <= 5) && 0 <= x + 2 && (0 <= x + 2147483648 && 0 <= i) && N <= 10) && x <= 0)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y + 2) && x <= 0) && N <= 10) && 0 <= x + 4) && 6 <= i) && y <= 0)) || (((((0 <= i && x <= 1) && 0 <= y) && N <= 10) && 0 <= x) && 10 <= i)) || ((((((0 <= i && N <= 10) && 0 <= y) && 0 <= x + 1) && y <= 5) && 6 <= i) && x <= 0)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && N <= 10) && 9 <= i) && y <= 5) && x <= 4) && 0 <= x)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && N <= 10) && y <= 3) && 0 <= x) && 9 <= i) && x <= 6)) || (((0 <= x + 2 && (((0 <= x + 2147483648 && 0 <= y + 1) && 0 <= i) && x <= 0) && N <= 10) && 3 <= i) && y <= 0)) || ((((0 <= y + 6 && 0 <= x + 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && 10 <= i) && y <= 0)) || (((((x <= 3 && 4 <= i) && 0 <= y) && y <= 1) && N <= 10) && 0 <= x)) || ((x <= 0 && (0 <= x + 2 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && y <= 0) && 10 <= i)) || ((((y <= 3 && ((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && N <= 10) && x <= 0) && 0 <= x + 7) && 10 <= i)) || (((((0 <= y + 8 && 8 <= i) && x <= 0) && N <= 10) && 0 <= x) && y <= 0)) || ((((x <= 4 && 0 <= y + 6) && 10 <= i) && ((0 <= i && N <= 10) && 0 <= x) && 0 <= y + 2147483648) && y <= 0)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && y <= 2) && x <= 0) && N <= 10) && 9 <= i) && 0 <= x + 7)) || (((0 <= x + 5 && (((0 <= x + 2147483648 && 0 <= y + 1) && 0 <= i) && x <= 0) && N <= 10) && 6 <= i) && y <= 0)) || (((0 <= x + 8 && (((0 <= x + 2147483648 && 0 <= i) && 0 <= y + 2) && x <= 0) && N <= 10) && 10 <= i) && y <= 0)) || (((((7 <= i && 0 <= y) && x <= 7) && N <= 10) && 0 <= x) && y <= 0)) || (((((2 <= i && 0 <= y) && 0 <= x + 1) && x <= 0) && y <= 1) && N <= 10)) || (((y <= 4 && 0 <= y) && (((0 <= i && 0 <= x + 4) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && 8 <= i)) || ((((((x <= 1 && 4 <= i) && N <= 10) && 0 <= x) || (((4 <= i && 0 <= x + 1) && x <= 0) && N <= 10)) && 0 <= y + 3) && y <= 0)) || (((((0 <= x + 2 && 0 <= y) && 3 <= i) && x <= 0) && y <= 1) && N <= 10)) || (((((0 <= x + 3 && 4 <= i) && 0 <= y) && x <= 0) && y <= 1) && N <= 10)) || (((y <= 7 && ((0 <= x + 3 && 0 <= i) && 0 <= y) && N <= 10) && x <= 0) && 10 <= i)) || (((((2 <= i && 0 <= y) && y <= 2) && x <= 0) && N <= 10) && 0 <= x)) || (((((x <= 1 && 0 <= y) && y <= 2) && 3 <= i) && N <= 10) && 0 <= x)) || (((((0 <= y && 8 <= i) && x <= 0) && y <= 1) && 0 <= x + 7) && N <= 10)) || (((((0 <= x + 4 && 0 <= y) && (0 <= x + 2147483648 && 0 <= i) && N <= 10) && y <= 2) && 6 <= i) && x <= 0)) || (((((x <= 8 && 0 <= y + 2) && N <= 10) && 0 <= x) && 10 <= i) && y <= 0)) || (((9 <= i && 0 <= y) && y <= 5) && (((0 <= i && 0 <= x + 4) && x <= 0) && N <= 10) && 0 <= y + 2147483648)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && y <= 2) && x <= 0) && N <= 10) && 7 <= i) && 0 <= x + 5)) || ((0 <= x + 8 && 10 <= i) && ((((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && y <= 2) && x <= 0) && N <= 10)) || ((((x <= 6 && ((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && N <= 10) && 8 <= i) && y <= 2) && 0 <= x)) || ((((y <= 4 && ((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && N <= 10) && 8 <= i) && x <= 4) && 0 <= x)) || (7 <= i && ((y <= 4 && x <= 3) && 0 <= y) && ((0 <= i && N <= 10) && 0 <= x) && 0 <= y + 2147483648)) || ((((x <= 3 && 5 <= i) && 0 <= y + 2) && ((0 <= i && N <= 10) && 0 <= x) && 0 <= y + 2147483648) && y <= 0)) || ((((0 <= y + 5 && 10 <= i) && ((0 <= i && N <= 10) && 0 <= x) && 0 <= y + 2147483648) && y <= 0) && x <= 5)) || ((((0 <= y + 5 && 9 <= i) && 0 <= x + 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && y <= 0)) || (((0 <= x + 2 && 2 <= i) && (((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && x <= 0) && N <= 10) && y <= 0)) || (((9 <= i && (y <= 4 && 0 <= x + 5) && N <= 10) && 0 <= y) && x <= 0)) || (((7 <= i && 0 <= y + 5) && (((0 <= i && x <= 2) && N <= 10) && 0 <= x) && 0 <= y + 2147483648) && y <= 0)) || ((((((2 <= i && 0 <= y + 1) && 0 <= x + 1) && x <= 0) && N <= 10) || ((((2 <= i && 0 <= y + 1) && x <= 1) && N <= 10) && 0 <= x)) && y <= 0)) || ((((4 <= i && 0 <= y) && y <= 2) && 0 <= x + 2 && (0 <= x + 2147483648 && 0 <= i) && N <= 10) && x <= 0)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && N <= 10) && y <= 3) && 0 <= x) && x <= 7) && 10 <= i)) || ((0 <= y + 4 && ((((5 <= i && 0 <= x + 1) && x <= 0) && N <= 10) || (((x <= 1 && 5 <= i) && N <= 10) && 0 <= x))) && y <= 0)) || (((0 <= x + 3 && (((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && x <= 0) && N <= 10) && 3 <= i) && y <= 0)) || ((((7 <= i && ((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && N <= 10) && y <= 3) && x <= 4) && 0 <= x)) || (((7 <= i && 0 <= x + 6) && (((0 <= x + 2147483648 && 0 <= y + 1) && 0 <= i) && x <= 0) && N <= 10) && y <= 0)) || ((((((((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 9 <= i) && x <= 7) && 0 <= y + 2) && 0 <= x) && y <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 36 locations, 10 error locations. SAFE Result, 134.9s OverallTime, 45 OverallIterations, 12 TraceHistogramMax, 15.8s AutomataDifference, 0.0s DeadEndRemovalTime, 97.7s HoareAnnotationTime, HoareTripleCheckerStatistics: 1320 SDtfs, 7931 SDslu, 5774 SDs, 0 SdLazy, 1770 SolverSat, 1185 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2498 GetRequests, 2167 SyntacticMatches, 0 SemanticMatches, 331 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2405 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80157occurred in iteration=41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 16.6s AutomataMinimizationTime, 45 MinimizatonAttempts, 203067 StatesRemovedByMinimization, 42 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 1838 NumberOfFragments, 5715 HoareAnnotationTreeSize, 5 FomulaSimplifications, 604260 FormulaSimplificationTreeSizeReduction, 39.5s HoareSimplificationTime, 5 FomulaSimplificationsInter, 87620 FormulaSimplificationTreeSizeReductionInter, 58.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 4417 NumberOfCodeBlocks, 4417 NumberOfCodeBlocksAsserted, 188 NumberOfCheckSat, 4333 ConstructedInterpolants, 0 QuantifiedInterpolants, 1059983 SizeOfPredicates, 2 NumberOfNonLiveVariables, 5003 ConjunctsInSsa, 280 ConjunctsInUnsatCore, 84 InterpolantComputations, 9 PerfectInterpolantSequences, 464/12684 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...