./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 932d0be5444dce6d8d9a378b61966d0cdf64a5cb ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 00:27:49,852 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 00:27:49,853 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 00:27:49,858 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 00:27:49,859 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 00:27:49,859 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 00:27:49,860 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 00:27:49,860 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 00:27:49,861 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 00:27:49,862 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 00:27:49,862 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 00:27:49,862 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 00:27:49,863 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 00:27:49,863 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 00:27:49,864 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 00:27:49,865 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 00:27:49,865 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 00:27:49,866 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 00:27:49,868 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 00:27:49,869 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 00:27:49,869 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 00:27:49,870 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 00:27:49,872 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 00:27:49,872 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 00:27:49,872 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 00:27:49,873 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 00:27:49,874 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 00:27:49,874 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 00:27:49,875 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 00:27:49,875 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 00:27:49,876 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 00:27:49,876 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 00:27:49,876 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 00:27:49,876 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 00:27:49,877 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 00:27:49,877 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 00:27:49,878 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-11-23 00:27:49,888 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 00:27:49,888 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 00:27:49,888 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 00:27:49,889 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 00:27:49,889 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 00:27:49,889 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 00:27:49,889 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 00:27:49,889 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 00:27:49,889 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 00:27:49,889 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 00:27:49,889 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 00:27:49,889 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 00:27:49,890 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 00:27:49,890 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 00:27:49,890 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 00:27:49,890 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 00:27:49,890 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 00:27:49,891 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 00:27:49,891 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 00:27:49,891 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 00:27:49,891 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-23 00:27:49,891 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 00:27:49,891 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 00:27:49,891 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 00:27:49,891 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 00:27:49,892 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 00:27:49,892 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 00:27:49,892 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 00:27:49,892 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 00:27:49,892 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 00:27:49,892 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 00:27:49,892 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 00:27:49,892 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 00:27:49,892 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 00:27:49,892 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 00:27:49,892 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 00:27:49,892 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 932d0be5444dce6d8d9a378b61966d0cdf64a5cb [2018-11-23 00:27:49,913 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 00:27:49,921 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 00:27:49,923 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 00:27:49,924 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 00:27:49,924 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 00:27:49,924 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d_true-termination_true-no-overflow.c [2018-11-23 00:27:49,960 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/data/c91fb032a/d8dd03e6bb024d71a64675e27446b807/FLAGcb8d695b7 [2018-11-23 00:27:50,271 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 00:27:50,271 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d_true-termination_true-no-overflow.c [2018-11-23 00:27:50,275 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/data/c91fb032a/d8dd03e6bb024d71a64675e27446b807/FLAGcb8d695b7 [2018-11-23 00:27:50,283 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/data/c91fb032a/d8dd03e6bb024d71a64675e27446b807 [2018-11-23 00:27:50,286 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 00:27:50,287 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 00:27:50,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 00:27:50,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 00:27:50,290 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 00:27:50,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:27:50" (1/1) ... [2018-11-23 00:27:50,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c93cfda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:27:50, skipping insertion in model container [2018-11-23 00:27:50,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:27:50" (1/1) ... [2018-11-23 00:27:50,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 00:27:50,315 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 00:27:50,429 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 00:27:50,432 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 00:27:50,442 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 00:27:50,449 INFO L195 MainTranslator]: Completed translation [2018-11-23 00:27:50,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:27:50 WrapperNode [2018-11-23 00:27:50,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 00:27:50,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 00:27:50,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 00:27:50,450 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 00:27:50,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:27:50" (1/1) ... [2018-11-23 00:27:50,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:27:50" (1/1) ... [2018-11-23 00:27:50,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 00:27:50,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 00:27:50,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 00:27:50,462 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 00:27:50,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:27:50" (1/1) ... [2018-11-23 00:27:50,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:27:50" (1/1) ... [2018-11-23 00:27:50,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:27:50" (1/1) ... [2018-11-23 00:27:50,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:27:50" (1/1) ... [2018-11-23 00:27:50,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:27:50" (1/1) ... [2018-11-23 00:27:50,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:27:50" (1/1) ... [2018-11-23 00:27:50,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:27:50" (1/1) ... [2018-11-23 00:27:50,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 00:27:50,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 00:27:50,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 00:27:50,476 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 00:27:50,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:27:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 00:27:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 00:27:50,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 00:27:50,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 00:27:50,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 00:27:50,544 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 00:27:50,544 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 00:27:50,650 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 00:27:50,651 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 00:27:50,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:27:50 BoogieIcfgContainer [2018-11-23 00:27:50,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 00:27:50,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 00:27:50,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 00:27:50,653 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 00:27:50,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:27:50" (1/3) ... [2018-11-23 00:27:50,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19af30e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:27:50, skipping insertion in model container [2018-11-23 00:27:50,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:27:50" (2/3) ... [2018-11-23 00:27:50,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19af30e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:27:50, skipping insertion in model container [2018-11-23 00:27:50,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:27:50" (3/3) ... [2018-11-23 00:27:50,655 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-random2d_true-termination_true-no-overflow.c [2018-11-23 00:27:50,660 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 00:27:50,665 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2018-11-23 00:27:50,676 INFO L257 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2018-11-23 00:27:50,702 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 00:27:50,702 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 00:27:50,702 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 00:27:50,702 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 00:27:50,702 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 00:27:50,702 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 00:27:50,702 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 00:27:50,702 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 00:27:50,714 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-11-23 00:27:50,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-23 00:27:50,717 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:50,718 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:50,719 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:50,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:50,723 INFO L82 PathProgramCache]: Analyzing trace with hash 252417093, now seen corresponding path program 1 times [2018-11-23 00:27:50,725 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:50,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:50,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:50,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:50,758 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:50,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:50,806 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 00:27:50,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 00:27:50,807 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 00:27:50,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 00:27:50,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 00:27:50,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 00:27:50,823 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2018-11-23 00:27:50,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:50,872 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2018-11-23 00:27:50,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 00:27:50,873 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-11-23 00:27:50,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:50,879 INFO L225 Difference]: With dead ends: 48 [2018-11-23 00:27:50,879 INFO L226 Difference]: Without dead ends: 34 [2018-11-23 00:27:50,881 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 [2018-11-23 00:27:50,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-23 00:27:50,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2018-11-23 00:27:50,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-23 00:27:50,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2018-11-23 00:27:50,903 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 7 [2018-11-23 00:27:50,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:50,903 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2018-11-23 00:27:50,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 00:27:50,903 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2018-11-23 00:27:50,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-23 00:27:50,904 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:50,904 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:50,904 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:50,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:50,905 INFO L82 PathProgramCache]: Analyzing trace with hash -765004662, now seen corresponding path program 1 times [2018-11-23 00:27:50,905 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:50,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:50,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:50,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:50,906 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:50,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:50,929 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 00:27:50,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 00:27:50,929 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 00:27:50,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 00:27:50,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 00:27:50,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 00:27:50,931 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 3 states. [2018-11-23 00:27:50,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:50,941 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2018-11-23 00:27:50,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 00:27:50,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-11-23 00:27:50,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:50,943 INFO L225 Difference]: With dead ends: 33 [2018-11-23 00:27:50,943 INFO L226 Difference]: Without dead ends: 32 [2018-11-23 00:27:50,943 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 [2018-11-23 00:27:50,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-23 00:27:50,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-11-23 00:27:50,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-23 00:27:50,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2018-11-23 00:27:50,946 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 8 [2018-11-23 00:27:50,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:50,946 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2018-11-23 00:27:50,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 00:27:50,946 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2018-11-23 00:27:50,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-23 00:27:50,947 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:50,947 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:50,947 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:50,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:50,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1157363318, now seen corresponding path program 1 times [2018-11-23 00:27:50,947 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:50,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:50,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:50,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:50,949 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:50,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 00:27:50,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 00:27:50,978 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 00:27:50,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 00:27:50,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 00:27:50,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 00:27:50,978 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 3 states. [2018-11-23 00:27:51,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:51,001 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2018-11-23 00:27:51,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 00:27:51,001 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-23 00:27:51,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:51,002 INFO L225 Difference]: With dead ends: 55 [2018-11-23 00:27:51,002 INFO L226 Difference]: Without dead ends: 53 [2018-11-23 00:27:51,002 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 [2018-11-23 00:27:51,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-23 00:27:51,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2018-11-23 00:27:51,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-23 00:27:51,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2018-11-23 00:27:51,006 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 11 [2018-11-23 00:27:51,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:51,006 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2018-11-23 00:27:51,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 00:27:51,006 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2018-11-23 00:27:51,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-23 00:27:51,007 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:51,007 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:51,007 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:51,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:51,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1157326159, now seen corresponding path program 1 times [2018-11-23 00:27:51,008 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:51,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:51,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:51,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:51,009 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:51,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-23 00:27:51,035 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:51,035 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:27:51,036 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-11-23 00:27:51,037 INFO L202 CegarAbsIntRunner]: [0], [4], [13], [14], [15], [17], [59], [66], [67], [68] [2018-11-23 00:27:51,057 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 00:27:51,057 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 00:27:51,156 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 00:27:51,157 INFO L272 AbstractInterpreter]: Visited 10 different actions 20 times. Merged at 4 different actions 8 times. Never widened. Performed 87 root evaluator evaluations with a maximum evaluation depth of 3. Performed 87 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 6 variables. [2018-11-23 00:27:51,165 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:51,166 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 00:27:51,166 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:51,166 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:27:51,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:51,178 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 00:27:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:51,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:27:51,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:51,220 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:27:51,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:51,256 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:27:51,256 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2018-11-23 00:27:51,256 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:27:51,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 00:27:51,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 00:27:51,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-11-23 00:27:51,257 INFO L87 Difference]: Start difference. First operand 47 states and 63 transitions. Second operand 6 states. [2018-11-23 00:27:51,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:51,319 INFO L93 Difference]: Finished difference Result 108 states and 146 transitions. [2018-11-23 00:27:51,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 00:27:51,320 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-11-23 00:27:51,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:51,321 INFO L225 Difference]: With dead ends: 108 [2018-11-23 00:27:51,321 INFO L226 Difference]: Without dead ends: 107 [2018-11-23 00:27:51,321 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2018-11-23 00:27:51,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-11-23 00:27:51,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 44. [2018-11-23 00:27:51,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-23 00:27:51,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 59 transitions. [2018-11-23 00:27:51,328 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 59 transitions. Word has length 11 [2018-11-23 00:27:51,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:51,329 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 59 transitions. [2018-11-23 00:27:51,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 00:27:51,329 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 59 transitions. [2018-11-23 00:27:51,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-23 00:27:51,329 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:51,329 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:51,329 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:51,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:51,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1518524433, now seen corresponding path program 1 times [2018-11-23 00:27:51,330 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:51,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:51,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:51,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:51,331 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:51,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:51,347 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 00:27:51,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 00:27:51,347 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 00:27:51,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 00:27:51,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 00:27:51,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 00:27:51,348 INFO L87 Difference]: Start difference. First operand 44 states and 59 transitions. Second operand 3 states. [2018-11-23 00:27:51,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:51,370 INFO L93 Difference]: Finished difference Result 81 states and 113 transitions. [2018-11-23 00:27:51,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 00:27:51,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-11-23 00:27:51,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:51,371 INFO L225 Difference]: With dead ends: 81 [2018-11-23 00:27:51,371 INFO L226 Difference]: Without dead ends: 79 [2018-11-23 00:27:51,372 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 [2018-11-23 00:27:51,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-11-23 00:27:51,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2018-11-23 00:27:51,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-11-23 00:27:51,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 110 transitions. [2018-11-23 00:27:51,379 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 110 transitions. Word has length 12 [2018-11-23 00:27:51,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:51,379 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 110 transitions. [2018-11-23 00:27:51,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 00:27:51,379 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 110 transitions. [2018-11-23 00:27:51,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 00:27:51,380 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:51,380 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:51,380 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:51,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:51,380 INFO L82 PathProgramCache]: Analyzing trace with hash 170574579, now seen corresponding path program 1 times [2018-11-23 00:27:51,380 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:51,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:51,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:51,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:51,382 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:51,398 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 00:27:51,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 00:27:51,398 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 00:27:51,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 00:27:51,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 00:27:51,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 00:27:51,398 INFO L87 Difference]: Start difference. First operand 75 states and 110 transitions. Second operand 3 states. [2018-11-23 00:27:51,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:51,425 INFO L93 Difference]: Finished difference Result 143 states and 215 transitions. [2018-11-23 00:27:51,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 00:27:51,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-23 00:27:51,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:51,427 INFO L225 Difference]: With dead ends: 143 [2018-11-23 00:27:51,427 INFO L226 Difference]: Without dead ends: 141 [2018-11-23 00:27:51,427 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 [2018-11-23 00:27:51,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-11-23 00:27:51,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 133. [2018-11-23 00:27:51,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-11-23 00:27:51,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 199 transitions. [2018-11-23 00:27:51,437 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 199 transitions. Word has length 13 [2018-11-23 00:27:51,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:51,438 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 199 transitions. [2018-11-23 00:27:51,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 00:27:51,438 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 199 transitions. [2018-11-23 00:27:51,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-23 00:27:51,438 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:51,438 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:51,439 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:51,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:51,439 INFO L82 PathProgramCache]: Analyzing trace with hash 992844728, now seen corresponding path program 1 times [2018-11-23 00:27:51,439 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:51,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:51,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:51,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:51,443 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:51,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:51,457 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 00:27:51,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 00:27:51,457 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 00:27:51,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 00:27:51,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 00:27:51,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 00:27:51,458 INFO L87 Difference]: Start difference. First operand 133 states and 199 transitions. Second operand 3 states. [2018-11-23 00:27:51,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:51,480 INFO L93 Difference]: Finished difference Result 259 states and 393 transitions. [2018-11-23 00:27:51,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 00:27:51,484 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-11-23 00:27:51,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:51,486 INFO L225 Difference]: With dead ends: 259 [2018-11-23 00:27:51,486 INFO L226 Difference]: Without dead ends: 257 [2018-11-23 00:27:51,486 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 [2018-11-23 00:27:51,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-11-23 00:27:51,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 253. [2018-11-23 00:27:51,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-11-23 00:27:51,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 381 transitions. [2018-11-23 00:27:51,506 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 381 transitions. Word has length 14 [2018-11-23 00:27:51,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:51,506 INFO L480 AbstractCegarLoop]: Abstraction has 253 states and 381 transitions. [2018-11-23 00:27:51,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 00:27:51,507 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 381 transitions. [2018-11-23 00:27:51,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-23 00:27:51,508 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:51,508 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:51,509 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:51,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:51,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1784292138, now seen corresponding path program 1 times [2018-11-23 00:27:51,509 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:51,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:51,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:51,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:51,512 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:51,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:51,551 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:51,551 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:27:51,551 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2018-11-23 00:27:51,552 INFO L202 CegarAbsIntRunner]: [0], [4], [13], [15], [17], [20], [23], [24], [25], [27], [66], [67], [68] [2018-11-23 00:27:51,552 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 00:27:51,553 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 00:27:51,591 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 00:27:51,591 INFO L272 AbstractInterpreter]: Visited 13 different actions 37 times. Merged at 7 different actions 21 times. Never widened. Performed 186 root evaluator evaluations with a maximum evaluation depth of 3. Performed 186 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 6 variables. [2018-11-23 00:27:51,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:51,593 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 00:27:51,593 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:51,593 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:27:51,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:51,599 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 00:27:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:51,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:27:51,608 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:51,608 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:27:51,618 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:51,632 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:27:51,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2018-11-23 00:27:51,632 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:27:51,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 00:27:51,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 00:27:51,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-23 00:27:51,633 INFO L87 Difference]: Start difference. First operand 253 states and 381 transitions. Second operand 4 states. [2018-11-23 00:27:51,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:51,661 INFO L93 Difference]: Finished difference Result 453 states and 692 transitions. [2018-11-23 00:27:51,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 00:27:51,661 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-11-23 00:27:51,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:51,662 INFO L225 Difference]: With dead ends: 453 [2018-11-23 00:27:51,662 INFO L226 Difference]: Without dead ends: 451 [2018-11-23 00:27:51,663 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-23 00:27:51,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2018-11-23 00:27:51,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 361. [2018-11-23 00:27:51,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-11-23 00:27:51,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 547 transitions. [2018-11-23 00:27:51,677 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 547 transitions. Word has length 18 [2018-11-23 00:27:51,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:51,678 INFO L480 AbstractCegarLoop]: Abstraction has 361 states and 547 transitions. [2018-11-23 00:27:51,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 00:27:51,678 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 547 transitions. [2018-11-23 00:27:51,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-23 00:27:51,679 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:51,679 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:51,679 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:51,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:51,679 INFO L82 PathProgramCache]: Analyzing trace with hash -457667387, now seen corresponding path program 1 times [2018-11-23 00:27:51,679 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:51,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:51,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:51,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:51,681 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:51,714 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:51,714 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:51,714 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:27:51,714 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-11-23 00:27:51,714 INFO L202 CegarAbsIntRunner]: [0], [4], [13], [15], [17], [20], [23], [25], [26], [29], [32], [34], [36], [66], [67], [68] [2018-11-23 00:27:51,715 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 00:27:51,715 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 00:27:51,774 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 00:27:51,774 INFO L272 AbstractInterpreter]: Visited 16 different actions 60 times. Merged at 11 different actions 41 times. Never widened. Performed 290 root evaluator evaluations with a maximum evaluation depth of 3. Performed 290 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 6 variables. [2018-11-23 00:27:51,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:51,775 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 00:27:51,775 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:51,775 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:27:51,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:51,782 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 00:27:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:51,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:27:51,795 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:51,795 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:27:51,809 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:51,827 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-23 00:27:51,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 5 [2018-11-23 00:27:51,827 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 00:27:51,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 00:27:51,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 00:27:51,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-23 00:27:51,828 INFO L87 Difference]: Start difference. First operand 361 states and 547 transitions. Second operand 3 states. [2018-11-23 00:27:51,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:51,880 INFO L93 Difference]: Finished difference Result 361 states and 547 transitions. [2018-11-23 00:27:51,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 00:27:51,881 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-11-23 00:27:51,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:51,882 INFO L225 Difference]: With dead ends: 361 [2018-11-23 00:27:51,883 INFO L226 Difference]: Without dead ends: 360 [2018-11-23 00:27:51,883 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-23 00:27:51,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2018-11-23 00:27:51,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2018-11-23 00:27:51,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2018-11-23 00:27:51,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 539 transitions. [2018-11-23 00:27:51,897 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 539 transitions. Word has length 20 [2018-11-23 00:27:51,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:51,898 INFO L480 AbstractCegarLoop]: Abstraction has 360 states and 539 transitions. [2018-11-23 00:27:51,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 00:27:51,898 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 539 transitions. [2018-11-23 00:27:51,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-23 00:27:51,899 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:51,899 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:51,899 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:51,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:51,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1302601353, now seen corresponding path program 1 times [2018-11-23 00:27:51,900 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:51,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:51,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:51,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:51,901 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:51,933 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:51,934 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:27:51,934 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 22 with the following transitions: [2018-11-23 00:27:51,934 INFO L202 CegarAbsIntRunner]: [0], [4], [13], [15], [17], [20], [29], [32], [34], [35], [36], [66], [67], [68] [2018-11-23 00:27:51,934 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 00:27:51,935 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 00:27:51,965 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 00:27:51,965 INFO L272 AbstractInterpreter]: Visited 14 different actions 41 times. Merged at 8 different actions 24 times. Never widened. Performed 198 root evaluator evaluations with a maximum evaluation depth of 3. Performed 198 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 6 variables. [2018-11-23 00:27:51,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:51,968 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 00:27:51,969 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:51,969 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:27:51,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:51,983 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 00:27:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:51,990 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:27:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:51,993 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:27:52,015 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:52,030 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:27:52,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2018-11-23 00:27:52,030 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:27:52,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 00:27:52,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 00:27:52,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-23 00:27:52,031 INFO L87 Difference]: Start difference. First operand 360 states and 539 transitions. Second operand 4 states. [2018-11-23 00:27:52,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:52,074 INFO L93 Difference]: Finished difference Result 613 states and 923 transitions. [2018-11-23 00:27:52,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 00:27:52,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-11-23 00:27:52,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:52,077 INFO L225 Difference]: With dead ends: 613 [2018-11-23 00:27:52,077 INFO L226 Difference]: Without dead ends: 612 [2018-11-23 00:27:52,078 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 [2018-11-23 00:27:52,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2018-11-23 00:27:52,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 468. [2018-11-23 00:27:52,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2018-11-23 00:27:52,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 705 transitions. [2018-11-23 00:27:52,091 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 705 transitions. Word has length 21 [2018-11-23 00:27:52,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:52,092 INFO L480 AbstractCegarLoop]: Abstraction has 468 states and 705 transitions. [2018-11-23 00:27:52,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 00:27:52,092 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 705 transitions. [2018-11-23 00:27:52,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-23 00:27:52,094 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:52,095 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:52,095 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:52,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:52,095 INFO L82 PathProgramCache]: Analyzing trace with hash -789737976, now seen corresponding path program 1 times [2018-11-23 00:27:52,095 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:52,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:52,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:52,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:52,097 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:52,121 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:52,121 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:52,121 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:27:52,121 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2018-11-23 00:27:52,121 INFO L202 CegarAbsIntRunner]: [0], [4], [13], [15], [17], [20], [29], [38], [41], [42], [43], [45], [66], [67], [68] [2018-11-23 00:27:52,122 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 00:27:52,122 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 00:27:52,153 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 00:27:52,154 INFO L272 AbstractInterpreter]: Visited 15 different actions 45 times. Merged at 9 different actions 27 times. Never widened. Performed 210 root evaluator evaluations with a maximum evaluation depth of 3. Performed 210 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 6 variables. [2018-11-23 00:27:52,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:52,163 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 00:27:52,163 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:52,163 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:27:52,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:52,170 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 00:27:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:52,182 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:27:52,184 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:52,185 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:27:52,204 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:52,219 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:27:52,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2018-11-23 00:27:52,219 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:27:52,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 00:27:52,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 00:27:52,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-23 00:27:52,219 INFO L87 Difference]: Start difference. First operand 468 states and 705 transitions. Second operand 4 states. [2018-11-23 00:27:52,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:52,253 INFO L93 Difference]: Finished difference Result 838 states and 1288 transitions. [2018-11-23 00:27:52,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 00:27:52,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-11-23 00:27:52,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:52,257 INFO L225 Difference]: With dead ends: 838 [2018-11-23 00:27:52,257 INFO L226 Difference]: Without dead ends: 836 [2018-11-23 00:27:52,258 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-23 00:27:52,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2018-11-23 00:27:52,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 672. [2018-11-23 00:27:52,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 672 states. [2018-11-23 00:27:52,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1011 transitions. [2018-11-23 00:27:52,275 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1011 transitions. Word has length 22 [2018-11-23 00:27:52,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:52,276 INFO L480 AbstractCegarLoop]: Abstraction has 672 states and 1011 transitions. [2018-11-23 00:27:52,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 00:27:52,276 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1011 transitions. [2018-11-23 00:27:52,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-23 00:27:52,277 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:52,277 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:52,277 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:52,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:52,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1545985083, now seen corresponding path program 1 times [2018-11-23 00:27:52,278 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:52,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:52,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:52,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:52,280 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:52,301 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:52,301 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:52,301 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:27:52,301 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-11-23 00:27:52,302 INFO L202 CegarAbsIntRunner]: [0], [4], [13], [15], [17], [20], [29], [38], [41], [43], [44], [47], [50], [52], [54], [66], [67], [68] [2018-11-23 00:27:52,303 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 00:27:52,303 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 00:27:52,339 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 00:27:52,339 INFO L272 AbstractInterpreter]: Visited 18 different actions 57 times. Merged at 12 different actions 36 times. Never widened. Performed 246 root evaluator evaluations with a maximum evaluation depth of 3. Performed 246 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 6 variables. [2018-11-23 00:27:52,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:52,353 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 00:27:52,353 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:52,353 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:27:52,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:52,360 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 00:27:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:52,367 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:27:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:52,382 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:27:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:52,435 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-23 00:27:52,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 5 [2018-11-23 00:27:52,435 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 00:27:52,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 00:27:52,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 00:27:52,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-23 00:27:52,436 INFO L87 Difference]: Start difference. First operand 672 states and 1011 transitions. Second operand 3 states. [2018-11-23 00:27:52,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:52,451 INFO L93 Difference]: Finished difference Result 672 states and 1011 transitions. [2018-11-23 00:27:52,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 00:27:52,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2018-11-23 00:27:52,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:52,453 INFO L225 Difference]: With dead ends: 672 [2018-11-23 00:27:52,453 INFO L226 Difference]: Without dead ends: 671 [2018-11-23 00:27:52,454 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-23 00:27:52,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2018-11-23 00:27:52,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 671. [2018-11-23 00:27:52,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2018-11-23 00:27:52,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 995 transitions. [2018-11-23 00:27:52,466 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 995 transitions. Word has length 24 [2018-11-23 00:27:52,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:52,467 INFO L480 AbstractCegarLoop]: Abstraction has 671 states and 995 transitions. [2018-11-23 00:27:52,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 00:27:52,467 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 995 transitions. [2018-11-23 00:27:52,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 00:27:52,467 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:52,467 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:52,468 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:52,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:52,468 INFO L82 PathProgramCache]: Analyzing trace with hash 582614026, now seen corresponding path program 2 times [2018-11-23 00:27:52,468 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:52,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:52,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:52,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:52,469 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:52,494 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:52,494 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:52,494 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:27:52,494 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:27:52,494 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:27:52,494 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:52,494 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:27:52,513 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 00:27:52,513 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 00:27:52,521 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-23 00:27:52,521 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:27:52,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:27:52,524 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:52,524 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:27:52,551 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:52,566 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:27:52,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2018-11-23 00:27:52,566 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:27:52,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 00:27:52,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 00:27:52,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-23 00:27:52,567 INFO L87 Difference]: Start difference. First operand 671 states and 995 transitions. Second operand 5 states. [2018-11-23 00:27:52,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:52,601 INFO L93 Difference]: Finished difference Result 1156 states and 1733 transitions. [2018-11-23 00:27:52,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 00:27:52,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-11-23 00:27:52,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:52,603 INFO L225 Difference]: With dead ends: 1156 [2018-11-23 00:27:52,603 INFO L226 Difference]: Without dead ends: 1154 [2018-11-23 00:27:52,604 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-23 00:27:52,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2018-11-23 00:27:52,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 917. [2018-11-23 00:27:52,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 917 states. [2018-11-23 00:27:52,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1355 transitions. [2018-11-23 00:27:52,623 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1355 transitions. Word has length 25 [2018-11-23 00:27:52,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:52,623 INFO L480 AbstractCegarLoop]: Abstraction has 917 states and 1355 transitions. [2018-11-23 00:27:52,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 00:27:52,623 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1355 transitions. [2018-11-23 00:27:52,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 00:27:52,624 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:52,624 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:52,624 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:52,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:52,625 INFO L82 PathProgramCache]: Analyzing trace with hash -680711543, now seen corresponding path program 1 times [2018-11-23 00:27:52,625 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:52,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:52,625 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:27:52,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:52,626 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:52,647 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:52,647 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:52,647 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:27:52,647 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 26 with the following transitions: [2018-11-23 00:27:52,648 INFO L202 CegarAbsIntRunner]: [0], [4], [13], [15], [17], [20], [29], [38], [47], [50], [52], [53], [54], [66], [67], [68] [2018-11-23 00:27:52,648 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 00:27:52,648 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 00:27:52,679 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 00:27:52,680 INFO L272 AbstractInterpreter]: Visited 16 different actions 60 times. Merged at 11 different actions 41 times. Never widened. Performed 290 root evaluator evaluations with a maximum evaluation depth of 3. Performed 290 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 6 variables. [2018-11-23 00:27:52,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:52,685 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 00:27:52,685 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:52,685 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:27:52,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:52,694 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 00:27:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:52,700 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:27:52,702 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:52,702 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:27:52,722 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:52,736 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:27:52,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2018-11-23 00:27:52,736 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:27:52,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 00:27:52,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 00:27:52,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-23 00:27:52,737 INFO L87 Difference]: Start difference. First operand 917 states and 1355 transitions. Second operand 4 states. [2018-11-23 00:27:52,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:52,802 INFO L93 Difference]: Finished difference Result 1561 states and 2332 transitions. [2018-11-23 00:27:52,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 00:27:52,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-23 00:27:52,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:52,810 INFO L225 Difference]: With dead ends: 1561 [2018-11-23 00:27:52,810 INFO L226 Difference]: Without dead ends: 1560 [2018-11-23 00:27:52,811 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-23 00:27:52,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2018-11-23 00:27:52,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1197. [2018-11-23 00:27:52,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2018-11-23 00:27:52,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1772 transitions. [2018-11-23 00:27:52,849 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1772 transitions. Word has length 25 [2018-11-23 00:27:52,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:52,849 INFO L480 AbstractCegarLoop]: Abstraction has 1197 states and 1772 transitions. [2018-11-23 00:27:52,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 00:27:52,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1772 transitions. [2018-11-23 00:27:52,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-23 00:27:52,850 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:52,850 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:52,850 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:52,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:52,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1259703649, now seen corresponding path program 2 times [2018-11-23 00:27:52,851 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:52,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:52,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:52,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:52,852 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:52,873 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:52,874 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:52,874 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:27:52,874 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:27:52,874 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:27:52,874 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:52,874 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:27:52,887 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 00:27:52,888 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 00:27:52,897 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-23 00:27:52,898 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:27:52,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:27:52,902 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:52,902 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:27:52,927 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:52,953 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:27:52,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2018-11-23 00:27:52,953 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:27:52,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 00:27:52,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 00:27:52,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-23 00:27:52,953 INFO L87 Difference]: Start difference. First operand 1197 states and 1772 transitions. Second operand 5 states. [2018-11-23 00:27:53,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:53,018 INFO L93 Difference]: Finished difference Result 1955 states and 2906 transitions. [2018-11-23 00:27:53,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 00:27:53,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-11-23 00:27:53,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:53,026 INFO L225 Difference]: With dead ends: 1955 [2018-11-23 00:27:53,026 INFO L226 Difference]: Without dead ends: 1954 [2018-11-23 00:27:53,028 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-23 00:27:53,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2018-11-23 00:27:53,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1433. [2018-11-23 00:27:53,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1433 states. [2018-11-23 00:27:53,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 2118 transitions. [2018-11-23 00:27:53,077 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 2118 transitions. Word has length 29 [2018-11-23 00:27:53,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:53,077 INFO L480 AbstractCegarLoop]: Abstraction has 1433 states and 2118 transitions. [2018-11-23 00:27:53,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 00:27:53,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 2118 transitions. [2018-11-23 00:27:53,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-23 00:27:53,078 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:53,078 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:53,078 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:53,078 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:53,079 INFO L82 PathProgramCache]: Analyzing trace with hash -886740333, now seen corresponding path program 2 times [2018-11-23 00:27:53,079 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:53,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:53,079 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:27:53,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:53,080 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:53,126 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:53,127 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:53,127 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:27:53,127 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:27:53,127 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:27:53,127 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:53,127 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:27:53,140 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 00:27:53,140 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 00:27:53,154 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-23 00:27:53,154 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:27:53,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:27:53,159 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:53,159 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:27:53,187 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:53,212 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:27:53,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2018-11-23 00:27:53,213 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:27:53,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 00:27:53,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 00:27:53,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-23 00:27:53,214 INFO L87 Difference]: Start difference. First operand 1433 states and 2118 transitions. Second operand 5 states. [2018-11-23 00:27:53,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:53,291 INFO L93 Difference]: Finished difference Result 2466 states and 3697 transitions. [2018-11-23 00:27:53,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 00:27:53,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2018-11-23 00:27:53,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:53,298 INFO L225 Difference]: With dead ends: 2466 [2018-11-23 00:27:53,298 INFO L226 Difference]: Without dead ends: 2464 [2018-11-23 00:27:53,299 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-23 00:27:53,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2018-11-23 00:27:53,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 1963. [2018-11-23 00:27:53,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1963 states. [2018-11-23 00:27:53,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1963 states to 1963 states and 2886 transitions. [2018-11-23 00:27:53,360 INFO L78 Accepts]: Start accepts. Automaton has 1963 states and 2886 transitions. Word has length 31 [2018-11-23 00:27:53,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:53,360 INFO L480 AbstractCegarLoop]: Abstraction has 1963 states and 2886 transitions. [2018-11-23 00:27:53,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 00:27:53,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1963 states and 2886 transitions. [2018-11-23 00:27:53,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-23 00:27:53,361 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:53,361 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:53,361 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:53,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:53,361 INFO L82 PathProgramCache]: Analyzing trace with hash -716039594, now seen corresponding path program 3 times [2018-11-23 00:27:53,361 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:53,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:53,362 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:27:53,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:53,362 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:53,387 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:53,387 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:53,387 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:27:53,387 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:27:53,388 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:27:53,388 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:53,388 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:27:53,400 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 00:27:53,400 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-23 00:27:53,409 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 00:27:53,409 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:27:53,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:27:53,414 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:53,414 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:27:53,444 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:53,468 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:27:53,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2018-11-23 00:27:53,468 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:27:53,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 00:27:53,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 00:27:53,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-23 00:27:53,469 INFO L87 Difference]: Start difference. First operand 1963 states and 2886 transitions. Second operand 6 states. [2018-11-23 00:27:53,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:53,556 INFO L93 Difference]: Finished difference Result 3177 states and 4736 transitions. [2018-11-23 00:27:53,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 00:27:53,557 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2018-11-23 00:27:53,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:53,562 INFO L225 Difference]: With dead ends: 3177 [2018-11-23 00:27:53,562 INFO L226 Difference]: Without dead ends: 3175 [2018-11-23 00:27:53,563 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 [2018-11-23 00:27:53,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3175 states. [2018-11-23 00:27:53,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3175 to 2567. [2018-11-23 00:27:53,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2567 states. [2018-11-23 00:27:53,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2567 states to 2567 states and 3753 transitions. [2018-11-23 00:27:53,607 INFO L78 Accepts]: Start accepts. Automaton has 2567 states and 3753 transitions. Word has length 32 [2018-11-23 00:27:53,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:53,607 INFO L480 AbstractCegarLoop]: Abstraction has 2567 states and 3753 transitions. [2018-11-23 00:27:53,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 00:27:53,607 INFO L276 IsEmpty]: Start isEmpty. Operand 2567 states and 3753 transitions. [2018-11-23 00:27:53,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-23 00:27:53,608 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:53,608 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:53,608 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:53,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:53,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1327564892, now seen corresponding path program 2 times [2018-11-23 00:27:53,608 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:53,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:53,609 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:27:53,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:53,609 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:53,644 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:53,645 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:53,645 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:27:53,645 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:27:53,645 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:27:53,645 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:53,645 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:27:53,665 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 00:27:53,665 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 00:27:53,684 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-23 00:27:53,684 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:27:53,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:27:53,687 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:53,688 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:27:53,739 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:53,754 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:27:53,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2018-11-23 00:27:53,754 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:27:53,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 00:27:53,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 00:27:53,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-23 00:27:53,755 INFO L87 Difference]: Start difference. First operand 2567 states and 3753 transitions. Second operand 5 states. [2018-11-23 00:27:53,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:53,817 INFO L93 Difference]: Finished difference Result 4186 states and 6159 transitions. [2018-11-23 00:27:53,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 00:27:53,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-11-23 00:27:53,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:53,824 INFO L225 Difference]: With dead ends: 4186 [2018-11-23 00:27:53,825 INFO L226 Difference]: Without dead ends: 4185 [2018-11-23 00:27:53,826 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-23 00:27:53,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4185 states. [2018-11-23 00:27:53,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4185 to 3075. [2018-11-23 00:27:53,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3075 states. [2018-11-23 00:27:53,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3075 states to 3075 states and 4487 transitions. [2018-11-23 00:27:53,882 INFO L78 Accepts]: Start accepts. Automaton has 3075 states and 4487 transitions. Word has length 35 [2018-11-23 00:27:53,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:53,882 INFO L480 AbstractCegarLoop]: Abstraction has 3075 states and 4487 transitions. [2018-11-23 00:27:53,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 00:27:53,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3075 states and 4487 transitions. [2018-11-23 00:27:53,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-23 00:27:53,883 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:53,883 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:53,883 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:53,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:53,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1468116811, now seen corresponding path program 3 times [2018-11-23 00:27:53,884 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:53,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:53,884 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:27:53,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:53,885 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:53,919 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:53,920 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:53,920 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:27:53,920 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:27:53,920 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:27:53,920 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:53,920 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:27:53,928 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 00:27:53,928 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-23 00:27:53,956 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 00:27:53,956 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:27:53,957 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:27:53,961 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:53,961 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:27:54,003 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:54,018 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:27:54,018 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2018-11-23 00:27:54,018 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:27:54,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 00:27:54,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 00:27:54,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-23 00:27:54,019 INFO L87 Difference]: Start difference. First operand 3075 states and 4487 transitions. Second operand 6 states. [2018-11-23 00:27:54,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:54,083 INFO L93 Difference]: Finished difference Result 4731 states and 6951 transitions. [2018-11-23 00:27:54,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 00:27:54,083 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2018-11-23 00:27:54,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:54,091 INFO L225 Difference]: With dead ends: 4731 [2018-11-23 00:27:54,091 INFO L226 Difference]: Without dead ends: 4730 [2018-11-23 00:27:54,093 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-23 00:27:54,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4730 states. [2018-11-23 00:27:54,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4730 to 3463. [2018-11-23 00:27:54,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3463 states. [2018-11-23 00:27:54,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3463 states to 3463 states and 5051 transitions. [2018-11-23 00:27:54,149 INFO L78 Accepts]: Start accepts. Automaton has 3463 states and 5051 transitions. Word has length 37 [2018-11-23 00:27:54,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:54,149 INFO L480 AbstractCegarLoop]: Abstraction has 3463 states and 5051 transitions. [2018-11-23 00:27:54,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 00:27:54,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3463 states and 5051 transitions. [2018-11-23 00:27:54,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-23 00:27:54,150 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:54,150 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:54,151 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:54,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:54,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1042968950, now seen corresponding path program 4 times [2018-11-23 00:27:54,151 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:54,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:54,152 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:27:54,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:54,152 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:54,193 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:54,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:54,193 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:27:54,193 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:27:54,193 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:27:54,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:54,193 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:27:54,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:54,210 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 00:27:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:54,219 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:27:54,223 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:54,223 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:27:54,285 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:54,300 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:27:54,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2018-11-23 00:27:54,300 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:27:54,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 00:27:54,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 00:27:54,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-23 00:27:54,301 INFO L87 Difference]: Start difference. First operand 3463 states and 5051 transitions. Second operand 7 states. [2018-11-23 00:27:54,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:54,390 INFO L93 Difference]: Finished difference Result 5330 states and 7888 transitions. [2018-11-23 00:27:54,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 00:27:54,391 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2018-11-23 00:27:54,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:54,409 INFO L225 Difference]: With dead ends: 5330 [2018-11-23 00:27:54,409 INFO L226 Difference]: Without dead ends: 5328 [2018-11-23 00:27:54,411 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-23 00:27:54,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5328 states. [2018-11-23 00:27:54,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5328 to 4381. [2018-11-23 00:27:54,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4381 states. [2018-11-23 00:27:54,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4381 states to 4381 states and 6357 transitions. [2018-11-23 00:27:54,520 INFO L78 Accepts]: Start accepts. Automaton has 4381 states and 6357 transitions. Word has length 39 [2018-11-23 00:27:54,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:54,520 INFO L480 AbstractCegarLoop]: Abstraction has 4381 states and 6357 transitions. [2018-11-23 00:27:54,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 00:27:54,520 INFO L276 IsEmpty]: Start isEmpty. Operand 4381 states and 6357 transitions. [2018-11-23 00:27:54,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-23 00:27:54,521 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:54,521 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:54,522 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:54,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:54,522 INFO L82 PathProgramCache]: Analyzing trace with hash 535132776, now seen corresponding path program 3 times [2018-11-23 00:27:54,522 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:54,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:54,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:54,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:54,523 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:54,560 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:54,560 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:27:54,560 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:27:54,561 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:27:54,561 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:54,561 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:27:54,576 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 00:27:54,576 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-23 00:27:54,587 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 00:27:54,587 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:27:54,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:27:54,595 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:54,597 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:27:54,628 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:54,653 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:27:54,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2018-11-23 00:27:54,654 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:27:54,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 00:27:54,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 00:27:54,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-23 00:27:54,654 INFO L87 Difference]: Start difference. First operand 4381 states and 6357 transitions. Second operand 6 states. [2018-11-23 00:27:54,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:54,733 INFO L93 Difference]: Finished difference Result 7073 states and 10429 transitions. [2018-11-23 00:27:54,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 00:27:54,733 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2018-11-23 00:27:54,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:54,743 INFO L225 Difference]: With dead ends: 7073 [2018-11-23 00:27:54,743 INFO L226 Difference]: Without dead ends: 7071 [2018-11-23 00:27:54,747 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 [2018-11-23 00:27:54,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7071 states. [2018-11-23 00:27:54,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7071 to 5733. [2018-11-23 00:27:54,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5733 states. [2018-11-23 00:27:54,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5733 states to 5733 states and 8269 transitions. [2018-11-23 00:27:54,828 INFO L78 Accepts]: Start accepts. Automaton has 5733 states and 8269 transitions. Word has length 40 [2018-11-23 00:27:54,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:54,828 INFO L480 AbstractCegarLoop]: Abstraction has 5733 states and 8269 transitions. [2018-11-23 00:27:54,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 00:27:54,829 INFO L276 IsEmpty]: Start isEmpty. Operand 5733 states and 8269 transitions. [2018-11-23 00:27:54,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-23 00:27:54,830 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:54,830 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:54,830 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:54,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:54,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1865791691, now seen corresponding path program 4 times [2018-11-23 00:27:54,830 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:54,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:54,831 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:27:54,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:54,831 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:54,878 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:54,878 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:54,878 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:27:54,878 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:27:54,878 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:27:54,878 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:54,878 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:27:54,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:54,886 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 00:27:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:54,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:27:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:54,899 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:27:54,959 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:54,973 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:27:54,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2018-11-23 00:27:54,973 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:27:54,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 00:27:54,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 00:27:54,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-23 00:27:54,974 INFO L87 Difference]: Start difference. First operand 5733 states and 8269 transitions. Second operand 7 states. [2018-11-23 00:27:55,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:55,065 INFO L93 Difference]: Finished difference Result 8442 states and 12279 transitions. [2018-11-23 00:27:55,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 00:27:55,067 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2018-11-23 00:27:55,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:55,076 INFO L225 Difference]: With dead ends: 8442 [2018-11-23 00:27:55,076 INFO L226 Difference]: Without dead ends: 8441 [2018-11-23 00:27:55,079 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 [2018-11-23 00:27:55,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8441 states. [2018-11-23 00:27:55,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8441 to 6241. [2018-11-23 00:27:55,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6241 states. [2018-11-23 00:27:55,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6241 states to 6241 states and 9003 transitions. [2018-11-23 00:27:55,179 INFO L78 Accepts]: Start accepts. Automaton has 6241 states and 9003 transitions. Word has length 45 [2018-11-23 00:27:55,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:55,179 INFO L480 AbstractCegarLoop]: Abstraction has 6241 states and 9003 transitions. [2018-11-23 00:27:55,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 00:27:55,179 INFO L276 IsEmpty]: Start isEmpty. Operand 6241 states and 9003 transitions. [2018-11-23 00:27:55,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-23 00:27:55,180 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:55,180 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:55,181 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:55,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:55,181 INFO L82 PathProgramCache]: Analyzing trace with hash 702806639, now seen corresponding path program 3 times [2018-11-23 00:27:55,181 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:55,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:55,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:55,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:55,182 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:55,213 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:55,213 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:55,213 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:27:55,214 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:27:55,214 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:27:55,214 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:55,214 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:27:55,222 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 00:27:55,222 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-23 00:27:55,248 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 00:27:55,248 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:27:55,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:27:55,252 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:55,252 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:27:55,307 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:55,321 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:27:55,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2018-11-23 00:27:55,322 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:27:55,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 00:27:55,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 00:27:55,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-23 00:27:55,322 INFO L87 Difference]: Start difference. First operand 6241 states and 9003 transitions. Second operand 6 states. [2018-11-23 00:27:55,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:55,428 INFO L93 Difference]: Finished difference Result 9588 states and 13947 transitions. [2018-11-23 00:27:55,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 00:27:55,429 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2018-11-23 00:27:55,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:55,440 INFO L225 Difference]: With dead ends: 9588 [2018-11-23 00:27:55,440 INFO L226 Difference]: Without dead ends: 9587 [2018-11-23 00:27:55,444 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-23 00:27:55,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9587 states. [2018-11-23 00:27:55,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9587 to 7029. [2018-11-23 00:27:55,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7029 states. [2018-11-23 00:27:55,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7029 states to 7029 states and 10135 transitions. [2018-11-23 00:27:55,541 INFO L78 Accepts]: Start accepts. Automaton has 7029 states and 10135 transitions. Word has length 45 [2018-11-23 00:27:55,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:55,541 INFO L480 AbstractCegarLoop]: Abstraction has 7029 states and 10135 transitions. [2018-11-23 00:27:55,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 00:27:55,541 INFO L276 IsEmpty]: Start isEmpty. Operand 7029 states and 10135 transitions. [2018-11-23 00:27:55,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-23 00:27:55,542 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:55,542 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:55,543 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:55,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:55,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1845802966, now seen corresponding path program 5 times [2018-11-23 00:27:55,543 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:55,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:55,544 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:27:55,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:55,544 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:55,581 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:55,581 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:55,581 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:27:55,581 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:27:55,581 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:27:55,581 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:55,581 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:27:55,593 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 00:27:55,594 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 00:27:55,620 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-23 00:27:55,620 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:27:55,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:27:55,626 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:55,626 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:27:55,692 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:55,707 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:27:55,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2018-11-23 00:27:55,707 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:27:55,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 00:27:55,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 00:27:55,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-23 00:27:55,708 INFO L87 Difference]: Start difference. First operand 7029 states and 10135 transitions. Second operand 8 states. [2018-11-23 00:27:55,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:55,823 INFO L93 Difference]: Finished difference Result 10385 states and 15210 transitions. [2018-11-23 00:27:55,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 00:27:55,839 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2018-11-23 00:27:55,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:55,853 INFO L225 Difference]: With dead ends: 10385 [2018-11-23 00:27:55,853 INFO L226 Difference]: Without dead ends: 10383 [2018-11-23 00:27:55,857 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-23 00:27:55,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10383 states. [2018-11-23 00:27:56,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10383 to 8669. [2018-11-23 00:27:56,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8669 states. [2018-11-23 00:27:56,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8669 states to 8669 states and 12442 transitions. [2018-11-23 00:27:56,033 INFO L78 Accepts]: Start accepts. Automaton has 8669 states and 12442 transitions. Word has length 46 [2018-11-23 00:27:56,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:56,033 INFO L480 AbstractCegarLoop]: Abstraction has 8669 states and 12442 transitions. [2018-11-23 00:27:56,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 00:27:56,033 INFO L276 IsEmpty]: Start isEmpty. Operand 8669 states and 12442 transitions. [2018-11-23 00:27:56,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-23 00:27:56,035 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:56,035 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:56,035 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:56,035 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:56,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1310627277, now seen corresponding path program 4 times [2018-11-23 00:27:56,035 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:56,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:56,036 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:27:56,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:56,036 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:56,076 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:56,076 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:27:56,076 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:27:56,076 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:27:56,076 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:56,077 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:27:56,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:56,095 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 00:27:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:56,103 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:27:56,106 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:56,106 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:27:56,144 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:56,158 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:27:56,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2018-11-23 00:27:56,158 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:27:56,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 00:27:56,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 00:27:56,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-23 00:27:56,159 INFO L87 Difference]: Start difference. First operand 8669 states and 12442 transitions. Second operand 7 states. [2018-11-23 00:27:56,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:56,266 INFO L93 Difference]: Finished difference Result 13316 states and 19433 transitions. [2018-11-23 00:27:56,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 00:27:56,266 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2018-11-23 00:27:56,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:56,281 INFO L225 Difference]: With dead ends: 13316 [2018-11-23 00:27:56,281 INFO L226 Difference]: Without dead ends: 13314 [2018-11-23 00:27:56,285 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-23 00:27:56,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13314 states. [2018-11-23 00:27:56,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13314 to 10971. [2018-11-23 00:27:56,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10971 states. [2018-11-23 00:27:56,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10971 states to 10971 states and 15661 transitions. [2018-11-23 00:27:56,429 INFO L78 Accepts]: Start accepts. Automaton has 10971 states and 15661 transitions. Word has length 49 [2018-11-23 00:27:56,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:56,429 INFO L480 AbstractCegarLoop]: Abstraction has 10971 states and 15661 transitions. [2018-11-23 00:27:56,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 00:27:56,429 INFO L276 IsEmpty]: Start isEmpty. Operand 10971 states and 15661 transitions. [2018-11-23 00:27:56,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-23 00:27:56,431 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:56,431 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:56,431 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:56,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:56,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1711194378, now seen corresponding path program 6 times [2018-11-23 00:27:56,431 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:56,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:56,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:56,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:56,432 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:56,533 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:56,533 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:56,534 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:27:56,534 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:27:56,534 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:27:56,534 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:56,534 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:27:56,540 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 00:27:56,540 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-23 00:27:56,553 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 00:27:56,553 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:27:56,555 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:27:56,560 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:56,560 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:27:56,610 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:56,624 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:27:56,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2018-11-23 00:27:56,624 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:27:56,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 00:27:56,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 00:27:56,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-23 00:27:56,625 INFO L87 Difference]: Start difference. First operand 10971 states and 15661 transitions. Second operand 9 states. [2018-11-23 00:27:56,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:56,759 INFO L93 Difference]: Finished difference Result 15626 states and 22669 transitions. [2018-11-23 00:27:56,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 00:27:56,759 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2018-11-23 00:27:56,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:56,769 INFO L225 Difference]: With dead ends: 15626 [2018-11-23 00:27:56,769 INFO L226 Difference]: Without dead ends: 15624 [2018-11-23 00:27:56,774 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-23 00:27:56,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15624 states. [2018-11-23 00:27:56,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15624 to 13095. [2018-11-23 00:27:56,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13095 states. [2018-11-23 00:27:56,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13095 states to 13095 states and 18613 transitions. [2018-11-23 00:27:56,941 INFO L78 Accepts]: Start accepts. Automaton has 13095 states and 18613 transitions. Word has length 53 [2018-11-23 00:27:56,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:56,942 INFO L480 AbstractCegarLoop]: Abstraction has 13095 states and 18613 transitions. [2018-11-23 00:27:56,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 00:27:56,942 INFO L276 IsEmpty]: Start isEmpty. Operand 13095 states and 18613 transitions. [2018-11-23 00:27:56,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-23 00:27:56,943 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:56,944 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:56,944 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:56,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:56,944 INFO L82 PathProgramCache]: Analyzing trace with hash -434547425, now seen corresponding path program 5 times [2018-11-23 00:27:56,944 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:56,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:56,945 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:27:56,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:56,945 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:57,004 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:57,004 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:27:57,004 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:27:57,004 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:27:57,004 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:57,004 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:27:57,016 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 00:27:57,016 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 00:27:57,034 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-23 00:27:57,034 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:27:57,036 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:27:57,043 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:57,043 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:27:57,120 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:57,144 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:27:57,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2018-11-23 00:27:57,144 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:27:57,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 00:27:57,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 00:27:57,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-23 00:27:57,145 INFO L87 Difference]: Start difference. First operand 13095 states and 18613 transitions. Second operand 8 states. [2018-11-23 00:27:57,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:57,421 INFO L93 Difference]: Finished difference Result 19894 states and 28525 transitions. [2018-11-23 00:27:57,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 00:27:57,421 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2018-11-23 00:27:57,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:57,435 INFO L225 Difference]: With dead ends: 19894 [2018-11-23 00:27:57,435 INFO L226 Difference]: Without dead ends: 19893 [2018-11-23 00:27:57,438 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-23 00:27:57,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19893 states. [2018-11-23 00:27:57,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19893 to 14133. [2018-11-23 00:27:57,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14133 states. [2018-11-23 00:27:57,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14133 states to 14133 states and 20101 transitions. [2018-11-23 00:27:57,631 INFO L78 Accepts]: Start accepts. Automaton has 14133 states and 20101 transitions. Word has length 53 [2018-11-23 00:27:57,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:57,632 INFO L480 AbstractCegarLoop]: Abstraction has 14133 states and 20101 transitions. [2018-11-23 00:27:57,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 00:27:57,632 INFO L276 IsEmpty]: Start isEmpty. Operand 14133 states and 20101 transitions. [2018-11-23 00:27:57,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-11-23 00:27:57,633 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:57,633 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:57,634 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:57,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:57,634 INFO L82 PathProgramCache]: Analyzing trace with hash 941207746, now seen corresponding path program 4 times [2018-11-23 00:27:57,634 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:57,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:57,635 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:27:57,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:57,635 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:57,685 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:57,685 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:57,686 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:27:57,686 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:27:57,686 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:27:57,686 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:57,686 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:27:57,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:57,694 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 00:27:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:57,701 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:27:57,704 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:57,705 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:27:57,730 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:57,744 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:27:57,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2018-11-23 00:27:57,745 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:27:57,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 00:27:57,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 00:27:57,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-23 00:27:57,745 INFO L87 Difference]: Start difference. First operand 14133 states and 20101 transitions. Second operand 7 states. [2018-11-23 00:27:57,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:57,942 INFO L93 Difference]: Finished difference Result 20778 states and 29841 transitions. [2018-11-23 00:27:57,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 00:27:57,943 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2018-11-23 00:27:57,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:57,957 INFO L225 Difference]: With dead ends: 20778 [2018-11-23 00:27:57,957 INFO L226 Difference]: Without dead ends: 20777 [2018-11-23 00:27:57,964 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 [2018-11-23 00:27:57,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20777 states. [2018-11-23 00:27:58,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20777 to 15385. [2018-11-23 00:27:58,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15385 states. [2018-11-23 00:27:58,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15385 states to 15385 states and 21885 transitions. [2018-11-23 00:27:58,213 INFO L78 Accepts]: Start accepts. Automaton has 15385 states and 21885 transitions. Word has length 55 [2018-11-23 00:27:58,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:58,213 INFO L480 AbstractCegarLoop]: Abstraction has 15385 states and 21885 transitions. [2018-11-23 00:27:58,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 00:27:58,213 INFO L276 IsEmpty]: Start isEmpty. Operand 15385 states and 21885 transitions. [2018-11-23 00:27:58,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-23 00:27:58,215 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:58,215 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:58,215 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:58,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:58,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1897860808, now seen corresponding path program 5 times [2018-11-23 00:27:58,215 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:58,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:58,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:58,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:58,216 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:58,272 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:58,272 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:58,272 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:27:58,272 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:27:58,272 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:27:58,272 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:58,272 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:27:58,291 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 00:27:58,291 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 00:27:58,312 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-23 00:27:58,312 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:27:58,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:27:58,318 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:58,318 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:27:58,362 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:58,377 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:27:58,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2018-11-23 00:27:58,377 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:27:58,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 00:27:58,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 00:27:58,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-23 00:27:58,378 INFO L87 Difference]: Start difference. First operand 15385 states and 21885 transitions. Second operand 8 states. [2018-11-23 00:27:58,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:58,592 INFO L93 Difference]: Finished difference Result 22701 states and 32845 transitions. [2018-11-23 00:27:58,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 00:27:58,593 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2018-11-23 00:27:58,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:58,611 INFO L225 Difference]: With dead ends: 22701 [2018-11-23 00:27:58,611 INFO L226 Difference]: Without dead ends: 22699 [2018-11-23 00:27:58,616 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-23 00:27:58,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22699 states. [2018-11-23 00:27:58,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22699 to 18977. [2018-11-23 00:27:58,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18977 states. [2018-11-23 00:27:58,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18977 states to 18977 states and 26868 transitions. [2018-11-23 00:27:58,871 INFO L78 Accepts]: Start accepts. Automaton has 18977 states and 26868 transitions. Word has length 58 [2018-11-23 00:27:58,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:58,871 INFO L480 AbstractCegarLoop]: Abstraction has 18977 states and 26868 transitions. [2018-11-23 00:27:58,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 00:27:58,872 INFO L276 IsEmpty]: Start isEmpty. Operand 18977 states and 26868 transitions. [2018-11-23 00:27:58,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-23 00:27:58,873 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:58,873 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:58,874 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:58,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:58,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1695921494, now seen corresponding path program 7 times [2018-11-23 00:27:58,874 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:58,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:58,875 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:27:58,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:58,875 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:58,930 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:58,931 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:58,931 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:27:58,931 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:27:58,931 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:27:58,931 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:58,931 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:27:58,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:58,939 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 00:27:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:58,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:27:58,958 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:58,959 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:27:59,091 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:59,105 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:27:59,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2018-11-23 00:27:59,106 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:27:59,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-23 00:27:59,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-23 00:27:59,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-23 00:27:59,106 INFO L87 Difference]: Start difference. First operand 18977 states and 26868 transitions. Second operand 10 states. [2018-11-23 00:27:59,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:27:59,317 INFO L93 Difference]: Finished difference Result 26255 states and 37782 transitions. [2018-11-23 00:27:59,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 00:27:59,317 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 60 [2018-11-23 00:27:59,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:27:59,337 INFO L225 Difference]: With dead ends: 26255 [2018-11-23 00:27:59,338 INFO L226 Difference]: Without dead ends: 26253 [2018-11-23 00:27:59,342 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-23 00:27:59,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26253 states. [2018-11-23 00:27:59,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26253 to 22315. [2018-11-23 00:27:59,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22315 states. [2018-11-23 00:27:59,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22315 states to 22315 states and 31477 transitions. [2018-11-23 00:27:59,631 INFO L78 Accepts]: Start accepts. Automaton has 22315 states and 31477 transitions. Word has length 60 [2018-11-23 00:27:59,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:27:59,631 INFO L480 AbstractCegarLoop]: Abstraction has 22315 states and 31477 transitions. [2018-11-23 00:27:59,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-23 00:27:59,631 INFO L276 IsEmpty]: Start isEmpty. Operand 22315 states and 31477 transitions. [2018-11-23 00:27:59,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-11-23 00:27:59,632 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:27:59,632 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1] [2018-11-23 00:27:59,633 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:27:59,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:27:59,633 INFO L82 PathProgramCache]: Analyzing trace with hash 2090391817, now seen corresponding path program 6 times [2018-11-23 00:27:59,633 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:27:59,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:59,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:27:59,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:27:59,633 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:27:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:27:59,694 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:59,694 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:59,694 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:27:59,694 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:27:59,694 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:27:59,695 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:27:59,695 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:27:59,705 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 00:27:59,705 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-23 00:27:59,714 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 00:27:59,714 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:27:59,715 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:27:59,719 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:59,720 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:27:59,774 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:27:59,791 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:27:59,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2018-11-23 00:27:59,791 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:27:59,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 00:27:59,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 00:27:59,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-23 00:27:59,792 INFO L87 Difference]: Start difference. First operand 22315 states and 31477 transitions. Second operand 9 states. [2018-11-23 00:28:00,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:28:00,075 INFO L93 Difference]: Finished difference Result 32959 states and 46936 transitions. [2018-11-23 00:28:00,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 00:28:00,076 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2018-11-23 00:28:00,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:28:00,101 INFO L225 Difference]: With dead ends: 32959 [2018-11-23 00:28:00,101 INFO L226 Difference]: Without dead ends: 32958 [2018-11-23 00:28:00,106 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-23 00:28:00,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32958 states. [2018-11-23 00:28:00,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32958 to 23709. [2018-11-23 00:28:00,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23709 states. [2018-11-23 00:28:00,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23709 states to 23709 states and 33466 transitions. [2018-11-23 00:28:00,439 INFO L78 Accepts]: Start accepts. Automaton has 23709 states and 33466 transitions. Word has length 61 [2018-11-23 00:28:00,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:28:00,440 INFO L480 AbstractCegarLoop]: Abstraction has 23709 states and 33466 transitions. [2018-11-23 00:28:00,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 00:28:00,440 INFO L276 IsEmpty]: Start isEmpty. Operand 23709 states and 33466 transitions. [2018-11-23 00:28:00,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-11-23 00:28:00,442 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:28:00,442 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1] [2018-11-23 00:28:00,442 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:28:00,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:28:00,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1521886379, now seen corresponding path program 5 times [2018-11-23 00:28:00,442 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:28:00,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:00,443 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:28:00,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:00,443 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:28:00,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:28:00,500 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:00,500 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:00,501 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:28:00,501 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:28:00,501 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:28:00,501 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:00,501 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:28:00,514 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 00:28:00,514 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 00:28:00,530 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-23 00:28:00,530 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:28:00,531 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:28:00,538 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:00,538 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:28:00,585 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:00,599 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:28:00,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2018-11-23 00:28:00,600 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:28:00,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 00:28:00,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 00:28:00,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-23 00:28:00,600 INFO L87 Difference]: Start difference. First operand 23709 states and 33466 transitions. Second operand 8 states. [2018-11-23 00:28:00,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:28:00,886 INFO L93 Difference]: Finished difference Result 33673 states and 48022 transitions. [2018-11-23 00:28:00,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 00:28:00,887 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2018-11-23 00:28:00,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:28:00,917 INFO L225 Difference]: With dead ends: 33673 [2018-11-23 00:28:00,917 INFO L226 Difference]: Without dead ends: 33672 [2018-11-23 00:28:00,924 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-23 00:28:00,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33672 states. [2018-11-23 00:28:01,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33672 to 25273. [2018-11-23 00:28:01,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25273 states. [2018-11-23 00:28:01,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25273 states to 25273 states and 35688 transitions. [2018-11-23 00:28:01,336 INFO L78 Accepts]: Start accepts. Automaton has 25273 states and 35688 transitions. Word has length 65 [2018-11-23 00:28:01,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:28:01,337 INFO L480 AbstractCegarLoop]: Abstraction has 25273 states and 35688 transitions. [2018-11-23 00:28:01,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 00:28:01,337 INFO L276 IsEmpty]: Start isEmpty. Operand 25273 states and 35688 transitions. [2018-11-23 00:28:01,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-23 00:28:01,340 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:28:01,340 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1] [2018-11-23 00:28:01,340 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:28:01,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:28:01,340 INFO L82 PathProgramCache]: Analyzing trace with hash -690121846, now seen corresponding path program 8 times [2018-11-23 00:28:01,340 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:28:01,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:01,341 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:28:01,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:01,341 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:28:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:28:01,421 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:01,421 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:01,421 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:28:01,421 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:28:01,422 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:28:01,422 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:01,422 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:28:01,439 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 00:28:01,440 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 00:28:01,459 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-11-23 00:28:01,460 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:28:01,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:28:01,468 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:01,468 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:28:01,565 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:01,593 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:28:01,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2018-11-23 00:28:01,593 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:28:01,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 00:28:01,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 00:28:01,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-11-23 00:28:01,594 INFO L87 Difference]: Start difference. First operand 25273 states and 35688 transitions. Second operand 11 states. [2018-11-23 00:28:01,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:28:01,940 INFO L93 Difference]: Finished difference Result 34134 states and 48972 transitions. [2018-11-23 00:28:01,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-23 00:28:01,941 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2018-11-23 00:28:01,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:28:01,967 INFO L225 Difference]: With dead ends: 34134 [2018-11-23 00:28:01,967 INFO L226 Difference]: Without dead ends: 34132 [2018-11-23 00:28:01,973 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-11-23 00:28:01,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34132 states. [2018-11-23 00:28:02,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34132 to 29349. [2018-11-23 00:28:02,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29349 states. [2018-11-23 00:28:02,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29349 states to 29349 states and 41310 transitions. [2018-11-23 00:28:02,430 INFO L78 Accepts]: Start accepts. Automaton has 29349 states and 41310 transitions. Word has length 67 [2018-11-23 00:28:02,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:28:02,430 INFO L480 AbstractCegarLoop]: Abstraction has 29349 states and 41310 transitions. [2018-11-23 00:28:02,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 00:28:02,430 INFO L276 IsEmpty]: Start isEmpty. Operand 29349 states and 41310 transitions. [2018-11-23 00:28:02,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-23 00:28:02,432 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:28:02,433 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2018-11-23 00:28:02,433 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:28:02,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:28:02,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1044856365, now seen corresponding path program 6 times [2018-11-23 00:28:02,433 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:28:02,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:02,434 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:28:02,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:02,434 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:28:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:28:02,496 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:02,496 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:02,496 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:28:02,496 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:28:02,496 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:28:02,496 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:02,496 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:28:02,517 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 00:28:02,517 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-23 00:28:02,528 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 00:28:02,528 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:28:02,529 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:28:02,533 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:02,533 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:28:02,597 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:02,612 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:28:02,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2018-11-23 00:28:02,612 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:28:02,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 00:28:02,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 00:28:02,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-23 00:28:02,613 INFO L87 Difference]: Start difference. First operand 29349 states and 41310 transitions. Second operand 9 states. [2018-11-23 00:28:02,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:28:02,916 INFO L93 Difference]: Finished difference Result 41884 states and 59975 transitions. [2018-11-23 00:28:02,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 00:28:02,916 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2018-11-23 00:28:02,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:28:02,949 INFO L225 Difference]: With dead ends: 41884 [2018-11-23 00:28:02,949 INFO L226 Difference]: Without dead ends: 41882 [2018-11-23 00:28:02,957 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-23 00:28:02,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41882 states. [2018-11-23 00:28:03,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41882 to 35469. [2018-11-23 00:28:03,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35469 states. [2018-11-23 00:28:03,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35469 states to 35469 states and 49722 transitions. [2018-11-23 00:28:03,451 INFO L78 Accepts]: Start accepts. Automaton has 35469 states and 49722 transitions. Word has length 67 [2018-11-23 00:28:03,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:28:03,451 INFO L480 AbstractCegarLoop]: Abstraction has 35469 states and 49722 transitions. [2018-11-23 00:28:03,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 00:28:03,451 INFO L276 IsEmpty]: Start isEmpty. Operand 35469 states and 49722 transitions. [2018-11-23 00:28:03,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-11-23 00:28:03,453 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:28:03,454 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1] [2018-11-23 00:28:03,454 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:28:03,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:28:03,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1351429389, now seen corresponding path program 7 times [2018-11-23 00:28:03,454 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:28:03,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:03,455 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:28:03,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:03,455 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:28:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:28:03,530 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:03,531 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:03,531 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:28:03,531 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:28:03,531 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:28:03,531 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:03,531 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:28:03,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:28:03,541 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 00:28:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:28:03,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:28:03,560 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:03,561 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:28:03,639 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:03,653 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:28:03,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2018-11-23 00:28:03,653 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:28:03,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-23 00:28:03,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-23 00:28:03,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-23 00:28:03,654 INFO L87 Difference]: Start difference. First operand 35469 states and 49722 transitions. Second operand 10 states. [2018-11-23 00:28:04,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:28:04,145 INFO L93 Difference]: Finished difference Result 51133 states and 72401 transitions. [2018-11-23 00:28:04,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 00:28:04,145 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2018-11-23 00:28:04,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:28:04,190 INFO L225 Difference]: With dead ends: 51133 [2018-11-23 00:28:04,190 INFO L226 Difference]: Without dead ends: 51132 [2018-11-23 00:28:04,199 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-23 00:28:04,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51132 states. [2018-11-23 00:28:04,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51132 to 37265. [2018-11-23 00:28:04,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37265 states. [2018-11-23 00:28:04,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37265 states to 37265 states and 52275 transitions. [2018-11-23 00:28:04,763 INFO L78 Accepts]: Start accepts. Automaton has 37265 states and 52275 transitions. Word has length 69 [2018-11-23 00:28:04,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:28:04,763 INFO L480 AbstractCegarLoop]: Abstraction has 37265 states and 52275 transitions. [2018-11-23 00:28:04,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-23 00:28:04,763 INFO L276 IsEmpty]: Start isEmpty. Operand 37265 states and 52275 transitions. [2018-11-23 00:28:04,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-11-23 00:28:04,766 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:28:04,766 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1] [2018-11-23 00:28:04,766 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:28:04,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:28:04,766 INFO L82 PathProgramCache]: Analyzing trace with hash -2049109290, now seen corresponding path program 9 times [2018-11-23 00:28:04,766 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:28:04,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:04,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:28:04,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:04,767 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:28:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:28:04,838 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:04,839 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:04,839 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:28:04,839 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:28:04,839 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:28:04,839 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:04,839 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:28:04,849 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 00:28:04,849 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-23 00:28:04,870 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 00:28:04,870 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:28:04,872 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:28:04,876 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:04,876 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:28:04,970 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:04,985 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:28:04,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2018-11-23 00:28:04,985 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:28:04,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-23 00:28:04,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-23 00:28:04,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-23 00:28:04,985 INFO L87 Difference]: Start difference. First operand 37265 states and 52275 transitions. Second operand 12 states. [2018-11-23 00:28:05,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:28:05,443 INFO L93 Difference]: Finished difference Result 49303 states and 70258 transitions. [2018-11-23 00:28:05,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-23 00:28:05,444 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 74 [2018-11-23 00:28:05,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:28:05,486 INFO L225 Difference]: With dead ends: 49303 [2018-11-23 00:28:05,486 INFO L226 Difference]: Without dead ends: 49301 [2018-11-23 00:28:05,493 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-23 00:28:05,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49301 states. [2018-11-23 00:28:06,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49301 to 42817. [2018-11-23 00:28:06,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42817 states. [2018-11-23 00:28:06,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42817 states to 42817 states and 59893 transitions. [2018-11-23 00:28:06,073 INFO L78 Accepts]: Start accepts. Automaton has 42817 states and 59893 transitions. Word has length 74 [2018-11-23 00:28:06,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:28:06,074 INFO L480 AbstractCegarLoop]: Abstraction has 42817 states and 59893 transitions. [2018-11-23 00:28:06,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-23 00:28:06,074 INFO L276 IsEmpty]: Start isEmpty. Operand 42817 states and 59893 transitions. [2018-11-23 00:28:06,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-11-23 00:28:06,076 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:28:06,076 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1] [2018-11-23 00:28:06,077 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:28:06,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:28:06,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1528834600, now seen corresponding path program 6 times [2018-11-23 00:28:06,077 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:28:06,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:06,078 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:28:06,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:06,078 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:28:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:28:06,150 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:06,151 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:06,151 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:28:06,151 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:28:06,151 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:28:06,151 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:06,151 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:28:06,163 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 00:28:06,163 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-23 00:28:06,191 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 00:28:06,191 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:28:06,192 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:28:06,200 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:06,201 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:28:06,255 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:06,278 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:28:06,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2018-11-23 00:28:06,278 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:28:06,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 00:28:06,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 00:28:06,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-23 00:28:06,279 INFO L87 Difference]: Start difference. First operand 42817 states and 59893 transitions. Second operand 9 states. [2018-11-23 00:28:06,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:28:06,756 INFO L93 Difference]: Finished difference Result 59106 states and 83567 transitions. [2018-11-23 00:28:06,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 00:28:06,756 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2018-11-23 00:28:06,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:28:06,811 INFO L225 Difference]: With dead ends: 59106 [2018-11-23 00:28:06,811 INFO L226 Difference]: Without dead ends: 59105 [2018-11-23 00:28:06,824 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-23 00:28:06,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59105 states. [2018-11-23 00:28:07,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59105 to 45009. [2018-11-23 00:28:07,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45009 states. [2018-11-23 00:28:07,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45009 states to 45009 states and 62991 transitions. [2018-11-23 00:28:07,592 INFO L78 Accepts]: Start accepts. Automaton has 45009 states and 62991 transitions. Word has length 75 [2018-11-23 00:28:07,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:28:07,592 INFO L480 AbstractCegarLoop]: Abstraction has 45009 states and 62991 transitions. [2018-11-23 00:28:07,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 00:28:07,592 INFO L276 IsEmpty]: Start isEmpty. Operand 45009 states and 62991 transitions. [2018-11-23 00:28:07,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-11-23 00:28:07,596 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:28:07,596 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2018-11-23 00:28:07,597 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:28:07,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:28:07,597 INFO L82 PathProgramCache]: Analyzing trace with hash -427799768, now seen corresponding path program 7 times [2018-11-23 00:28:07,597 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:28:07,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:07,598 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:28:07,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:07,598 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:28:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:28:07,663 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:07,663 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:07,664 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:28:07,664 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:28:07,664 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:28:07,664 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:07,664 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:28:07,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:28:07,673 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 00:28:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:28:07,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:28:07,689 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:07,689 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:28:07,772 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:07,787 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:28:07,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2018-11-23 00:28:07,787 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:28:07,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-23 00:28:07,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-23 00:28:07,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-23 00:28:07,788 INFO L87 Difference]: Start difference. First operand 45009 states and 62991 transitions. Second operand 10 states. [2018-11-23 00:28:08,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:28:08,302 INFO L93 Difference]: Finished difference Result 62469 states and 88924 transitions. [2018-11-23 00:28:08,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 00:28:08,303 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 76 [2018-11-23 00:28:08,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:28:08,369 INFO L225 Difference]: With dead ends: 62469 [2018-11-23 00:28:08,369 INFO L226 Difference]: Without dead ends: 62467 [2018-11-23 00:28:08,380 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-23 00:28:08,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62467 states. [2018-11-23 00:28:09,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62467 to 53493. [2018-11-23 00:28:09,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53493 states. [2018-11-23 00:28:09,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53493 states to 53493 states and 74602 transitions. [2018-11-23 00:28:09,293 INFO L78 Accepts]: Start accepts. Automaton has 53493 states and 74602 transitions. Word has length 76 [2018-11-23 00:28:09,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:28:09,293 INFO L480 AbstractCegarLoop]: Abstraction has 53493 states and 74602 transitions. [2018-11-23 00:28:09,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-23 00:28:09,293 INFO L276 IsEmpty]: Start isEmpty. Operand 53493 states and 74602 transitions. [2018-11-23 00:28:09,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-11-23 00:28:09,297 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:28:09,297 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1] [2018-11-23 00:28:09,297 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:28:09,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:28:09,297 INFO L82 PathProgramCache]: Analyzing trace with hash 265372381, now seen corresponding path program 8 times [2018-11-23 00:28:09,297 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:28:09,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:09,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:28:09,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:09,298 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:28:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:28:09,356 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:09,356 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:09,356 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:28:09,356 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:28:09,356 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:28:09,356 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:09,356 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:28:09,365 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 00:28:09,365 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 00:28:09,379 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-11-23 00:28:09,379 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:28:09,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:28:09,385 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:09,386 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:28:09,466 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:09,481 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:28:09,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2018-11-23 00:28:09,481 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:28:09,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 00:28:09,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 00:28:09,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-11-23 00:28:09,482 INFO L87 Difference]: Start difference. First operand 53493 states and 74602 transitions. Second operand 11 states. [2018-11-23 00:28:10,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:28:10,062 INFO L93 Difference]: Finished difference Result 75502 states and 106384 transitions. [2018-11-23 00:28:10,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-23 00:28:10,062 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 77 [2018-11-23 00:28:10,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:28:10,137 INFO L225 Difference]: With dead ends: 75502 [2018-11-23 00:28:10,137 INFO L226 Difference]: Without dead ends: 75501 [2018-11-23 00:28:10,151 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-11-23 00:28:10,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75501 states. [2018-11-23 00:28:10,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75501 to 55737. [2018-11-23 00:28:10,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55737 states. [2018-11-23 00:28:11,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55737 states to 55737 states and 77782 transitions. [2018-11-23 00:28:11,046 INFO L78 Accepts]: Start accepts. Automaton has 55737 states and 77782 transitions. Word has length 77 [2018-11-23 00:28:11,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:28:11,046 INFO L480 AbstractCegarLoop]: Abstraction has 55737 states and 77782 transitions. [2018-11-23 00:28:11,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 00:28:11,046 INFO L276 IsEmpty]: Start isEmpty. Operand 55737 states and 77782 transitions. [2018-11-23 00:28:11,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-11-23 00:28:11,049 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:28:11,049 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1] [2018-11-23 00:28:11,049 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:28:11,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:28:11,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1444546058, now seen corresponding path program 10 times [2018-11-23 00:28:11,050 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:28:11,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:11,050 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:28:11,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:11,050 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:28:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:28:11,144 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:11,145 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:11,145 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:28:11,145 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:28:11,145 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:28:11,145 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:11,145 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:28:11,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:28:11,156 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 00:28:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:28:11,171 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:28:11,179 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:11,179 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:28:11,468 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:11,482 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:28:11,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2018-11-23 00:28:11,482 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:28:11,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-23 00:28:11,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-23 00:28:11,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-11-23 00:28:11,483 INFO L87 Difference]: Start difference. First operand 55737 states and 77782 transitions. Second operand 13 states. [2018-11-23 00:28:12,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:28:12,031 INFO L93 Difference]: Finished difference Result 72432 states and 102654 transitions. [2018-11-23 00:28:12,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-23 00:28:12,031 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2018-11-23 00:28:12,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:28:12,096 INFO L225 Difference]: With dead ends: 72432 [2018-11-23 00:28:12,096 INFO L226 Difference]: Without dead ends: 72430 [2018-11-23 00:28:12,110 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-11-23 00:28:12,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72430 states. [2018-11-23 00:28:12,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72430 to 63455. [2018-11-23 00:28:12,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63455 states. [2018-11-23 00:28:13,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63455 states to 63455 states and 88331 transitions. [2018-11-23 00:28:13,012 INFO L78 Accepts]: Start accepts. Automaton has 63455 states and 88331 transitions. Word has length 81 [2018-11-23 00:28:13,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:28:13,012 INFO L480 AbstractCegarLoop]: Abstraction has 63455 states and 88331 transitions. [2018-11-23 00:28:13,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-23 00:28:13,012 INFO L276 IsEmpty]: Start isEmpty. Operand 63455 states and 88331 transitions. [2018-11-23 00:28:13,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-11-23 00:28:13,016 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:28:13,016 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2018-11-23 00:28:13,016 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:28:13,016 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:28:13,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1692281031, now seen corresponding path program 9 times [2018-11-23 00:28:13,016 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:28:13,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:13,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:28:13,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:13,017 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:28:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:28:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:13,116 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:13,116 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:28:13,116 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:28:13,116 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:28:13,116 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:13,116 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:28:13,129 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 00:28:13,129 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-23 00:28:13,142 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 00:28:13,142 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:28:13,144 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:28:13,154 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:13,154 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:28:13,250 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:13,265 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:28:13,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2018-11-23 00:28:13,265 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:28:13,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-23 00:28:13,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-23 00:28:13,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-23 00:28:13,265 INFO L87 Difference]: Start difference. First operand 63455 states and 88331 transitions. Second operand 12 states. [2018-11-23 00:28:14,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:28:14,024 INFO L93 Difference]: Finished difference Result 87915 states and 123650 transitions. [2018-11-23 00:28:14,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-23 00:28:14,025 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 85 [2018-11-23 00:28:14,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:28:14,109 INFO L225 Difference]: With dead ends: 87915 [2018-11-23 00:28:14,109 INFO L226 Difference]: Without dead ends: 87914 [2018-11-23 00:28:14,123 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-23 00:28:14,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87914 states. [2018-11-23 00:28:15,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87914 to 65699. [2018-11-23 00:28:15,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65699 states. [2018-11-23 00:28:15,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65699 states to 65699 states and 91511 transitions. [2018-11-23 00:28:15,164 INFO L78 Accepts]: Start accepts. Automaton has 65699 states and 91511 transitions. Word has length 85 [2018-11-23 00:28:15,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:28:15,164 INFO L480 AbstractCegarLoop]: Abstraction has 65699 states and 91511 transitions. [2018-11-23 00:28:15,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-23 00:28:15,165 INFO L276 IsEmpty]: Start isEmpty. Operand 65699 states and 91511 transitions. [2018-11-23 00:28:15,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-11-23 00:28:15,169 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:28:15,169 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1] [2018-11-23 00:28:15,170 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:28:15,170 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:28:15,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1685753485, now seen corresponding path program 8 times [2018-11-23 00:28:15,170 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:28:15,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:15,171 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:28:15,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:15,171 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:28:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:28:15,225 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:15,225 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:15,225 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:28:15,225 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:28:15,225 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:28:15,225 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:15,225 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:28:15,233 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 00:28:15,233 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 00:28:15,247 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-11-23 00:28:15,247 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:28:15,248 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:28:15,254 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:15,254 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:28:15,320 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:15,335 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:28:15,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2018-11-23 00:28:15,335 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:28:15,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 00:28:15,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 00:28:15,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-11-23 00:28:15,336 INFO L87 Difference]: Start difference. First operand 65699 states and 91511 transitions. Second operand 11 states. [2018-11-23 00:28:16,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:28:16,063 INFO L93 Difference]: Finished difference Result 88656 states and 125565 transitions. [2018-11-23 00:28:16,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-23 00:28:16,063 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 85 [2018-11-23 00:28:16,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:28:16,155 INFO L225 Difference]: With dead ends: 88656 [2018-11-23 00:28:16,155 INFO L226 Difference]: Without dead ends: 88654 [2018-11-23 00:28:16,169 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-11-23 00:28:16,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88654 states. [2018-11-23 00:28:17,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88654 to 76293. [2018-11-23 00:28:17,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76293 states. [2018-11-23 00:28:17,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76293 states to 76293 states and 105928 transitions. [2018-11-23 00:28:17,449 INFO L78 Accepts]: Start accepts. Automaton has 76293 states and 105928 transitions. Word has length 85 [2018-11-23 00:28:17,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:28:17,449 INFO L480 AbstractCegarLoop]: Abstraction has 76293 states and 105928 transitions. [2018-11-23 00:28:17,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 00:28:17,449 INFO L276 IsEmpty]: Start isEmpty. Operand 76293 states and 105928 transitions. [2018-11-23 00:28:17,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-11-23 00:28:17,454 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:28:17,454 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1] [2018-11-23 00:28:17,454 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:28:17,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:28:17,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1536406213, now seen corresponding path program 7 times [2018-11-23 00:28:17,454 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:28:17,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:17,455 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:28:17,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:17,455 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:28:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:28:17,541 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:17,541 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:17,541 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:28:17,541 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:28:17,541 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:28:17,541 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:17,541 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:28:17,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:28:17,551 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 00:28:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:28:17,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:28:17,569 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:17,570 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:28:17,661 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:17,676 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:28:17,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2018-11-23 00:28:17,676 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:28:17,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-23 00:28:17,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-23 00:28:17,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-23 00:28:17,677 INFO L87 Difference]: Start difference. First operand 76293 states and 105928 transitions. Second operand 10 states. [2018-11-23 00:28:18,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:28:18,565 INFO L93 Difference]: Finished difference Result 109927 states and 154225 transitions. [2018-11-23 00:28:18,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 00:28:18,565 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2018-11-23 00:28:18,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:28:18,679 INFO L225 Difference]: With dead ends: 109927 [2018-11-23 00:28:18,679 INFO L226 Difference]: Without dead ends: 109926 [2018-11-23 00:28:18,697 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-23 00:28:18,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109926 states. [2018-11-23 00:28:20,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109926 to 80157. [2018-11-23 00:28:20,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80157 states. [2018-11-23 00:28:20,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80157 states to 80157 states and 111367 transitions. [2018-11-23 00:28:20,103 INFO L78 Accepts]: Start accepts. Automaton has 80157 states and 111367 transitions. Word has length 85 [2018-11-23 00:28:20,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:28:20,104 INFO L480 AbstractCegarLoop]: Abstraction has 80157 states and 111367 transitions. [2018-11-23 00:28:20,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-23 00:28:20,104 INFO L276 IsEmpty]: Start isEmpty. Operand 80157 states and 111367 transitions. [2018-11-23 00:28:20,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-11-23 00:28:20,110 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:28:20,110 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1] [2018-11-23 00:28:20,110 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:28:20,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:28:20,110 INFO L82 PathProgramCache]: Analyzing trace with hash -508374954, now seen corresponding path program 11 times [2018-11-23 00:28:20,110 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:28:20,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:20,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:28:20,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:20,111 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:28:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:28:20,186 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 451 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:20,186 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:20,186 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:28:20,186 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:28:20,186 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:28:20,186 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:20,186 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:28:20,194 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 00:28:20,195 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 00:28:20,211 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-11-23 00:28:20,211 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:28:20,213 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:28:20,219 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 451 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:20,219 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:28:20,343 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 451 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:20,357 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:28:20,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2018-11-23 00:28:20,357 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:28:20,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-23 00:28:20,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-23 00:28:20,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-11-23 00:28:20,358 INFO L87 Difference]: Start difference. First operand 80157 states and 111367 transitions. Second operand 14 states. [2018-11-23 00:28:21,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:28:21,202 INFO L93 Difference]: Finished difference Result 102547 states and 144645 transitions. [2018-11-23 00:28:21,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-23 00:28:21,203 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 88 [2018-11-23 00:28:21,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:28:21,304 INFO L225 Difference]: With dead ends: 102547 [2018-11-23 00:28:21,304 INFO L226 Difference]: Without dead ends: 102545 [2018-11-23 00:28:21,324 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-11-23 00:28:21,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102545 states. [2018-11-23 00:28:23,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102545 to 90527. [2018-11-23 00:28:23,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90527 states. [2018-11-23 00:28:23,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90527 states to 90527 states and 125495 transitions. [2018-11-23 00:28:23,091 INFO L78 Accepts]: Start accepts. Automaton has 90527 states and 125495 transitions. Word has length 88 [2018-11-23 00:28:23,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:28:23,092 INFO L480 AbstractCegarLoop]: Abstraction has 90527 states and 125495 transitions. [2018-11-23 00:28:23,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-23 00:28:23,092 INFO L276 IsEmpty]: Start isEmpty. Operand 90527 states and 125495 transitions. [2018-11-23 00:28:23,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-11-23 00:28:23,098 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:28:23,098 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1] [2018-11-23 00:28:23,098 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:28:23,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:28:23,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1413249871, now seen corresponding path program 10 times [2018-11-23 00:28:23,099 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:28:23,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:23,099 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:28:23,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:23,099 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:28:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:28:23,169 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:23,169 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:23,169 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:28:23,169 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:28:23,169 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:28:23,169 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:23,170 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:28:23,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:28:23,178 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 00:28:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:28:23,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:28:23,198 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:23,198 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:28:23,307 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:23,321 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:28:23,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2018-11-23 00:28:23,322 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:28:23,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-23 00:28:23,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-23 00:28:23,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-11-23 00:28:23,322 INFO L87 Difference]: Start difference. First operand 90527 states and 125495 transitions. Second operand 13 states. [2018-11-23 00:28:24,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:28:24,375 INFO L93 Difference]: Finished difference Result 123345 states and 172777 transitions. [2018-11-23 00:28:24,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-23 00:28:24,375 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 93 [2018-11-23 00:28:24,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:28:24,499 INFO L225 Difference]: With dead ends: 123345 [2018-11-23 00:28:24,499 INFO L226 Difference]: Without dead ends: 123344 [2018-11-23 00:28:24,522 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-11-23 00:28:24,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123344 states. [2018-11-23 00:28:26,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123344 to 93265. [2018-11-23 00:28:26,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93265 states. [2018-11-23 00:28:26,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93265 states to 93265 states and 129365 transitions. [2018-11-23 00:28:26,146 INFO L78 Accepts]: Start accepts. Automaton has 93265 states and 129365 transitions. Word has length 93 [2018-11-23 00:28:26,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:28:26,146 INFO L480 AbstractCegarLoop]: Abstraction has 93265 states and 129365 transitions. [2018-11-23 00:28:26,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-23 00:28:26,146 INFO L276 IsEmpty]: Start isEmpty. Operand 93265 states and 129365 transitions. [2018-11-23 00:28:26,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-11-23 00:28:26,152 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:28:26,152 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1] [2018-11-23 00:28:26,152 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:28:26,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:28:26,152 INFO L82 PathProgramCache]: Analyzing trace with hash 879701896, now seen corresponding path program 9 times [2018-11-23 00:28:26,152 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:28:26,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:26,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:28:26,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:26,153 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:28:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:28:26,217 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:26,218 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:26,218 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:28:26,218 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:28:26,218 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:28:26,218 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:26,218 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:28:26,226 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 00:28:26,226 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-23 00:28:26,237 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 00:28:26,237 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:28:26,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:28:26,244 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:26,244 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:28:26,529 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:26,544 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:28:26,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2018-11-23 00:28:26,544 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:28:26,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-23 00:28:26,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-23 00:28:26,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-23 00:28:26,545 INFO L87 Difference]: Start difference. First operand 93265 states and 129365 transitions. Second operand 12 states. [2018-11-23 00:28:27,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:28:27,580 INFO L93 Difference]: Finished difference Result 123303 states and 173838 transitions. [2018-11-23 00:28:27,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-23 00:28:27,581 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2018-11-23 00:28:27,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:28:27,714 INFO L225 Difference]: With dead ends: 123303 [2018-11-23 00:28:27,714 INFO L226 Difference]: Without dead ends: 123301 [2018-11-23 00:28:27,735 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-23 00:28:27,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123301 states. [2018-11-23 00:28:29,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123301 to 107157. [2018-11-23 00:28:29,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107157 states. [2018-11-23 00:28:29,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107157 states to 107157 states and 148218 transitions. [2018-11-23 00:28:29,340 INFO L78 Accepts]: Start accepts. Automaton has 107157 states and 148218 transitions. Word has length 94 [2018-11-23 00:28:29,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:28:29,340 INFO L480 AbstractCegarLoop]: Abstraction has 107157 states and 148218 transitions. [2018-11-23 00:28:29,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-23 00:28:29,340 INFO L276 IsEmpty]: Start isEmpty. Operand 107157 states and 148218 transitions. [2018-11-23 00:28:29,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-11-23 00:28:29,345 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:28:29,345 INFO L402 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2018-11-23 00:28:29,346 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:28:29,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:28:29,346 INFO L82 PathProgramCache]: Analyzing trace with hash 526129290, now seen corresponding path program 12 times [2018-11-23 00:28:29,346 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:28:29,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:29,346 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:28:29,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:29,346 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:28:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:28:29,419 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 517 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-23 00:28:29,419 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 00:28:29,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-11-23 00:28:29,419 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 00:28:29,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-23 00:28:29,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-23 00:28:29,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-11-23 00:28:29,420 INFO L87 Difference]: Start difference. First operand 107157 states and 148218 transitions. Second operand 13 states. [2018-11-23 00:28:29,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:28:29,950 INFO L93 Difference]: Finished difference Result 125640 states and 173038 transitions. [2018-11-23 00:28:29,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-23 00:28:29,950 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2018-11-23 00:28:29,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:28:29,951 INFO L225 Difference]: With dead ends: 125640 [2018-11-23 00:28:29,951 INFO L226 Difference]: Without dead ends: 423 [2018-11-23 00:28:30,024 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-11-23 00:28:30,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-11-23 00:28:30,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 226. [2018-11-23 00:28:30,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-11-23 00:28:30,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 264 transitions. [2018-11-23 00:28:30,030 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 264 transitions. Word has length 95 [2018-11-23 00:28:30,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:28:30,030 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 264 transitions. [2018-11-23 00:28:30,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-23 00:28:30,030 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 264 transitions. [2018-11-23 00:28:30,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-11-23 00:28:30,030 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:28:30,030 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1] [2018-11-23 00:28:30,030 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:28:30,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:28:30,030 INFO L82 PathProgramCache]: Analyzing trace with hash 270660750, now seen corresponding path program 8 times [2018-11-23 00:28:30,031 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:28:30,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:30,031 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:28:30,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:30,031 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:28:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:28:30,095 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:30,095 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:30,095 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:28:30,095 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:28:30,095 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:28:30,095 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:30,095 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:28:30,103 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 00:28:30,103 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 00:28:30,118 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-11-23 00:28:30,118 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:28:30,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:28:30,126 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:30,126 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:28:30,195 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:30,209 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:28:30,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2018-11-23 00:28:30,209 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:28:30,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 00:28:30,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 00:28:30,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-11-23 00:28:30,210 INFO L87 Difference]: Start difference. First operand 226 states and 264 transitions. Second operand 11 states. [2018-11-23 00:28:30,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:28:30,232 INFO L93 Difference]: Finished difference Result 247 states and 284 transitions. [2018-11-23 00:28:30,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-23 00:28:30,232 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 95 [2018-11-23 00:28:30,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:28:30,233 INFO L225 Difference]: With dead ends: 247 [2018-11-23 00:28:30,233 INFO L226 Difference]: Without dead ends: 106 [2018-11-23 00:28:30,233 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-11-23 00:28:30,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-11-23 00:28:30,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-11-23 00:28:30,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-11-23 00:28:30,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 105 transitions. [2018-11-23 00:28:30,235 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 105 transitions. Word has length 95 [2018-11-23 00:28:30,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:28:30,235 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 105 transitions. [2018-11-23 00:28:30,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 00:28:30,235 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 105 transitions. [2018-11-23 00:28:30,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-11-23 00:28:30,235 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 00:28:30,235 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2018-11-23 00:28:30,236 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 00:28:30,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:28:30,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1806118879, now seen corresponding path program 9 times [2018-11-23 00:28:30,236 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 00:28:30,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:30,237 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:28:30,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:28:30,237 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 00:28:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:28:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:30,298 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:30,298 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 00:28:30,298 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 00:28:30,299 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 00:28:30,299 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:28:30,299 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:28:30,305 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 00:28:30,305 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-23 00:28:30,320 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 00:28:30,320 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 00:28:30,321 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:28:30,330 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:30,330 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 00:28:30,422 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:28:30,436 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 00:28:30,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2018-11-23 00:28:30,436 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 00:28:30,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-23 00:28:30,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-23 00:28:30,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-23 00:28:30,437 INFO L87 Difference]: Start difference. First operand 106 states and 105 transitions. Second operand 12 states. [2018-11-23 00:28:30,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:28:30,472 INFO L93 Difference]: Finished difference Result 106 states and 105 transitions. [2018-11-23 00:28:30,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-23 00:28:30,474 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 105 [2018-11-23 00:28:30,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 00:28:30,474 INFO L225 Difference]: With dead ends: 106 [2018-11-23 00:28:30,474 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 00:28:30,475 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-23 00:28:30,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 00:28:30,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 00:28:30,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 00:28:30,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 00:28:30,475 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 105 [2018-11-23 00:28:30,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 00:28:30,476 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 00:28:30,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-23 00:28:30,476 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 00:28:30,476 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 00:28:30,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 00:28:31,290 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:31,386 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:31,389 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:31,532 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:31,874 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:32,164 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:32,233 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:32,245 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:32,317 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:32,383 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:32,449 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:32,492 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:32,683 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:33,190 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:33,191 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:33,211 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:33,213 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:33,221 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:33,288 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:33,434 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:33,456 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:33,520 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:33,528 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:33,619 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:33,693 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:33,766 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:33,781 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:33,802 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:34,225 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:34,755 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:34,841 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:34,907 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:35,047 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:35,140 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:36,163 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:36,356 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:36,366 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:38,197 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:38,463 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:38,558 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:38,810 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:39,316 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:39,346 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:39,408 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:39,593 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:41,571 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:41,917 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:42,064 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:43,453 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:43,716 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:44,649 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:44,989 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:45,078 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:45,325 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:46,587 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:46,824 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:46,933 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:47,096 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:47,391 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:47,428 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:48,214 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:49,110 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:50,012 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:50,336 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:51,386 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:52,359 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:52,445 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:53,438 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:53,621 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:53,939 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:54,391 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:54,733 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:55,518 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:56,546 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 00:28:56,634 WARN L180 SmtUtils]: Spent 26.13 s on a formula simplification. DAG size of input: 2594 DAG size of output: 2228 [2018-11-23 00:29:58,207 WARN L180 SmtUtils]: Spent 1.03 m on a formula simplification. DAG size of input: 2065 DAG size of output: 353 [2018-11-23 00:29:58,211 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 00:29:58,211 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 00:29:58,211 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 00:29:58,211 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 00:29:58,211 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 00:29:58,211 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 00:29:58,211 INFO L448 ceAbstractionStarter]: For program point L27(lines 27 31) no Hoare annotation was computed. [2018-11-23 00:29:58,211 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 13 35) no Hoare annotation was computed. [2018-11-23 00:29:58,211 INFO L448 ceAbstractionStarter]: For program point L23(lines 23 31) no Hoare annotation was computed. [2018-11-23 00:29:58,211 INFO L448 ceAbstractionStarter]: For program point mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2018-11-23 00:29:58,211 INFO L448 ceAbstractionStarter]: For program point L19-2(lines 19 33) no Hoare annotation was computed. [2018-11-23 00:29:58,211 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-23 00:29:58,211 INFO L448 ceAbstractionStarter]: For program point mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 30) no Hoare annotation was computed. [2018-11-23 00:29:58,211 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-11-23 00:29:58,212 INFO L448 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2018-11-23 00:29:58,212 INFO L448 ceAbstractionStarter]: For program point L28-1(line 28) no Hoare annotation was computed. [2018-11-23 00:29:58,212 INFO L448 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-11-23 00:29:58,212 INFO L448 ceAbstractionStarter]: For program point L24-1(line 24) no Hoare annotation was computed. [2018-11-23 00:29:58,212 INFO L448 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-11-23 00:29:58,212 INFO L448 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-11-23 00:29:58,212 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-11-23 00:29:58,212 INFO L448 ceAbstractionStarter]: For program point L29(lines 29 31) no Hoare annotation was computed. [2018-11-23 00:29:58,212 INFO L448 ceAbstractionStarter]: For program point L25(lines 25 31) no Hoare annotation was computed. [2018-11-23 00:29:58,212 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 13 35) no Hoare annotation was computed. [2018-11-23 00:29:58,212 INFO L448 ceAbstractionStarter]: For program point mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2018-11-23 00:29:58,212 INFO L448 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2018-11-23 00:29:58,212 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 13 35) the Hoare annotation is: true [2018-11-23 00:29:58,213 INFO L448 ceAbstractionStarter]: For program point L30-1(line 30) no Hoare annotation was computed. [2018-11-23 00:29:58,213 INFO L448 ceAbstractionStarter]: For program point L26(line 26) no Hoare annotation was computed. [2018-11-23 00:29:58,213 INFO L448 ceAbstractionStarter]: For program point L26-1(line 26) no Hoare annotation was computed. [2018-11-23 00:29:58,213 INFO L448 ceAbstractionStarter]: For program point L22(lines 22 32) no Hoare annotation was computed. [2018-11-23 00:29:58,215 INFO L444 ceAbstractionStarter]: At program point L22-1(lines 19 33) the Hoare annotation is: (let ((.cse66 (<= 0 (+ main_~x~0 2147483648))) (.cse1 (<= 0 main_~i~0)) (.cse6 (<= main_~N~0 10)) (.cse59 (<= 0 (+ main_~y~0 2147483648)))) (let ((.cse11 (<= 0 (+ main_~x~0 4))) (.cse13 (<= 0 (+ main_~x~0 2))) (.cse16 (and .cse66 .cse1 .cse6 .cse59))) (let ((.cse24 (<= main_~y~0 2)) (.cse15 (<= 0 (+ main_~y~0 1))) (.cse7 (<= 0 (+ main_~x~0 1))) (.cse9 (<= main_~y~0 0)) (.cse20 (<= main_~y~0 4)) (.cse36 (<= 0 (+ main_~y~0 2))) (.cse27 (<= main_~y~0 3)) (.cse42 (and .cse13 .cse16)) (.cse35 (<= 0 (+ main_~x~0 5))) (.cse4 (<= main_~x~0 0)) (.cse0 (<= 0 (+ main_~x~0 3))) (.cse3 (<= 0 main_~y~0)) (.cse63 (and .cse11 .cse16))) (let ((.cse48 (and .cse3 .cse63)) (.cse8 (<= main_~N~0 (+ main_~i~0 9))) (.cse40 (<= main_~y~0 9)) (.cse47 (<= main_~x~0 8)) (.cse32 (and .cse0 .cse16)) (.cse61 (and .cse1 .cse35 .cse4 .cse6 .cse59)) (.cse25 (<= main_~y~0 5)) (.cse43 (<= main_~x~0 9)) (.cse17 (and .cse42 .cse3)) (.cse60 (and (and .cse16 .cse3 .cse27) .cse4)) (.cse39 (and .cse66 .cse1 .cse36 .cse4 .cse6)) (.cse57 (<= 0 (+ main_~x~0 9))) (.cse49 (<= main_~x~0 3)) (.cse56 (<= main_~x~0 7)) (.cse50 (<= 0 (+ main_~y~0 5))) (.cse52 (<= main_~x~0 5)) (.cse28 (<= 0 (+ main_~x~0 6))) (.cse65 (and .cse20 .cse16 .cse4)) (.cse14 (<= main_~N~0 (+ main_~i~0 7))) (.cse19 (<= main_~y~0 8)) (.cse64 (and .cse0 .cse1 .cse3 .cse6)) (.cse34 (<= main_~y~0 6)) (.cse41 (and .cse1 .cse7 .cse4 .cse6 .cse59 .cse9)) (.cse55 (<= 0 (+ main_~y~0 6))) (.cse53 (<= 0 (+ main_~y~0 7))) (.cse23 (<= main_~x~0 1)) (.cse45 (<= main_~N~0 (+ main_~i~0 8))) (.cse26 (<= main_~N~0 (+ main_~i~0 5))) (.cse51 (and .cse13 .cse1 .cse4 .cse6 .cse59 .cse9)) (.cse33 (<= 0 (+ main_~y~0 3))) (.cse29 (<= main_~N~0 (+ main_~i~0 3))) (.cse2 (<= main_~N~0 (+ main_~i~0 6))) (.cse38 (<= main_~x~0 4)) (.cse30 (<= 0 (+ main_~x~0 8))) (.cse5 (<= main_~y~0 1)) (.cse12 (<= main_~N~0 (+ main_~i~0 4))) (.cse58 (and .cse66 .cse15 .cse1 .cse6)) (.cse46 (<= main_~x~0 6)) (.cse18 (<= main_~N~0 main_~i~0)) (.cse31 (<= main_~N~0 (+ main_~i~0 2))) (.cse44 (<= 0 (+ main_~y~0 4))) (.cse62 (<= main_~y~0 7)) (.cse21 (<= main_~x~0 2)) (.cse22 (<= 0 main_~x~0)) (.cse37 (<= main_~N~0 (+ main_~i~0 1))) (.cse54 (<= 0 (+ main_~x~0 7))) (.cse10 (and .cse66 .cse1 .cse3 .cse24 .cse6))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (and .cse1 .cse3 .cse7 .cse8 .cse4 .cse6 .cse9) (and .cse10 .cse11 .cse12 .cse4) (and .cse13 .cse14 .cse15 .cse16 .cse4 .cse9) (and .cse17 .cse4 .cse18 .cse19) (and .cse20 .cse1 .cse3 .cse12 .cse21 .cse6 .cse22) (and .cse14 .cse1 .cse23 .cse3 .cse24 .cse6 .cse22) (and .cse1 .cse23 .cse3 .cse12 .cse25 .cse6 .cse22) (and .cse1 .cse26 .cse3 .cse27 .cse21 .cse6 .cse22) (and .cse1 .cse28 .cse3 .cse4 .cse5 .cse6 .cse29) (and .cse30 .cse31 .cse1 .cse3 .cse4 .cse6 .cse9) (and .cse32 .cse12 .cse33 .cse4 .cse9) (and .cse1 .cse23 .cse34 .cse3 .cse6 .cse22 .cse29) (and .cse31 .cse28 .cse4 .cse10) (and .cse31 .cse35 .cse16 .cse33 .cse4 .cse9) (and .cse13 .cse16 .cse2 .cse36 .cse4 .cse9) (and .cse16 .cse28 .cse37 .cse33 .cse4 .cse9) (and .cse1 .cse12 .cse38 .cse36 .cse6 .cse22 .cse9) (and .cse39 .cse11 .cse12 .cse9) (and .cse11 .cse16 .cse33 .cse4 .cse9 .cse29) (and (and .cse11 .cse16 .cse3 .cse27) .cse4 .cse29) (and .cse1 .cse40 .cse3 .cse37 .cse4 .cse6 .cse22) (and .cse1 .cse3 .cse18 .cse4 (<= 0 (+ main_~x~0 10)) .cse6 .cse9) (and (or (and .cse1 .cse23 .cse2 .cse6 .cse22 .cse9) (and .cse2 .cse41)) .cse33) (and .cse3 .cse12 .cse4 (and .cse20 .cse42)) (and .cse32 .cse3 .cse27 .cse12 .cse4) (and .cse43 .cse1 .cse3 .cse37 .cse6 .cse22 .cse9) (and .cse31 .cse39 .cse28 .cse9) (and .cse44 .cse35 .cse16 .cse37 .cse4 .cse9) (and .cse1 .cse45 .cse3 .cse7 .cse4 .cse5 .cse6) (and .cse1 .cse46 .cse3 .cse12 .cse6 .cse22 .cse9) (and .cse1 .cse23 .cse3 .cse37 .cse6 .cse22 .cse19) (and .cse1 .cse3 .cse47 .cse24 .cse18 .cse6 .cse22) (and .cse37 .cse4 (and .cse25 .cse48)) (and .cse14 .cse49 .cse1 .cse3 .cse6 .cse22 .cse9) (and .cse50 .cse51 .cse29) (and .cse20 .cse1 .cse3 .cse37 .cse6 .cse22 .cse52) (and .cse32 .cse44 .cse4 .cse9 .cse29) (and .cse44 .cse1 .cse2 .cse4 .cse6 .cse22 .cse9) (and .cse31 .cse53 .cse41) (and .cse1 .cse23 .cse3 .cse45 .cse5 .cse6 .cse22) (and .cse16 .cse33 .cse4 .cse18 .cse54 .cse9) (and .cse1 .cse3 .cse8 .cse4 .cse5 .cse6 .cse22) (and .cse1 .cse12 .cse55 .cse4 .cse6 .cse22 .cse9) (and .cse1 .cse50 .cse38 .cse37 .cse6 .cse22 .cse9) (and .cse15 .cse49 .cse1 .cse2 .cse6 .cse22 .cse9) (and .cse14 .cse1 .cse3 .cse21 .cse5 .cse6 .cse22) (and .cse1 .cse3 .cse25 .cse18 .cse6 .cse22 .cse52) (and .cse31 .cse32 .cse3 .cse25 .cse4) (and .cse1 .cse3 .cse25 .cse38 .cse37 .cse6 .cse22) (and .cse1 .cse38 .cse33 .cse6 .cse22 .cse9 .cse29) (and .cse20 .cse31 .cse1 .cse3 .cse38 .cse6 .cse22) (and .cse49 .cse1 .cse53 .cse18 .cse6 .cse22 .cse9) (and .cse1 .cse3 .cse56 .cse24 .cse37 .cse6 .cse22) (and .cse1 .cse26 .cse11 .cse3 .cse4 .cse5 .cse6) (and .cse1 .cse3 .cse47 .cse37 .cse5 .cse6 .cse22) (and .cse1 .cse3 .cse37 .cse4 .cse6 .cse57 .cse9) (and .cse30 .cse37 .cse4 .cse58 .cse9) (and .cse1 .cse47 .cse36 .cse18 .cse6 .cse22 .cse9) (and (or (and .cse14 .cse1 .cse23 .cse6 .cse22 .cse9) (and .cse14 .cse41)) .cse36) (and .cse31 .cse1 .cse3 .cse27 .cse6 .cse22 .cse52) (and .cse35 .cse10 .cse4 .cse29) (and .cse1 .cse53 .cse21 .cse37 .cse6 .cse22 .cse9) (and .cse1 (<= main_~x~0 10) .cse3 .cse18 .cse6 .cse22 .cse9) (and .cse31 .cse44 .cse1 .cse38 .cse6 .cse22 .cse9) (and .cse15 .cse1 .cse46 .cse6 .cse22 .cse9 .cse29) (and .cse1 .cse40 .cse7 .cse4 .cse18 .cse6 .cse59) (and .cse1 .cse56 .cse37 .cse36 .cse6 .cse22 .cse9) (and .cse44 .cse12 .cse51) (and .cse1 .cse3 .cse12 .cse38 .cse24 .cse6 .cse22) (and .cse1 .cse38 .cse55 .cse18 .cse6 .cse22 .cse9) (and .cse43 .cse15 .cse1 .cse18 .cse6 .cse22 .cse9) (and .cse31 .cse60 .cse35) (and .cse1 .cse2 .cse27 .cse3 .cse7 .cse4 .cse6) (and .cse49 .cse1 .cse12 .cse33 .cse6 .cse22 .cse9) (and .cse1 .cse36 .cse6 .cse22 .cse9 .cse52 .cse29) (and .cse31 .cse1 .cse34 .cse3 .cse21 .cse6 .cse22) (and .cse14 .cse15 .cse1 .cse21 .cse6 .cse22 .cse9) (and .cse1 .cse12 .cse3 .cse25 .cse7 .cse4 .cse6) (and .cse1 .cse26 .cse3 .cse25 .cse4 .cse6 .cse22) (and .cse49 .cse1 .cse2 .cse3 .cse5 .cse6 .cse22) (and .cse15 .cse1 .cse8 .cse4 .cse6 .cse22 .cse9) (and .cse1 .cse50 .cse23 .cse12 .cse6 .cse22 .cse9) (and .cse61 .cse3 .cse25 .cse18) (and .cse13 .cse14 .cse1 .cse3 .cse4 .cse5 .cse6) (and .cse1 .cse21 .cse18 .cse6 .cse22 .cse19 .cse59) (and .cse31 .cse15 .cse1 .cse56 .cse6 .cse22 .cse9) (and .cse49 .cse1 .cse26 .cse36 .cse6 .cse22 .cse9) (and .cse20 .cse1 .cse26 .cse3 .cse7 .cse4 .cse6) (and .cse1 .cse4 .cse18 .cse6 .cse22 .cse59) (and .cse1 .cse46 .cse3 .cse27 .cse37 .cse6 .cse22) (and .cse44 .cse1 .cse26 .cse23 .cse6 .cse22 .cse9) (and .cse1 .cse50 .cse26 .cse4 .cse6 .cse22 .cse9) (and .cse0 .cse14 .cse1 .cse3 .cse4 .cse6 .cse9) (and .cse15 .cse1 .cse47 .cse37 .cse6 .cse22 .cse9) (and .cse1 .cse35 .cse26 .cse3 .cse4 .cse6 .cse9) (and .cse30 .cse39 .cse18 .cse9) (and .cse15 .cse1 .cse26 .cse38 .cse6 .cse22 .cse9) (and .cse1 .cse2 .cse3 .cse24 .cse21 .cse6 .cse22) (and .cse42 .cse3 .cse25 .cse4 .cse29) (and .cse28 .cse58 .cse4 .cse9 .cse29) (and .cse14 .cse1 .cse3 .cse27 .cse4 .cse6 .cse22) (and .cse1 .cse45 .cse36 .cse4 .cse6 .cse22 .cse9) (and .cse1 .cse3 .cse27 .cse38 .cse6 .cse22 .cse29) (and .cse44 .cse49 .cse1 .cse6 .cse22 .cse9 .cse29) (and .cse1 .cse11 .cse2 .cse3 .cse4 .cse6 .cse9) (and .cse44 .cse1 .cse46 .cse18 .cse6 .cse22 .cse9) (and .cse32 .cse37 .cse55 .cse4 .cse9) (and .cse1 .cse46 .cse3 .cse5 .cse6 .cse22 .cse29) (and .cse31 .cse1 .cse23 .cse3 .cse62 .cse6 .cse22) (and .cse4 .cse18 (and .cse34 .cse48)) (and .cse1 .cse34 .cse3 .cse7 .cse4 .cse6 .cse29) (and .cse1 .cse23 .cse3 .cse8 .cse6 .cse22 .cse9) (and .cse31 .cse1 (<= 0 (+ main_~y~0 8)) .cse4 .cse6 .cse22 .cse9) (and .cse0 .cse26 .cse16 .cse36 .cse4 .cse9) (and .cse1 .cse3 .cse12 .cse5 .cse6 .cse22 .cse52) (and .cse31 .cse1 .cse3 .cse62 .cse7 .cse4 .cse6) (and .cse31 .cse1 .cse46 .cse3 .cse24 .cse6 .cse22) (and .cse1 .cse53 .cse4 .cse6 .cse22 .cse9 .cse29) (and .cse13 .cse31 .cse34 (and .cse1 .cse4 .cse6) .cse3) (and .cse50 .cse37 .cse63 .cse4 .cse9) (and .cse1 .cse3 .cse7 .cse37 .cse4 .cse6 .cse19) (and .cse30 .cse4 .cse18 .cse10) (and .cse53 .cse51 .cse37) (and .cse1 .cse26 .cse3 .cse6 .cse22 .cse9 .cse52) (and .cse55 .cse63 .cse4 .cse18 .cse9) (and .cse1 .cse35 .cse3 .cse12 .cse4 .cse5 .cse6) (and .cse31 .cse1 .cse3 .cse54 .cse4 .cse5 .cse6) (and .cse1 .cse23 .cse40 .cse18 .cse6 .cse22 .cse59) (and .cse60 .cse28 .cse37) (and .cse32 .cse31 .cse50 .cse4 .cse9) (and .cse31 .cse1 .cse3 .cse56 .cse5 .cse6 .cse22) (and .cse31 .cse49 .cse1 .cse50 .cse6 .cse22 .cse9) (and .cse31 .cse1 .cse33 .cse6 .cse22 .cse9 .cse52) (and .cse44 .cse1 .cse12 .cse21 .cse6 .cse22 .cse9) (and .cse26 .cse3 .cse27 .cse4 .cse42) (and .cse31 .cse1 .cse3 .cse47 .cse6 .cse22 .cse9) (and .cse1 .cse50 .cse21 .cse6 .cse22 .cse9 .cse29) (and .cse15 .cse1 .cse12 .cse6 .cse22 .cse9 .cse52) (and .cse1 .cse3 .cse24 .cse6 .cse22 .cse52 .cse29) (and .cse1 .cse3 .cse25 .cse21 .cse6 .cse22 .cse29) (and .cse49 .cse1 .cse34 .cse3 .cse37 .cse6 .cse22) (and .cse44 .cse26 .cse41) (and .cse1 .cse28 .cse12 .cse3 .cse4 .cse6 .cse9) (and .cse58 .cse4 .cse18 .cse57 .cse9) (and .cse15 .cse1 .cse23 .cse45 .cse6 .cse22 .cse9) (and (or (and .cse1 .cse23 .cse37 .cse6 .cse22 .cse9) (and .cse37 .cse41)) (<= 0 (+ main_~y~0 9))) (and .cse1 .cse23 .cse2 .cse3 .cse27 .cse6 .cse22) (and .cse26 .cse11 .cse58 .cse4 .cse9) (and .cse32 .cse53 .cse4 .cse18 .cse9) (and .cse13 .cse1 .cse45 .cse3 .cse4 .cse6 .cse9) (and .cse50 .cse61 .cse18 .cse9) (and .cse1 .cse3 .cse56 .cse6 .cse22 .cse9 .cse29) (and .cse0 .cse26 .cse10 .cse4) (and .cse1 .cse26 .cse3 .cse38 .cse5 .cse6 .cse22) (and .cse62 .cse64 .cse4 .cse18) (and .cse44 .cse16 .cse28 .cse4 .cse18 .cse9) (and .cse1 .cse2 .cse21 .cse36 .cse6 .cse22 .cse9) (and .cse31 .cse1 .cse21 .cse55 .cse6 .cse22 .cse9) (and .cse31 .cse49 .cse1 .cse3 .cse25 .cse6 .cse22) (and .cse20 .cse49 .cse1 .cse3 .cse6 .cse22 .cse29) (and .cse43 .cse1 .cse3 .cse5 .cse18 .cse6 .cse22) (and .cse31 .cse58 .cse4 .cse54 .cse9) (and .cse17 .cse62 .cse37 .cse4) (and .cse1 .cse3 .cse4 .cse6 .cse22 .cse9) (and .cse51 .cse18) (and .cse49 .cse1 .cse26 .cse3 .cse24 .cse6 .cse22) (and .cse1 .cse34 .cse3 .cse12 .cse4 .cse6 .cse22) (and .cse60 .cse18 .cse54) (and .cse49 .cse1 .cse3 .cse27 .cse12 .cse6 .cse22) (and .cse1 .cse3 .cse56 .cse27 .cse18 .cse6 .cse22) (and .cse39 .cse37 .cse54 .cse9) (and .cse44 .cse1 .cse37 .cse6 .cse22 .cse9 .cse52) (and .cse39 .cse35 .cse9 .cse29) (and .cse35 .cse3 .cse65 .cse37) (and .cse50 .cse12 .cse41) (and .cse31 .cse51 .cse55) (and .cse49 .cse1 .cse3 .cse62 .cse18 .cse6 .cse22) (and .cse1 .cse3 .cse4 .cse5 .cse18 .cse6 .cse57) (and .cse1 .cse26 .cse21 .cse33 .cse6 .cse22 .cse9) (and .cse14 .cse1 .cse3 .cse24 .cse7 .cse4 .cse6) (and .cse1 .cse46 .cse37 .cse33 .cse6 .cse22 .cse9) (and .cse2 .cse3 .cse24 (and .cse13 .cse1 .cse4 .cse6)) (and .cse49 .cse1 .cse37 .cse55 .cse6 .cse22 .cse9) (and .cse31 .cse3 .cse4 (and .cse20 .cse63)) (and .cse1 .cse3 .cse45 .cse24 .cse4 .cse6 .cse22) (and .cse1 .cse34 .cse3 .cse38 .cse18 .cse6 .cse22) (and .cse1 .cse56 .cse33 .cse18 .cse6 .cse22 .cse9) (and .cse1 .cse50 .cse18 .cse6 .cse22 .cse9 .cse52) (and .cse28 (and .cse3 .cse65) .cse18) (and .cse20 .cse1 .cse2 .cse3 .cse4 .cse6 .cse22) (and .cse0 .cse3 (and .cse20 .cse1 .cse4 .cse6) .cse29) (and .cse14 .cse1 .cse33 .cse4 .cse6 .cse22 .cse9) (and .cse1 .cse3 .cse4 .cse54 .cse6 .cse9 .cse29) (and .cse0 .cse2 .cse58 .cse4 .cse9) (and .cse31 .cse1 .cse3 .cse4 .cse6 .cse22 .cse19) (and .cse31 .cse1 .cse46 .cse36 .cse6 .cse22 .cse9) (and .cse15 .cse45 (and .cse1 .cse6) .cse7 .cse4 .cse9) (and .cse64 .cse34 .cse37 .cse4) (and .cse20 .cse1 .cse26 .cse23 .cse3 .cse6 .cse22) (and (or (and .cse1 .cse23 .cse6 .cse22 .cse9 .cse29) (and .cse41 .cse29)) .cse55) (and .cse31 .cse1 .cse53 .cse23 .cse6 .cse22 .cse9) (and .cse1 .cse3 .cse45 .cse21 .cse6 .cse22 .cse9) (and .cse26 .cse51 .cse33) (and .cse1 .cse3 .cse62 .cse4 .cse6 .cse22 .cse29) (and .cse1 .cse2 .cse3 .cse38 .cse6 .cse22 .cse9) (and .cse30 .cse1 .cse3 .cse37 .cse4 .cse5 .cse6) (and .cse35 .cse12 .cse58 .cse4 .cse9) (and .cse20 .cse1 .cse46 .cse3 .cse18 .cse6 .cse22) (and .cse31 .cse44 .cse63 .cse4 .cse9) (and .cse1 .cse3 .cse62 .cse21 .cse37 .cse6 .cse22) (and .cse37 .cse4 .cse54 .cse10)))))) [2018-11-23 00:29:58,216 INFO L448 ceAbstractionStarter]: For program point mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2018-11-23 00:29:58,216 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-23 00:29:58,216 INFO L448 ceAbstractionStarter]: For program point mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 30) no Hoare annotation was computed. [2018-11-23 00:29:58,216 INFO L448 ceAbstractionStarter]: For program point mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2018-11-23 00:29:58,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 12:29:58 BoogieIcfgContainer [2018-11-23 00:29:58,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 00:29:58,265 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 00:29:58,265 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 00:29:58,268 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 00:29:58,269 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:27:50" (3/4) ... [2018-11-23 00:29:58,273 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 00:29:58,279 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 00:29:58,281 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 00:29:58,285 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-23 00:29:58,285 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 00:29:58,286 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 00:29:58,286 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 00:29:58,337 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c98f7bcc-6266-4ba7-b1c4-b46c45cc57e1/bin-2019/utaipan/witness.graphml [2018-11-23 00:29:58,337 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 00:29:58,338 INFO L168 Benchmark]: Toolchain (without parser) took 128051.71 ms. Allocated memory was 1.0 GB in the beginning and 4.0 GB in the end (delta: 3.0 GB). Free memory was 963.0 MB in the beginning and 3.2 GB in the end (delta: -2.3 GB). Peak memory consumption was 738.8 MB. Max. memory is 11.5 GB. [2018-11-23 00:29:58,338 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 00:29:58,339 INFO L168 Benchmark]: CACSL2BoogieTranslator took 162.58 ms. Allocated memory is still 1.0 GB. Free memory was 963.0 MB in the beginning and 952.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 00:29:58,339 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.97 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 946.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-23 00:29:58,339 INFO L168 Benchmark]: Boogie Preprocessor took 13.04 ms. Allocated memory is still 1.0 GB. Free memory is still 946.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 00:29:58,339 INFO L168 Benchmark]: RCFGBuilder took 175.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -174.8 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-23 00:29:58,340 INFO L168 Benchmark]: TraceAbstraction took 127613.01 ms. Allocated memory was 1.2 GB in the beginning and 4.0 GB in the end (delta: 2.9 GB). Free memory was 1.1 GB in the beginning and 3.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 4.5 GB. Max. memory is 11.5 GB. [2018-11-23 00:29:58,340 INFO L168 Benchmark]: Witness Printer took 72.55 ms. Allocated memory is still 4.0 GB. Free memory is still 3.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 00:29:58,341 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 162.58 ms. Allocated memory is still 1.0 GB. Free memory was 963.0 MB in the beginning and 952.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.97 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 946.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.04 ms. Allocated memory is still 1.0 GB. Free memory is still 946.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 175.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -174.8 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 127613.01 ms. Allocated memory was 1.2 GB in the beginning and 4.0 GB in the end (delta: 2.9 GB). Free memory was 1.1 GB in the beginning and 3.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 4.5 GB. Max. memory is 11.5 GB. * Witness Printer took 72.55 ms. Allocated memory is still 4.0 GB. Free memory is still 3.2 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: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 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: 30]: 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: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0 <= x + 3 && 0 <= i) && N <= i + 6) && 0 <= y) && x <= 0) && y <= 1) && N <= 10) || ((((((0 <= i && 0 <= y) && 0 <= x + 1) && N <= i + 9) && x <= 0) && N <= 10) && y <= 0)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && y <= 2) && N <= 10) && 0 <= x + 4) && N <= i + 4) && x <= 0)) || (((((0 <= x + 2 && N <= i + 7) && 0 <= y + 1) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && y <= 0)) || (((((0 <= x + 2 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y) && x <= 0) && N <= i) && y <= 8)) || ((((((y <= 4 && 0 <= i) && 0 <= y) && N <= i + 4) && x <= 2) && N <= 10) && 0 <= x)) || ((((((N <= i + 7 && 0 <= i) && x <= 1) && 0 <= y) && y <= 2) && N <= 10) && 0 <= x)) || ((((((0 <= i && x <= 1) && 0 <= y) && N <= i + 4) && y <= 5) && N <= 10) && 0 <= x)) || ((((((0 <= i && N <= i + 5) && 0 <= y) && y <= 3) && x <= 2) && N <= 10) && 0 <= x)) || ((((((0 <= i && 0 <= x + 6) && 0 <= y) && x <= 0) && y <= 1) && N <= 10) && N <= i + 3)) || ((((((0 <= x + 8 && N <= i + 2) && 0 <= i) && 0 <= y) && x <= 0) && N <= 10) && y <= 0)) || (((((0 <= x + 3 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && N <= i + 4) && 0 <= y + 3) && x <= 0) && y <= 0)) || ((((((0 <= i && x <= 1) && y <= 6) && 0 <= y) && N <= 10) && 0 <= x) && N <= i + 3)) || (((N <= i + 2 && 0 <= x + 6) && x <= 0) && (((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && y <= 2) && N <= 10)) || (((((N <= i + 2 && 0 <= x + 5) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 3) && x <= 0) && y <= 0)) || (((((0 <= x + 2 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && N <= i + 6) && 0 <= y + 2) && x <= 0) && y <= 0)) || ((((((((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= x + 6) && N <= i + 1) && 0 <= y + 3) && x <= 0) && y <= 0)) || ((((((0 <= i && N <= i + 4) && x <= 4) && 0 <= y + 2) && N <= 10) && 0 <= x) && y <= 0)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y + 2) && x <= 0) && N <= 10) && 0 <= x + 4) && N <= i + 4) && y <= 0)) || (((((0 <= x + 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 3) && x <= 0) && y <= 0) && N <= i + 3)) || (((((0 <= x + 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y) && y <= 3) && x <= 0) && N <= i + 3)) || ((((((0 <= i && y <= 9) && 0 <= y) && N <= i + 1) && x <= 0) && N <= 10) && 0 <= x)) || ((((((0 <= i && 0 <= y) && N <= i) && x <= 0) && 0 <= x + 10) && N <= 10) && y <= 0)) || (((((((0 <= i && x <= 1) && N <= i + 6) && N <= 10) && 0 <= x) && y <= 0) || (N <= i + 6 && ((((0 <= i && 0 <= x + 1) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && y <= 0)) && 0 <= y + 3)) || (((0 <= y && N <= i + 4) && x <= 0) && y <= 4 && 0 <= x + 2 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648)) || (((((0 <= x + 3 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y) && y <= 3) && N <= i + 4) && x <= 0)) || ((((((x <= 9 && 0 <= i) && 0 <= y) && N <= i + 1) && N <= 10) && 0 <= x) && y <= 0)) || (((N <= i + 2 && (((0 <= x + 2147483648 && 0 <= i) && 0 <= y + 2) && x <= 0) && N <= 10) && 0 <= x + 6) && y <= 0)) || (((((0 <= y + 4 && 0 <= x + 5) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && N <= i + 1) && x <= 0) && y <= 0)) || ((((((0 <= i && N <= i + 8) && 0 <= y) && 0 <= x + 1) && x <= 0) && y <= 1) && N <= 10)) || ((((((0 <= i && x <= 6) && 0 <= y) && N <= i + 4) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && x <= 1) && 0 <= y) && N <= i + 1) && N <= 10) && 0 <= x) && y <= 8)) || ((((((0 <= i && 0 <= y) && x <= 8) && y <= 2) && N <= i) && N <= 10) && 0 <= x)) || ((N <= i + 1 && x <= 0) && y <= 5 && 0 <= y && 0 <= x + 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648)) || ((((((N <= i + 7 && x <= 3) && 0 <= i) && 0 <= y) && N <= 10) && 0 <= x) && y <= 0)) || ((0 <= y + 5 && ((((0 <= x + 2 && 0 <= i) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && y <= 0) && N <= i + 3)) || ((((((y <= 4 && 0 <= i) && 0 <= y) && N <= i + 1) && N <= 10) && 0 <= x) && x <= 5)) || (((((0 <= x + 3 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 4) && x <= 0) && y <= 0) && N <= i + 3)) || ((((((0 <= y + 4 && 0 <= i) && N <= i + 6) && x <= 0) && N <= 10) && 0 <= x) && y <= 0)) || ((N <= i + 2 && 0 <= y + 7) && ((((0 <= i && 0 <= x + 1) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && y <= 0)) || ((((((0 <= i && x <= 1) && 0 <= y) && N <= i + 8) && y <= 1) && N <= 10) && 0 <= x)) || ((((((((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 3) && x <= 0) && N <= i) && 0 <= x + 7) && y <= 0)) || ((((((0 <= i && 0 <= y) && N <= i + 9) && x <= 0) && y <= 1) && N <= 10) && 0 <= x)) || ((((((0 <= i && N <= i + 4) && 0 <= y + 6) && x <= 0) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && 0 <= y + 5) && x <= 4) && N <= i + 1) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= y + 1 && x <= 3) && 0 <= i) && N <= i + 6) && N <= 10) && 0 <= x) && y <= 0)) || ((((((N <= i + 7 && 0 <= i) && 0 <= y) && x <= 2) && y <= 1) && N <= 10) && 0 <= x)) || ((((((0 <= i && 0 <= y) && y <= 5) && N <= i) && N <= 10) && 0 <= x) && x <= 5)) || ((((N <= i + 2 && 0 <= x + 3 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y) && y <= 5) && x <= 0)) || ((((((0 <= i && 0 <= y) && y <= 5) && x <= 4) && N <= i + 1) && N <= 10) && 0 <= x)) || ((((((0 <= i && x <= 4) && 0 <= y + 3) && N <= 10) && 0 <= x) && y <= 0) && N <= i + 3)) || ((((((y <= 4 && N <= i + 2) && 0 <= i) && 0 <= y) && x <= 4) && N <= 10) && 0 <= x)) || ((((((x <= 3 && 0 <= i) && 0 <= y + 7) && N <= i) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && 0 <= y) && x <= 7) && y <= 2) && N <= i + 1) && N <= 10) && 0 <= x)) || ((((((0 <= i && N <= i + 5) && 0 <= x + 4) && 0 <= y) && x <= 0) && y <= 1) && N <= 10)) || ((((((0 <= i && 0 <= y) && x <= 8) && N <= i + 1) && y <= 1) && N <= 10) && 0 <= x)) || ((((((0 <= i && 0 <= y) && N <= i + 1) && x <= 0) && N <= 10) && 0 <= x + 9) && y <= 0)) || ((((0 <= x + 8 && N <= i + 1) && x <= 0) && ((0 <= x + 2147483648 && 0 <= y + 1) && 0 <= i) && N <= 10) && y <= 0)) || ((((((0 <= i && x <= 8) && 0 <= y + 2) && N <= i) && N <= 10) && 0 <= x) && y <= 0)) || (((((((N <= i + 7 && 0 <= i) && x <= 1) && N <= 10) && 0 <= x) && y <= 0) || (N <= i + 7 && ((((0 <= i && 0 <= x + 1) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && y <= 0)) && 0 <= y + 2)) || ((((((N <= i + 2 && 0 <= i) && 0 <= y) && y <= 3) && N <= 10) && 0 <= x) && x <= 5)) || (((0 <= x + 5 && (((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && y <= 2) && N <= 10) && x <= 0) && N <= i + 3)) || ((((((0 <= i && 0 <= y + 7) && x <= 2) && N <= i + 1) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && x <= 10) && 0 <= y) && N <= i) && N <= 10) && 0 <= x) && y <= 0)) || ((((((N <= i + 2 && 0 <= y + 4) && 0 <= i) && x <= 4) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= y + 1 && 0 <= i) && x <= 6) && N <= 10) && 0 <= x) && y <= 0) && N <= i + 3)) || ((((((0 <= i && y <= 9) && 0 <= x + 1) && x <= 0) && N <= i) && N <= 10) && 0 <= y + 2147483648)) || ((((((0 <= i && x <= 7) && N <= i + 1) && 0 <= y + 2) && N <= 10) && 0 <= x) && y <= 0)) || ((0 <= y + 4 && N <= i + 4) && ((((0 <= x + 2 && 0 <= i) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && y <= 0)) || ((((((0 <= i && 0 <= y) && N <= i + 4) && x <= 4) && y <= 2) && N <= 10) && 0 <= x)) || ((((((0 <= i && x <= 4) && 0 <= y + 6) && N <= i) && N <= 10) && 0 <= x) && y <= 0)) || ((((((x <= 9 && 0 <= y + 1) && 0 <= i) && N <= i) && N <= 10) && 0 <= x) && y <= 0)) || ((N <= i + 2 && (((((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y) && y <= 3) && x <= 0) && 0 <= x + 5)) || ((((((0 <= i && N <= i + 6) && y <= 3) && 0 <= y) && 0 <= x + 1) && x <= 0) && N <= 10)) || ((((((x <= 3 && 0 <= i) && N <= i + 4) && 0 <= y + 3) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && 0 <= y + 2) && N <= 10) && 0 <= x) && y <= 0) && x <= 5) && N <= i + 3)) || ((((((N <= i + 2 && 0 <= i) && y <= 6) && 0 <= y) && x <= 2) && N <= 10) && 0 <= x)) || ((((((N <= i + 7 && 0 <= y + 1) && 0 <= i) && x <= 2) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && N <= i + 4) && 0 <= y) && y <= 5) && 0 <= x + 1) && x <= 0) && N <= 10)) || ((((((0 <= i && N <= i + 5) && 0 <= y) && y <= 5) && x <= 0) && N <= 10) && 0 <= x)) || ((((((x <= 3 && 0 <= i) && N <= i + 6) && 0 <= y) && y <= 1) && N <= 10) && 0 <= x)) || ((((((0 <= y + 1 && 0 <= i) && N <= i + 9) && x <= 0) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && 0 <= y + 5) && x <= 1) && N <= i + 4) && N <= 10) && 0 <= x) && y <= 0)) || (((((((0 <= i && 0 <= x + 5) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && 0 <= y) && y <= 5) && N <= i)) || ((((((0 <= x + 2 && N <= i + 7) && 0 <= i) && 0 <= y) && x <= 0) && y <= 1) && N <= 10)) || ((((((0 <= i && x <= 2) && N <= i) && N <= 10) && 0 <= x) && y <= 8) && 0 <= y + 2147483648)) || ((((((N <= i + 2 && 0 <= y + 1) && 0 <= i) && x <= 7) && N <= 10) && 0 <= x) && y <= 0)) || ((((((x <= 3 && 0 <= i) && N <= i + 5) && 0 <= y + 2) && N <= 10) && 0 <= x) && y <= 0)) || ((((((y <= 4 && 0 <= i) && N <= i + 5) && 0 <= y) && 0 <= x + 1) && x <= 0) && N <= 10)) || (((((0 <= i && x <= 0) && N <= i) && N <= 10) && 0 <= x) && 0 <= y + 2147483648)) || ((((((0 <= i && x <= 6) && 0 <= y) && y <= 3) && N <= i + 1) && N <= 10) && 0 <= x)) || ((((((0 <= y + 4 && 0 <= i) && N <= i + 5) && x <= 1) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && 0 <= y + 5) && N <= i + 5) && x <= 0) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= x + 3 && N <= i + 7) && 0 <= i) && 0 <= y) && x <= 0) && N <= 10) && y <= 0)) || ((((((0 <= y + 1 && 0 <= i) && x <= 8) && N <= i + 1) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && 0 <= x + 5) && N <= i + 5) && 0 <= y) && x <= 0) && N <= 10) && y <= 0)) || (((0 <= x + 8 && (((0 <= x + 2147483648 && 0 <= i) && 0 <= y + 2) && x <= 0) && N <= 10) && N <= i) && y <= 0)) || ((((((0 <= y + 1 && 0 <= i) && N <= i + 5) && x <= 4) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && N <= i + 6) && 0 <= y) && y <= 2) && x <= 2) && N <= 10) && 0 <= x)) || (((((0 <= x + 2 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y) && y <= 5) && x <= 0) && N <= i + 3)) || ((((0 <= x + 6 && ((0 <= x + 2147483648 && 0 <= y + 1) && 0 <= i) && N <= 10) && x <= 0) && y <= 0) && N <= i + 3)) || ((((((N <= i + 7 && 0 <= i) && 0 <= y) && y <= 3) && x <= 0) && N <= 10) && 0 <= x)) || ((((((0 <= i && N <= i + 8) && 0 <= y + 2) && x <= 0) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && 0 <= y) && y <= 3) && x <= 4) && N <= 10) && 0 <= x) && N <= i + 3)) || ((((((0 <= y + 4 && x <= 3) && 0 <= i) && N <= 10) && 0 <= x) && y <= 0) && N <= i + 3)) || ((((((0 <= i && 0 <= x + 4) && N <= i + 6) && 0 <= y) && x <= 0) && N <= 10) && y <= 0)) || ((((((0 <= y + 4 && 0 <= i) && x <= 6) && N <= i) && N <= 10) && 0 <= x) && y <= 0)) || (((((0 <= x + 3 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && N <= i + 1) && 0 <= y + 6) && x <= 0) && y <= 0)) || ((((((0 <= i && x <= 6) && 0 <= y) && y <= 1) && N <= 10) && 0 <= x) && N <= i + 3)) || ((((((N <= i + 2 && 0 <= i) && x <= 1) && 0 <= y) && y <= 7) && N <= 10) && 0 <= x)) || ((x <= 0 && N <= i) && y <= 6 && 0 <= y && 0 <= x + 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648)) || ((((((0 <= i && y <= 6) && 0 <= y) && 0 <= x + 1) && x <= 0) && N <= 10) && N <= i + 3)) || ((((((0 <= i && x <= 1) && 0 <= y) && N <= i + 9) && N <= 10) && 0 <= x) && y <= 0)) || ((((((N <= i + 2 && 0 <= i) && 0 <= y + 8) && x <= 0) && N <= 10) && 0 <= x) && y <= 0)) || (((((0 <= x + 3 && N <= i + 5) && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 2) && x <= 0) && y <= 0)) || ((((((0 <= i && 0 <= y) && N <= i + 4) && y <= 1) && N <= 10) && 0 <= x) && x <= 5)) || ((((((N <= i + 2 && 0 <= i) && 0 <= y) && y <= 7) && 0 <= x + 1) && x <= 0) && N <= 10)) || ((((((N <= i + 2 && 0 <= i) && x <= 6) && 0 <= y) && y <= 2) && N <= 10) && 0 <= x)) || ((((((0 <= i && 0 <= y + 7) && x <= 0) && N <= 10) && 0 <= x) && y <= 0) && N <= i + 3)) || ((((0 <= x + 2 && N <= i + 2) && y <= 6) && (0 <= i && x <= 0) && N <= 10) && 0 <= y)) || ((((0 <= y + 5 && N <= i + 1) && 0 <= x + 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && y <= 0)) || ((((((0 <= i && 0 <= y) && 0 <= x + 1) && N <= i + 1) && x <= 0) && N <= 10) && y <= 8)) || (((0 <= x + 8 && x <= 0) && N <= i) && (((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && y <= 2) && N <= 10)) || ((0 <= y + 7 && ((((0 <= x + 2 && 0 <= i) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && y <= 0) && N <= i + 1)) || ((((((0 <= i && N <= i + 5) && 0 <= y) && N <= 10) && 0 <= x) && y <= 0) && x <= 5)) || ((((0 <= y + 6 && 0 <= x + 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && N <= i) && y <= 0)) || ((((((0 <= i && 0 <= x + 5) && 0 <= y) && N <= i + 4) && x <= 0) && y <= 1) && N <= 10)) || ((((((N <= i + 2 && 0 <= i) && 0 <= y) && 0 <= x + 7) && x <= 0) && y <= 1) && N <= 10)) || ((((((0 <= i && x <= 1) && y <= 9) && N <= i) && N <= 10) && 0 <= x) && 0 <= y + 2147483648)) || ((((((((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y) && y <= 3) && x <= 0) && 0 <= x + 6) && N <= i + 1)) || (((((0 <= x + 3 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && N <= i + 2) && 0 <= y + 5) && x <= 0) && y <= 0)) || ((((((N <= i + 2 && 0 <= i) && 0 <= y) && x <= 7) && y <= 1) && N <= 10) && 0 <= x)) || ((((((N <= i + 2 && x <= 3) && 0 <= i) && 0 <= y + 5) && N <= 10) && 0 <= x) && y <= 0)) || ((((((N <= i + 2 && 0 <= i) && 0 <= y + 3) && N <= 10) && 0 <= x) && y <= 0) && x <= 5)) || ((((((0 <= y + 4 && 0 <= i) && N <= i + 4) && x <= 2) && N <= 10) && 0 <= x) && y <= 0)) || ((((N <= i + 5 && 0 <= y) && y <= 3) && x <= 0) && 0 <= x + 2 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648)) || ((((((N <= i + 2 && 0 <= i) && 0 <= y) && x <= 8) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && 0 <= y + 5) && x <= 2) && N <= 10) && 0 <= x) && y <= 0) && N <= i + 3)) || ((((((0 <= y + 1 && 0 <= i) && N <= i + 4) && N <= 10) && 0 <= x) && y <= 0) && x <= 5)) || ((((((0 <= i && 0 <= y) && y <= 2) && N <= 10) && 0 <= x) && x <= 5) && N <= i + 3)) || ((((((0 <= i && 0 <= y) && y <= 5) && x <= 2) && N <= 10) && 0 <= x) && N <= i + 3)) || ((((((x <= 3 && 0 <= i) && y <= 6) && 0 <= y) && N <= i + 1) && N <= 10) && 0 <= x)) || ((0 <= y + 4 && N <= i + 5) && ((((0 <= i && 0 <= x + 1) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && y <= 0)) || ((((((0 <= i && 0 <= x + 6) && N <= i + 4) && 0 <= y) && x <= 0) && N <= 10) && y <= 0)) || (((((((0 <= x + 2147483648 && 0 <= y + 1) && 0 <= i) && N <= 10) && x <= 0) && N <= i) && 0 <= x + 9) && y <= 0)) || ((((((0 <= y + 1 && 0 <= i) && x <= 1) && N <= i + 8) && N <= 10) && 0 <= x) && y <= 0)) || (((((((0 <= i && x <= 1) && N <= i + 1) && N <= 10) && 0 <= x) && y <= 0) || (N <= i + 1 && ((((0 <= i && 0 <= x + 1) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && y <= 0)) && 0 <= y + 9)) || ((((((0 <= i && x <= 1) && N <= i + 6) && 0 <= y) && y <= 3) && N <= 10) && 0 <= x)) || ((((N <= i + 5 && 0 <= x + 4) && ((0 <= x + 2147483648 && 0 <= y + 1) && 0 <= i) && N <= 10) && x <= 0) && y <= 0)) || (((((0 <= x + 3 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y + 7) && x <= 0) && N <= i) && y <= 0)) || ((((((0 <= x + 2 && 0 <= i) && N <= i + 8) && 0 <= y) && x <= 0) && N <= 10) && y <= 0)) || (((0 <= y + 5 && (((0 <= i && 0 <= x + 5) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && N <= i) && y <= 0)) || ((((((0 <= i && 0 <= y) && x <= 7) && N <= 10) && 0 <= x) && y <= 0) && N <= i + 3)) || (((0 <= x + 3 && N <= i + 5) && (((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && y <= 2) && N <= 10) && x <= 0)) || ((((((0 <= i && N <= i + 5) && 0 <= y) && x <= 4) && y <= 1) && N <= 10) && 0 <= x)) || (((y <= 7 && ((0 <= x + 3 && 0 <= i) && 0 <= y) && N <= 10) && x <= 0) && N <= i)) || (((((0 <= y + 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= x + 6) && x <= 0) && N <= i) && y <= 0)) || ((((((0 <= i && N <= i + 6) && x <= 2) && 0 <= y + 2) && N <= 10) && 0 <= x) && y <= 0)) || ((((((N <= i + 2 && 0 <= i) && x <= 2) && 0 <= y + 6) && N <= 10) && 0 <= x) && y <= 0)) || ((((((N <= i + 2 && x <= 3) && 0 <= i) && 0 <= y) && y <= 5) && N <= 10) && 0 <= x)) || ((((((y <= 4 && x <= 3) && 0 <= i) && 0 <= y) && N <= 10) && 0 <= x) && N <= i + 3)) || ((((((x <= 9 && 0 <= i) && 0 <= y) && y <= 1) && N <= i) && N <= 10) && 0 <= x)) || ((((N <= i + 2 && ((0 <= x + 2147483648 && 0 <= y + 1) && 0 <= i) && N <= 10) && x <= 0) && 0 <= x + 7) && y <= 0)) || (((((0 <= x + 2 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y) && y <= 7) && N <= i + 1) && x <= 0)) || (((((0 <= i && 0 <= y) && x <= 0) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= x + 2 && 0 <= i) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && y <= 0) && N <= i)) || ((((((x <= 3 && 0 <= i) && N <= i + 5) && 0 <= y) && y <= 2) && N <= 10) && 0 <= x)) || ((((((0 <= i && y <= 6) && 0 <= y) && N <= i + 4) && x <= 0) && N <= 10) && 0 <= x)) || ((((((((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && 0 <= y) && y <= 3) && x <= 0) && N <= i) && 0 <= x + 7)) || ((((((x <= 3 && 0 <= i) && 0 <= y) && y <= 3) && N <= i + 4) && N <= 10) && 0 <= x)) || ((((((0 <= i && 0 <= y) && x <= 7) && y <= 3) && N <= i) && N <= 10) && 0 <= x)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y + 2) && x <= 0) && N <= 10) && N <= i + 1) && 0 <= x + 7) && y <= 0)) || ((((((0 <= y + 4 && 0 <= i) && N <= i + 1) && N <= 10) && 0 <= x) && y <= 0) && x <= 5)) || (((((((0 <= x + 2147483648 && 0 <= i) && 0 <= y + 2) && x <= 0) && N <= 10) && 0 <= x + 5) && y <= 0) && N <= i + 3)) || (((0 <= x + 5 && 0 <= y) && (y <= 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && N <= i + 1)) || ((0 <= y + 5 && N <= i + 4) && ((((0 <= i && 0 <= x + 1) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && y <= 0)) || ((N <= i + 2 && ((((0 <= x + 2 && 0 <= i) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && y <= 0) && 0 <= y + 6)) || ((((((x <= 3 && 0 <= i) && 0 <= y) && y <= 7) && N <= i) && N <= 10) && 0 <= x)) || ((((((0 <= i && 0 <= y) && x <= 0) && y <= 1) && N <= i) && N <= 10) && 0 <= x + 9)) || ((((((0 <= i && N <= i + 5) && x <= 2) && 0 <= y + 3) && N <= 10) && 0 <= x) && y <= 0)) || ((((((N <= i + 7 && 0 <= i) && 0 <= y) && y <= 2) && 0 <= x + 1) && x <= 0) && N <= 10)) || ((((((0 <= i && x <= 6) && N <= i + 1) && 0 <= y + 3) && N <= 10) && 0 <= x) && y <= 0)) || (((N <= i + 6 && 0 <= y) && y <= 2) && ((0 <= x + 2 && 0 <= i) && x <= 0) && N <= 10)) || ((((((x <= 3 && 0 <= i) && N <= i + 1) && 0 <= y + 6) && N <= 10) && 0 <= x) && y <= 0)) || (((N <= i + 2 && 0 <= y) && x <= 0) && y <= 4 && 0 <= x + 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648)) || ((((((0 <= i && 0 <= y) && N <= i + 8) && y <= 2) && x <= 0) && N <= 10) && 0 <= x)) || ((((((0 <= i && y <= 6) && 0 <= y) && x <= 4) && N <= i) && N <= 10) && 0 <= x)) || ((((((0 <= i && x <= 7) && 0 <= y + 3) && N <= i) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && 0 <= y + 5) && N <= i) && N <= 10) && 0 <= x) && y <= 0) && x <= 5)) || ((0 <= x + 6 && 0 <= y && (y <= 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && N <= i)) || ((((((y <= 4 && 0 <= i) && N <= i + 6) && 0 <= y) && x <= 0) && N <= 10) && 0 <= x)) || (((0 <= x + 3 && 0 <= y) && ((y <= 4 && 0 <= i) && x <= 0) && N <= 10) && N <= i + 3)) || ((((((N <= i + 7 && 0 <= i) && 0 <= y + 3) && x <= 0) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && 0 <= y) && x <= 0) && 0 <= x + 7) && N <= 10) && y <= 0) && N <= i + 3)) || ((((0 <= x + 3 && N <= i + 6) && ((0 <= x + 2147483648 && 0 <= y + 1) && 0 <= i) && N <= 10) && x <= 0) && y <= 0)) || ((((((N <= i + 2 && 0 <= i) && 0 <= y) && x <= 0) && N <= 10) && 0 <= x) && y <= 8)) || ((((((N <= i + 2 && 0 <= i) && x <= 6) && 0 <= y + 2) && N <= 10) && 0 <= x) && y <= 0)) || (((((0 <= y + 1 && N <= i + 8) && 0 <= i && N <= 10) && 0 <= x + 1) && x <= 0) && y <= 0)) || ((((((0 <= x + 3 && 0 <= i) && 0 <= y) && N <= 10) && y <= 6) && N <= i + 1) && x <= 0)) || ((((((y <= 4 && 0 <= i) && N <= i + 5) && x <= 1) && 0 <= y) && N <= 10) && 0 <= x)) || (((((((0 <= i && x <= 1) && N <= 10) && 0 <= x) && y <= 0) && N <= i + 3) || ((((((0 <= i && 0 <= x + 1) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && y <= 0) && N <= i + 3)) && 0 <= y + 6)) || ((((((N <= i + 2 && 0 <= i) && 0 <= y + 7) && x <= 1) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= i && 0 <= y) && N <= i + 8) && x <= 2) && N <= 10) && 0 <= x) && y <= 0)) || ((N <= i + 5 && ((((0 <= x + 2 && 0 <= i) && x <= 0) && N <= 10) && 0 <= y + 2147483648) && y <= 0) && 0 <= y + 3)) || ((((((0 <= i && 0 <= y) && y <= 7) && x <= 0) && N <= 10) && 0 <= x) && N <= i + 3)) || ((((((0 <= i && N <= i + 6) && 0 <= y) && x <= 4) && N <= 10) && 0 <= x) && y <= 0)) || ((((((0 <= x + 8 && 0 <= i) && 0 <= y) && N <= i + 1) && x <= 0) && y <= 1) && N <= 10)) || ((((0 <= x + 5 && N <= i + 4) && ((0 <= x + 2147483648 && 0 <= y + 1) && 0 <= i) && N <= 10) && x <= 0) && y <= 0)) || ((((((y <= 4 && 0 <= i) && x <= 6) && 0 <= y) && N <= i) && N <= 10) && 0 <= x)) || ((((N <= i + 2 && 0 <= y + 4) && 0 <= x + 4 && ((0 <= x + 2147483648 && 0 <= i) && N <= 10) && 0 <= y + 2147483648) && x <= 0) && y <= 0)) || ((((((0 <= i && 0 <= y) && y <= 7) && x <= 2) && N <= i + 1) && N <= 10) && 0 <= x)) || (((N <= i + 1 && x <= 0) && 0 <= x + 7) && (((0 <= x + 2147483648 && 0 <= i) && 0 <= y) && y <= 2) && N <= 10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 36 locations, 10 error locations. SAFE Result, 127.5s OverallTime, 49 OverallIterations, 13 TraceHistogramMax, 14.3s AutomataDifference, 0.0s DeadEndRemovalTime, 87.7s HoareAnnotationTime, HoareTripleCheckerStatistics: 1469 SDtfs, 8173 SDslu, 6256 SDs, 0 SdLazy, 1594 SolverSat, 1407 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4914 GetRequests, 4380 SyntacticMatches, 0 SemanticMatches, 534 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107157occurred in iteration=46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 7 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 17.3s AutomataMinimizationTime, 49 MinimizatonAttempts, 261319 StatesRemovedByMinimization, 44 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 1839 NumberOfFragments, 6091 HoareAnnotationTreeSize, 5 FomulaSimplifications, 292925 FormulaSimplificationTreeSizeReduction, 26.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 79435 FormulaSimplificationTreeSizeReductionInter, 61.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 4790 NumberOfCodeBlocks, 4790 NumberOfCodeBlocksAsserted, 174 NumberOfCheckSat, 6972 ConstructedInterpolants, 0 QuantifiedInterpolants, 1738298 SizeOfPredicates, 2 NumberOfNonLiveVariables, 5325 ConjunctsInSsa, 298 ConjunctsInUnsatCore, 133 InterpolantComputations, 11 PerfectInterpolantSequences, 559/20934 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...