./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_10_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_10_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f26efe6943beb9bd444f2fe65e72a92241f10e89 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 03:40:45,333 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 03:40:45,335 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 03:40:45,342 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 03:40:45,342 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 03:40:45,343 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 03:40:45,344 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 03:40:45,345 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 03:40:45,346 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 03:40:45,347 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 03:40:45,347 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 03:40:45,347 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 03:40:45,348 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 03:40:45,349 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 03:40:45,349 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 03:40:45,350 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 03:40:45,350 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 03:40:45,352 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 03:40:45,353 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 03:40:45,354 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 03:40:45,355 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 03:40:45,356 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 03:40:45,358 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 03:40:45,358 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 03:40:45,358 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 03:40:45,359 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 03:40:45,360 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 03:40:45,360 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 03:40:45,361 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 03:40:45,361 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 03:40:45,362 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 03:40:45,362 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 03:40:45,362 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 03:40:45,362 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 03:40:45,363 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 03:40:45,363 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 03:40:45,364 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 03:40:45,373 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 03:40:45,373 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 03:40:45,374 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 03:40:45,374 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 03:40:45,374 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 03:40:45,374 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 03:40:45,374 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 03:40:45,374 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 03:40:45,375 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 03:40:45,375 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 03:40:45,375 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 03:40:45,375 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 03:40:45,375 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 03:40:45,375 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 03:40:45,375 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 03:40:45,375 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 03:40:45,375 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 03:40:45,376 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 03:40:45,376 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 03:40:45,376 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 03:40:45,376 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 03:40:45,376 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 03:40:45,376 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 03:40:45,376 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 03:40:45,376 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 03:40:45,376 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 03:40:45,376 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 03:40:45,376 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 03:40:45,377 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 03:40:45,377 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 03:40:45,377 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 03:40:45,377 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 03:40:45,377 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 03:40:45,377 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 03:40:45,377 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 03:40:45,377 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 03:40:45,378 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 03:40:45,378 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_854c4c02-e109-48ee-a593-3b8034d9d251/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 ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f26efe6943beb9bd444f2fe65e72a92241f10e89 [2018-11-23 03:40:45,402 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 03:40:45,411 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 03:40:45,414 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 03:40:45,415 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 03:40:45,415 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 03:40:45,415 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/bin-2019/utaipan/../../sv-benchmarks/c/recursive-simple/fibo_2calls_10_true-unreach-call.c [2018-11-23 03:40:45,460 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/bin-2019/utaipan/data/56cff68df/c4efc4120b214be0a985336bde52d8f2/FLAG9ab88e85d [2018-11-23 03:40:45,857 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 03:40:45,858 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/sv-benchmarks/c/recursive-simple/fibo_2calls_10_true-unreach-call.c [2018-11-23 03:40:45,862 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/bin-2019/utaipan/data/56cff68df/c4efc4120b214be0a985336bde52d8f2/FLAG9ab88e85d [2018-11-23 03:40:45,871 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/bin-2019/utaipan/data/56cff68df/c4efc4120b214be0a985336bde52d8f2 [2018-11-23 03:40:45,874 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 03:40:45,874 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 03:40:45,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 03:40:45,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 03:40:45,877 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 03:40:45,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:40:45" (1/1) ... [2018-11-23 03:40:45,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fb3b58b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:45, skipping insertion in model container [2018-11-23 03:40:45,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:40:45" (1/1) ... [2018-11-23 03:40:45,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 03:40:45,896 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 03:40:46,004 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 03:40:46,006 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 03:40:46,016 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 03:40:46,024 INFO L195 MainTranslator]: Completed translation [2018-11-23 03:40:46,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:46 WrapperNode [2018-11-23 03:40:46,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 03:40:46,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 03:40:46,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 03:40:46,025 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 03:40:46,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:46" (1/1) ... [2018-11-23 03:40:46,034 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:46" (1/1) ... [2018-11-23 03:40:46,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 03:40:46,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 03:40:46,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 03:40:46,038 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 03:40:46,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:46" (1/1) ... [2018-11-23 03:40:46,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:46" (1/1) ... [2018-11-23 03:40:46,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:46" (1/1) ... [2018-11-23 03:40:46,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:46" (1/1) ... [2018-11-23 03:40:46,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:46" (1/1) ... [2018-11-23 03:40:46,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:46" (1/1) ... [2018-11-23 03:40:46,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:46" (1/1) ... [2018-11-23 03:40:46,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 03:40:46,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 03:40:46,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 03:40:46,051 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 03:40:46,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/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 03:40:46,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 03:40:46,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 03:40:46,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 03:40:46,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 03:40:46,131 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 03:40:46,131 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 03:40:46,131 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2018-11-23 03:40:46,131 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2018-11-23 03:40:46,131 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2018-11-23 03:40:46,131 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2018-11-23 03:40:46,263 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 03:40:46,263 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 03:40:46,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:40:46 BoogieIcfgContainer [2018-11-23 03:40:46,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 03:40:46,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 03:40:46,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 03:40:46,267 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 03:40:46,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:40:45" (1/3) ... [2018-11-23 03:40:46,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50863db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:40:46, skipping insertion in model container [2018-11-23 03:40:46,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:46" (2/3) ... [2018-11-23 03:40:46,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50863db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:40:46, skipping insertion in model container [2018-11-23 03:40:46,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:40:46" (3/3) ... [2018-11-23 03:40:46,270 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_10_true-unreach-call.c [2018-11-23 03:40:46,279 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 03:40:46,285 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 03:40:46,298 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 03:40:46,324 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 03:40:46,324 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 03:40:46,324 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 03:40:46,325 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 03:40:46,325 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 03:40:46,325 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 03:40:46,325 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 03:40:46,325 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 03:40:46,342 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-11-23 03:40:46,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 03:40:46,346 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:40:46,346 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:40:46,348 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:40:46,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:40:46,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2018-11-23 03:40:46,354 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 03:40:46,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:40:46,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:40:46,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:40:46,384 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 03:40:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:40:46,498 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 03:40:46,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 03:40:46,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 03:40:46,500 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 03:40:46,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 03:40:46,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 03:40:46,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 03:40:46,514 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2018-11-23 03:40:46,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:40:46,573 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2018-11-23 03:40:46,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 03:40:46,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-23 03:40:46,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:40:46,581 INFO L225 Difference]: With dead ends: 44 [2018-11-23 03:40:46,581 INFO L226 Difference]: Without dead ends: 30 [2018-11-23 03:40:46,584 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 03:40:46,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-23 03:40:46,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-11-23 03:40:46,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-23 03:40:46,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2018-11-23 03:40:46,611 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2018-11-23 03:40:46,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:40:46,611 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2018-11-23 03:40:46,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 03:40:46,611 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2018-11-23 03:40:46,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-23 03:40:46,613 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:40:46,613 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:40:46,613 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:40:46,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:40:46,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2018-11-23 03:40:46,614 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 03:40:46,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:40:46,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:40:46,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:40:46,615 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 03:40:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:40:46,652 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 03:40:46,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 03:40:46,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 03:40:46,653 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 03:40:46,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 03:40:46,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 03:40:46,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 03:40:46,655 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2018-11-23 03:40:46,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:40:46,723 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2018-11-23 03:40:46,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 03:40:46,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-23 03:40:46,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:40:46,725 INFO L225 Difference]: With dead ends: 36 [2018-11-23 03:40:46,725 INFO L226 Difference]: Without dead ends: 32 [2018-11-23 03:40:46,726 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 03:40:46,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-23 03:40:46,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-11-23 03:40:46,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-23 03:40:46,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2018-11-23 03:40:46,731 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2018-11-23 03:40:46,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:40:46,731 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2018-11-23 03:40:46,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 03:40:46,732 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2018-11-23 03:40:46,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-23 03:40:46,733 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:40:46,733 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:40:46,733 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:40:46,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:40:46,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2018-11-23 03:40:46,733 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 03:40:46,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:40:46,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:40:46,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:40:46,735 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 03:40:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:40:46,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-23 03:40:46,782 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:40:46,782 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 03:40:46,783 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 27 with the following transitions: [2018-11-23 03:40:46,784 INFO L202 CegarAbsIntRunner]: [0], [4], [6], [9], [11], [18], [21], [31], [32], [36], [40], [42], [44], [45], [46], [47], [48], [50], [51], [56], [57], [58], [59] [2018-11-23 03:40:46,806 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 03:40:46,806 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 03:40:46,878 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-23 03:40:46,878 INFO L272 AbstractInterpreter]: Visited 12 different actions 12 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 3. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 5 variables. [2018-11-23 03:40:46,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:40:46,893 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-23 03:40:46,932 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 50% of their original sizes. [2018-11-23 03:40:46,932 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-23 03:40:46,962 INFO L415 sIntCurrentIteration]: We unified 25 AI predicates to 25 [2018-11-23 03:40:46,962 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-23 03:40:46,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 03:40:46,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-23 03:40:46,963 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 03:40:46,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 03:40:46,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 03:40:46,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-23 03:40:46,964 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 7 states. [2018-11-23 03:40:47,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:40:47,131 INFO L93 Difference]: Finished difference Result 72 states and 95 transitions. [2018-11-23 03:40:47,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 03:40:47,131 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2018-11-23 03:40:47,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:40:47,132 INFO L225 Difference]: With dead ends: 72 [2018-11-23 03:40:47,132 INFO L226 Difference]: Without dead ends: 48 [2018-11-23 03:40:47,132 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-23 03:40:47,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-23 03:40:47,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2018-11-23 03:40:47,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-23 03:40:47,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2018-11-23 03:40:47,139 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 26 [2018-11-23 03:40:47,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:40:47,140 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2018-11-23 03:40:47,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 03:40:47,140 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2018-11-23 03:40:47,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-23 03:40:47,141 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:40:47,141 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:40:47,142 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:40:47,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:40:47,142 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2018-11-23 03:40:47,142 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 03:40:47,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:40:47,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:40:47,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:40:47,143 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 03:40:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:40:47,204 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-23 03:40:47,205 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:40:47,205 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 03:40:47,205 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 40 with the following transitions: [2018-11-23 03:40:47,205 INFO L202 CegarAbsIntRunner]: [0], [4], [6], [9], [11], [18], [21], [22], [26], [28], [30], [31], [32], [35], [36], [40], [42], [44], [45], [46], [47], [48], [50], [51], [52], [53], [54], [55], [56], [57], [58], [59] [2018-11-23 03:40:47,207 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 03:40:47,207 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 03:40:47,470 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-23 03:40:47,470 INFO L272 AbstractInterpreter]: Visited 28 different actions 896 times. Never merged. Widened at 4 different actions 65 times. Performed 1872 root evaluator evaluations with a maximum evaluation depth of 4. Performed 1872 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 95 fixpoints after 6 different actions. Largest state had 5 variables. [2018-11-23 03:40:47,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:40:47,481 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-23 03:40:47,493 INFO L227 lantSequenceWeakener]: Weakened 7 states. On average, predicates are now at 50% of their original sizes. [2018-11-23 03:40:47,493 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-23 03:40:47,527 INFO L415 sIntCurrentIteration]: We unified 38 AI predicates to 38 [2018-11-23 03:40:47,527 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-23 03:40:47,528 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 03:40:47,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-11-23 03:40:47,528 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 03:40:47,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 03:40:47,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 03:40:47,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-23 03:40:47,529 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 9 states. [2018-11-23 03:40:47,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:40:47,732 INFO L93 Difference]: Finished difference Result 87 states and 106 transitions. [2018-11-23 03:40:47,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 03:40:47,733 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2018-11-23 03:40:47,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:40:47,734 INFO L225 Difference]: With dead ends: 87 [2018-11-23 03:40:47,734 INFO L226 Difference]: Without dead ends: 55 [2018-11-23 03:40:47,735 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-11-23 03:40:47,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-11-23 03:40:47,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-11-23 03:40:47,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-23 03:40:47,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2018-11-23 03:40:47,743 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 39 [2018-11-23 03:40:47,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:40:47,743 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2018-11-23 03:40:47,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 03:40:47,743 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2018-11-23 03:40:47,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-23 03:40:47,745 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:40:47,746 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:40:47,746 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:40:47,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:40:47,746 INFO L82 PathProgramCache]: Analyzing trace with hash -209212298, now seen corresponding path program 2 times [2018-11-23 03:40:47,747 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 03:40:47,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:40:47,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:40:47,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:40:47,748 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 03:40:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:40:47,827 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-23 03:40:47,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:40:47,827 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 03:40:47,827 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 03:40:47,828 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 03:40:47,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:40:47,829 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/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 03:40:47,836 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 03:40:47,836 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 03:40:47,867 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-23 03:40:47,868 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 03:40:47,873 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 03:40:47,963 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-23 03:40:47,964 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 03:40:48,191 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-23 03:40:48,207 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 03:40:48,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 15 [2018-11-23 03:40:48,207 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 03:40:48,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 03:40:48,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 03:40:48,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2018-11-23 03:40:48,208 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 11 states. [2018-11-23 03:40:48,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:40:48,387 INFO L93 Difference]: Finished difference Result 121 states and 177 transitions. [2018-11-23 03:40:48,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-23 03:40:48,389 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2018-11-23 03:40:48,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:40:48,391 INFO L225 Difference]: With dead ends: 121 [2018-11-23 03:40:48,391 INFO L226 Difference]: Without dead ends: 76 [2018-11-23 03:40:48,394 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 92 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2018-11-23 03:40:48,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-11-23 03:40:48,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 59. [2018-11-23 03:40:48,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-11-23 03:40:48,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2018-11-23 03:40:48,405 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 52 [2018-11-23 03:40:48,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:40:48,405 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2018-11-23 03:40:48,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 03:40:48,406 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2018-11-23 03:40:48,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-11-23 03:40:48,408 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:40:48,408 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:40:48,408 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:40:48,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:40:48,409 INFO L82 PathProgramCache]: Analyzing trace with hash -242988780, now seen corresponding path program 1 times [2018-11-23 03:40:48,409 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 03:40:48,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:40:48,410 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 03:40:48,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:40:48,413 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 03:40:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:40:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-11-23 03:40:48,476 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:40:48,476 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 03:40:48,476 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 56 with the following transitions: [2018-11-23 03:40:48,476 INFO L202 CegarAbsIntRunner]: [0], [4], [6], [9], [11], [18], [21], [22], [25], [26], [28], [30], [31], [32], [36], [39], [40], [42], [44], [45], [46], [47], [48], [50], [51], [52], [53], [54], [55], [56], [57], [58], [59] [2018-11-23 03:40:48,478 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 03:40:48,478 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 03:40:56,624 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-23 03:40:56,625 INFO L272 AbstractInterpreter]: Visited 29 different actions 61447 times. Merged at 11 different actions 16389 times. Widened at 4 different actions 3048 times. Performed 145554 root evaluator evaluations with a maximum evaluation depth of 4. Performed 145554 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 7200 fixpoints after 10 different actions. Largest state had 5 variables. [2018-11-23 03:40:56,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:40:56,629 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-23 03:40:56,642 INFO L227 lantSequenceWeakener]: Weakened 16 states. On average, predicates are now at 56.25% of their original sizes. [2018-11-23 03:40:56,643 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-23 03:40:56,726 INFO L415 sIntCurrentIteration]: We unified 54 AI predicates to 54 [2018-11-23 03:40:56,726 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-23 03:40:56,726 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 03:40:56,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [7] total 18 [2018-11-23 03:40:56,726 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 03:40:56,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-23 03:40:56,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-23 03:40:56,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-11-23 03:40:56,727 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 13 states. [2018-11-23 03:40:57,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:40:57,054 INFO L93 Difference]: Finished difference Result 118 states and 151 transitions. [2018-11-23 03:40:57,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-23 03:40:57,054 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2018-11-23 03:40:57,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:40:57,055 INFO L225 Difference]: With dead ends: 118 [2018-11-23 03:40:57,055 INFO L226 Difference]: Without dead ends: 77 [2018-11-23 03:40:57,056 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2018-11-23 03:40:57,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-11-23 03:40:57,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-11-23 03:40:57,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-11-23 03:40:57,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2018-11-23 03:40:57,066 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 55 [2018-11-23 03:40:57,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:40:57,066 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2018-11-23 03:40:57,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-23 03:40:57,067 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2018-11-23 03:40:57,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-11-23 03:40:57,070 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:40:57,070 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:40:57,070 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:40:57,070 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:40:57,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1937391112, now seen corresponding path program 1 times [2018-11-23 03:40:57,070 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 03:40:57,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:40:57,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:40:57,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:40:57,072 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 03:40:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:40:57,147 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 27 proven. 26 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-11-23 03:40:57,147 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:40:57,147 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 03:40:57,147 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 81 with the following transitions: [2018-11-23 03:40:57,147 INFO L202 CegarAbsIntRunner]: [0], [4], [6], [9], [11], [18], [22], [25], [26], [28], [30], [31], [32], [35], [36], [39], [40], [42], [44], [45], [46], [47], [48], [50], [51], [52], [53], [54], [55], [56], [57], [58], [59] [2018-11-23 03:40:57,148 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 03:40:57,149 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 03:40:59,130 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-23 03:40:59,130 INFO L272 AbstractInterpreter]: Visited 29 different actions 20375 times. Merged at 11 different actions 5233 times. Widened at 3 different actions 1140 times. Performed 47351 root evaluator evaluations with a maximum evaluation depth of 4. Performed 47351 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 2539 fixpoints after 9 different actions. Largest state had 5 variables. [2018-11-23 03:40:59,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:40:59,278 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-23 03:40:59,288 INFO L227 lantSequenceWeakener]: Weakened 13 states. On average, predicates are now at 50% of their original sizes. [2018-11-23 03:40:59,288 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-23 03:40:59,337 INFO L415 sIntCurrentIteration]: We unified 79 AI predicates to 79 [2018-11-23 03:40:59,337 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-23 03:40:59,338 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 03:40:59,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-11-23 03:40:59,338 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 03:40:59,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-23 03:40:59,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-23 03:40:59,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-11-23 03:40:59,339 INFO L87 Difference]: Start difference. First operand 77 states and 93 transitions. Second operand 13 states. [2018-11-23 03:40:59,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:40:59,660 INFO L93 Difference]: Finished difference Result 141 states and 176 transitions. [2018-11-23 03:40:59,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-23 03:40:59,660 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 80 [2018-11-23 03:40:59,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:40:59,661 INFO L225 Difference]: With dead ends: 141 [2018-11-23 03:40:59,661 INFO L226 Difference]: Without dead ends: 86 [2018-11-23 03:40:59,662 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 84 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2018-11-23 03:40:59,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-11-23 03:40:59,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-11-23 03:40:59,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-11-23 03:40:59,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 103 transitions. [2018-11-23 03:40:59,673 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 103 transitions. Word has length 80 [2018-11-23 03:40:59,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:40:59,673 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 103 transitions. [2018-11-23 03:40:59,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-23 03:40:59,673 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 103 transitions. [2018-11-23 03:40:59,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-11-23 03:40:59,675 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:40:59,675 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:40:59,675 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:40:59,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:40:59,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1541382103, now seen corresponding path program 1 times [2018-11-23 03:40:59,675 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 03:40:59,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:40:59,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:40:59,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:40:59,676 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 03:40:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:40:59,741 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 55 proven. 13 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-11-23 03:40:59,742 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:40:59,742 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 03:40:59,742 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 95 with the following transitions: [2018-11-23 03:40:59,742 INFO L202 CegarAbsIntRunner]: [0], [4], [6], [9], [11], [18], [21], [22], [25], [26], [28], [30], [31], [32], [35], [36], [39], [40], [42], [44], [45], [46], [47], [48], [50], [51], [52], [53], [54], [55], [56], [57], [58], [59] [2018-11-23 03:40:59,743 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 03:40:59,743 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 03:44:50,922 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 03:44:50,923 INFO L272 AbstractInterpreter]: Visited 34 different actions 2187354 times. Merged at 16 different actions 690606 times. Widened at 4 different actions 72333 times. Performed 5379148 root evaluator evaluations with a maximum evaluation depth of 4. Performed 5379148 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 310049 fixpoints after 10 different actions. Largest state had 5 variables. [2018-11-23 03:44:50,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:44:50,924 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 03:44:50,924 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:44:50,924 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/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 03:44:50,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:44:50,931 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 03:44:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:44:50,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 03:44:51,040 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 23 proven. 81 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-11-23 03:44:51,040 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 03:44:51,732 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 23 proven. 97 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-11-23 03:44:51,750 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 03:44:51,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 15] total 21 [2018-11-23 03:44:51,750 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 03:44:51,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-23 03:44:51,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-23 03:44:51,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2018-11-23 03:44:51,751 INFO L87 Difference]: Start difference. First operand 86 states and 103 transitions. Second operand 14 states. [2018-11-23 03:44:51,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:44:51,958 INFO L93 Difference]: Finished difference Result 231 states and 393 transitions. [2018-11-23 03:44:51,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-23 03:44:51,958 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 94 [2018-11-23 03:44:51,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:44:51,960 INFO L225 Difference]: With dead ends: 231 [2018-11-23 03:44:51,960 INFO L226 Difference]: Without dead ends: 143 [2018-11-23 03:44:51,961 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 162 SyntacticMatches, 13 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=757, Unknown=0, NotChecked=0, Total=930 [2018-11-23 03:44:51,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-11-23 03:44:51,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 98. [2018-11-23 03:44:51,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-11-23 03:44:51,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 128 transitions. [2018-11-23 03:44:51,978 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 128 transitions. Word has length 94 [2018-11-23 03:44:51,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:44:51,979 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 128 transitions. [2018-11-23 03:44:51,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-23 03:44:51,979 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 128 transitions. [2018-11-23 03:44:51,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-11-23 03:44:51,982 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:44:51,982 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 11, 10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:44:51,982 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:44:51,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:44:51,982 INFO L82 PathProgramCache]: Analyzing trace with hash -334045017, now seen corresponding path program 1 times [2018-11-23 03:44:51,982 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 03:44:51,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:44:51,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:44:51,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:44:51,983 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 03:44:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:44:52,096 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 99 proven. 184 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2018-11-23 03:44:52,096 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:44:52,096 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 03:44:52,096 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 176 with the following transitions: [2018-11-23 03:44:52,096 INFO L202 CegarAbsIntRunner]: [0], [4], [6], [9], [11], [18], [21], [22], [26], [28], [30], [31], [32], [35], [36], [39], [40], [42], [44], [45], [46], [47], [48], [50], [51], [52], [53], [54], [55], [56], [57], [58], [59] [2018-11-23 03:44:52,097 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 03:44:52,097 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 03:44:54,114 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-23 03:44:54,114 INFO L272 AbstractInterpreter]: Visited 29 different actions 27751 times. Merged at 11 different actions 6717 times. Widened at 4 different actions 1741 times. Performed 67659 root evaluator evaluations with a maximum evaluation depth of 4. Performed 67659 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 3522 fixpoints after 9 different actions. Largest state had 5 variables. [2018-11-23 03:44:54,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:44:54,116 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-23 03:44:54,136 INFO L227 lantSequenceWeakener]: Weakened 37 states. On average, predicates are now at 57.21% of their original sizes. [2018-11-23 03:44:54,136 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-23 03:44:54,270 INFO L415 sIntCurrentIteration]: We unified 174 AI predicates to 174 [2018-11-23 03:44:54,270 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-23 03:44:54,271 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 03:44:54,271 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [11] total 32 [2018-11-23 03:44:54,271 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 03:44:54,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-23 03:44:54,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-23 03:44:54,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2018-11-23 03:44:54,271 INFO L87 Difference]: Start difference. First operand 98 states and 128 transitions. Second operand 23 states. [2018-11-23 03:44:55,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:44:55,026 INFO L93 Difference]: Finished difference Result 223 states and 325 transitions. [2018-11-23 03:44:55,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-23 03:44:55,026 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 175 [2018-11-23 03:44:55,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:44:55,027 INFO L225 Difference]: With dead ends: 223 [2018-11-23 03:44:55,027 INFO L226 Difference]: Without dead ends: 153 [2018-11-23 03:44:55,028 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 198 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2018-11-23 03:44:55,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-11-23 03:44:55,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 127. [2018-11-23 03:44:55,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-11-23 03:44:55,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 162 transitions. [2018-11-23 03:44:55,042 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 162 transitions. Word has length 175 [2018-11-23 03:44:55,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:44:55,042 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 162 transitions. [2018-11-23 03:44:55,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-23 03:44:55,042 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 162 transitions. [2018-11-23 03:44:55,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-11-23 03:44:55,043 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:44:55,043 INFO L402 BasicCegarLoop]: trace histogram [19, 19, 13, 12, 12, 9, 9, 9, 9, 9, 9, 9, 9, 7, 6, 6, 6, 6, 6, 6, 6, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:44:55,044 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:44:55,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:44:55,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1327733822, now seen corresponding path program 2 times [2018-11-23 03:44:55,044 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 03:44:55,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:44:55,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:44:55,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:44:55,045 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 03:44:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:44:55,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 286 proven. 12 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2018-11-23 03:44:55,229 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:44:55,229 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 03:44:55,229 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 03:44:55,229 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 03:44:55,229 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:44:55,229 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/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 03:44:55,236 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 03:44:55,236 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 03:44:55,255 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-23 03:44:55,255 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 03:44:55,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 03:44:55,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 301 proven. 3 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2018-11-23 03:44:55,318 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 03:44:55,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 223 proven. 5 refuted. 0 times theorem prover too weak. 1038 trivial. 0 not checked. [2018-11-23 03:44:55,622 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 03:44:55,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2018-11-23 03:44:55,622 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 03:44:55,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-23 03:44:55,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-23 03:44:55,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2018-11-23 03:44:55,623 INFO L87 Difference]: Start difference. First operand 127 states and 162 transitions. Second operand 16 states. [2018-11-23 03:44:55,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:44:55,778 INFO L93 Difference]: Finished difference Result 255 states and 402 transitions. [2018-11-23 03:44:55,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 03:44:55,779 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 215 [2018-11-23 03:44:55,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:44:55,781 INFO L225 Difference]: With dead ends: 255 [2018-11-23 03:44:55,781 INFO L226 Difference]: Without dead ends: 152 [2018-11-23 03:44:55,781 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 418 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2018-11-23 03:44:55,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-11-23 03:44:55,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 140. [2018-11-23 03:44:55,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-11-23 03:44:55,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 199 transitions. [2018-11-23 03:44:55,793 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 199 transitions. Word has length 215 [2018-11-23 03:44:55,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:44:55,793 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 199 transitions. [2018-11-23 03:44:55,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-23 03:44:55,793 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 199 transitions. [2018-11-23 03:44:55,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-11-23 03:44:55,796 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:44:55,797 INFO L402 BasicCegarLoop]: trace histogram [21, 21, 14, 14, 14, 14, 10, 10, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:44:55,797 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:44:55,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:44:55,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1584661804, now seen corresponding path program 2 times [2018-11-23 03:44:55,797 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 03:44:55,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:44:55,798 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 03:44:55,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:44:55,798 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 03:44:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:44:55,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 137 proven. 322 refuted. 0 times theorem prover too weak. 1191 trivial. 0 not checked. [2018-11-23 03:44:55,943 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:44:55,943 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 03:44:55,943 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 03:44:55,943 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 03:44:55,943 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:44:55,943 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/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 03:44:55,950 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 03:44:55,950 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 03:44:55,975 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-11-23 03:44:55,975 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 03:44:55,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 03:44:56,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 433 proven. 37 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2018-11-23 03:44:56,089 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 03:44:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 433 proven. 38 refuted. 0 times theorem prover too weak. 1179 trivial. 0 not checked. [2018-11-23 03:44:56,620 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 03:44:56,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 13] total 23 [2018-11-23 03:44:56,620 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 03:44:56,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-23 03:44:56,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-23 03:44:56,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2018-11-23 03:44:56,621 INFO L87 Difference]: Start difference. First operand 140 states and 199 transitions. Second operand 18 states. [2018-11-23 03:44:56,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:44:56,970 INFO L93 Difference]: Finished difference Result 330 states and 563 transitions. [2018-11-23 03:44:56,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-23 03:44:56,970 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 245 [2018-11-23 03:44:56,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:44:56,972 INFO L225 Difference]: With dead ends: 330 [2018-11-23 03:44:56,972 INFO L226 Difference]: Without dead ends: 207 [2018-11-23 03:44:56,973 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 469 SyntacticMatches, 11 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=281, Invalid=1359, Unknown=0, NotChecked=0, Total=1640 [2018-11-23 03:44:56,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-11-23 03:44:56,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 186. [2018-11-23 03:44:56,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-11-23 03:44:56,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 258 transitions. [2018-11-23 03:44:56,987 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 258 transitions. Word has length 245 [2018-11-23 03:44:56,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:44:56,988 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 258 transitions. [2018-11-23 03:44:56,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-23 03:44:56,988 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 258 transitions. [2018-11-23 03:44:56,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-11-23 03:44:56,991 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:44:56,991 INFO L402 BasicCegarLoop]: trace histogram [19, 19, 16, 16, 14, 13, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:44:56,992 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:44:56,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:44:56,992 INFO L82 PathProgramCache]: Analyzing trace with hash -207855780, now seen corresponding path program 2 times [2018-11-23 03:44:56,992 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 03:44:56,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:44:56,993 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 03:44:56,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:44:56,993 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 03:44:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:44:57,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1589 backedges. 138 proven. 263 refuted. 0 times theorem prover too weak. 1188 trivial. 0 not checked. [2018-11-23 03:44:57,072 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:44:57,072 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 03:44:57,072 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 03:44:57,073 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 03:44:57,073 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:44:57,073 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/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 03:44:57,080 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 03:44:57,080 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 03:44:57,121 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-23 03:44:57,121 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 03:44:57,124 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 03:44:57,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1589 backedges. 267 proven. 52 refuted. 0 times theorem prover too weak. 1270 trivial. 0 not checked. [2018-11-23 03:44:57,198 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 03:44:57,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1589 backedges. 269 proven. 55 refuted. 0 times theorem prover too weak. 1265 trivial. 0 not checked. [2018-11-23 03:44:57,650 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 03:44:57,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 20 [2018-11-23 03:44:57,651 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 03:44:57,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-23 03:44:57,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-23 03:44:57,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2018-11-23 03:44:57,652 INFO L87 Difference]: Start difference. First operand 186 states and 258 transitions. Second operand 15 states. [2018-11-23 03:44:57,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:44:57,935 INFO L93 Difference]: Finished difference Result 414 states and 664 transitions. [2018-11-23 03:44:57,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-23 03:44:57,935 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 244 [2018-11-23 03:44:57,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:44:57,938 INFO L225 Difference]: With dead ends: 414 [2018-11-23 03:44:57,938 INFO L226 Difference]: Without dead ends: 251 [2018-11-23 03:44:57,940 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 470 SyntacticMatches, 8 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=767, Unknown=0, NotChecked=0, Total=930 [2018-11-23 03:44:57,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-11-23 03:44:57,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 203. [2018-11-23 03:44:57,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-11-23 03:44:57,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 295 transitions. [2018-11-23 03:44:57,961 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 295 transitions. Word has length 244 [2018-11-23 03:44:57,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:44:57,961 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 295 transitions. [2018-11-23 03:44:57,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-23 03:44:57,961 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 295 transitions. [2018-11-23 03:44:57,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-11-23 03:44:57,964 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:44:57,965 INFO L402 BasicCegarLoop]: trace histogram [34, 34, 27, 27, 27, 24, 17, 17, 17, 17, 17, 17, 17, 14, 13, 13, 13, 13, 13, 13, 13, 7, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:44:57,965 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:44:57,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:44:57,965 INFO L82 PathProgramCache]: Analyzing trace with hash 634163973, now seen corresponding path program 3 times [2018-11-23 03:44:57,965 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 03:44:57,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:44:57,966 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 03:44:57,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:44:57,966 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 03:44:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:44:58,204 INFO L134 CoverageAnalysis]: Checked inductivity of 5131 backedges. 333 proven. 327 refuted. 0 times theorem prover too weak. 4471 trivial. 0 not checked. [2018-11-23 03:44:58,204 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:44:58,204 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 03:44:58,204 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 03:44:58,205 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 03:44:58,205 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:44:58,205 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/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 03:44:58,224 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 03:44:58,224 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-23 03:44:58,292 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 03:44:58,292 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 03:44:58,299 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 03:44:58,432 INFO L134 CoverageAnalysis]: Checked inductivity of 5131 backedges. 145 proven. 1042 refuted. 0 times theorem prover too weak. 3944 trivial. 0 not checked. [2018-11-23 03:44:58,432 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 03:44:59,893 INFO L134 CoverageAnalysis]: Checked inductivity of 5131 backedges. 145 proven. 1075 refuted. 0 times theorem prover too weak. 3911 trivial. 0 not checked. [2018-11-23 03:44:59,908 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 03:44:59,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 19] total 25 [2018-11-23 03:44:59,909 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 03:44:59,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-23 03:44:59,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-23 03:44:59,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2018-11-23 03:44:59,910 INFO L87 Difference]: Start difference. First operand 203 states and 295 transitions. Second operand 16 states. [2018-11-23 03:45:00,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:45:00,157 INFO L93 Difference]: Finished difference Result 549 states and 1039 transitions. [2018-11-23 03:45:00,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-23 03:45:00,157 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 424 [2018-11-23 03:45:00,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:45:00,161 INFO L225 Difference]: With dead ends: 549 [2018-11-23 03:45:00,161 INFO L226 Difference]: Without dead ends: 334 [2018-11-23 03:45:00,163 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 865 GetRequests, 815 SyntacticMatches, 16 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=225, Invalid=1035, Unknown=0, NotChecked=0, Total=1260 [2018-11-23 03:45:00,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-11-23 03:45:00,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 229. [2018-11-23 03:45:00,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-11-23 03:45:00,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 344 transitions. [2018-11-23 03:45:00,189 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 344 transitions. Word has length 424 [2018-11-23 03:45:00,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:45:00,189 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 344 transitions. [2018-11-23 03:45:00,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-23 03:45:00,189 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 344 transitions. [2018-11-23 03:45:00,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2018-11-23 03:45:00,193 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:45:00,194 INFO L402 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 38, 36, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 15, 13, 11, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:45:00,194 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:45:00,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:45:00,194 INFO L82 PathProgramCache]: Analyzing trace with hash -2049906179, now seen corresponding path program 4 times [2018-11-23 03:45:00,194 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 03:45:00,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:45:00,195 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 03:45:00,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:45:00,195 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 03:45:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:45:00,635 INFO L134 CoverageAnalysis]: Checked inductivity of 11821 backedges. 397 proven. 1488 refuted. 0 times theorem prover too weak. 9936 trivial. 0 not checked. [2018-11-23 03:45:00,635 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:45:00,635 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 03:45:00,635 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 03:45:00,635 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 03:45:00,635 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:45:00,635 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/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 03:45:00,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:45:00,642 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 03:45:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:45:00,730 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 03:45:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 11821 backedges. 293 proven. 1808 refuted. 0 times theorem prover too weak. 9720 trivial. 0 not checked. [2018-11-23 03:45:00,914 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 03:45:03,102 INFO L134 CoverageAnalysis]: Checked inductivity of 11821 backedges. 293 proven. 1852 refuted. 0 times theorem prover too weak. 9676 trivial. 0 not checked. [2018-11-23 03:45:03,117 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 03:45:03,118 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 21] total 32 [2018-11-23 03:45:03,118 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 03:45:03,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-23 03:45:03,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-23 03:45:03,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2018-11-23 03:45:03,119 INFO L87 Difference]: Start difference. First operand 229 states and 344 transitions. Second operand 23 states. [2018-11-23 03:45:03,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:45:03,883 INFO L93 Difference]: Finished difference Result 697 states and 1387 transitions. [2018-11-23 03:45:03,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-11-23 03:45:03,884 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 639 [2018-11-23 03:45:03,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:45:03,889 INFO L225 Difference]: With dead ends: 697 [2018-11-23 03:45:03,889 INFO L226 Difference]: Without dead ends: 429 [2018-11-23 03:45:03,893 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1324 GetRequests, 1243 SyntacticMatches, 19 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=650, Invalid=3382, Unknown=0, NotChecked=0, Total=4032 [2018-11-23 03:45:03,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2018-11-23 03:45:03,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 393. [2018-11-23 03:45:03,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2018-11-23 03:45:03,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 680 transitions. [2018-11-23 03:45:03,931 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 680 transitions. Word has length 639 [2018-11-23 03:45:03,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:45:03,931 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 680 transitions. [2018-11-23 03:45:03,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-23 03:45:03,931 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 680 transitions. [2018-11-23 03:45:03,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1269 [2018-11-23 03:45:03,944 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:45:03,944 INFO L402 BasicCegarLoop]: trace histogram [104, 104, 81, 81, 76, 75, 52, 52, 52, 52, 52, 52, 52, 40, 40, 40, 40, 40, 40, 40, 35, 29, 24, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:45:03,944 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:45:03,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:45:03,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1679217653, now seen corresponding path program 5 times [2018-11-23 03:45:03,945 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 03:45:03,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:45:03,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:45:03,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:45:03,946 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 03:45:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:45:04,629 INFO L134 CoverageAnalysis]: Checked inductivity of 48433 backedges. 702 proven. 2831 refuted. 0 times theorem prover too weak. 44900 trivial. 0 not checked. [2018-11-23 03:45:04,629 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:45:04,629 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 03:45:04,629 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 03:45:04,629 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 03:45:04,630 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:45:04,630 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/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 03:45:04,636 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 03:45:04,636 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 03:45:04,722 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-11-23 03:45:04,722 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 03:45:04,736 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 03:45:05,302 INFO L134 CoverageAnalysis]: Checked inductivity of 48433 backedges. 10163 proven. 7 refuted. 0 times theorem prover too weak. 38263 trivial. 0 not checked. [2018-11-23 03:45:05,302 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 03:45:07,241 INFO L134 CoverageAnalysis]: Checked inductivity of 48433 backedges. 2477 proven. 189 refuted. 0 times theorem prover too weak. 45767 trivial. 0 not checked. [2018-11-23 03:45:07,266 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 03:45:07,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 16 [2018-11-23 03:45:07,267 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 03:45:07,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-23 03:45:07,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-23 03:45:07,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2018-11-23 03:45:07,268 INFO L87 Difference]: Start difference. First operand 393 states and 680 transitions. Second operand 13 states. [2018-11-23 03:45:07,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:45:07,465 INFO L93 Difference]: Finished difference Result 748 states and 1392 transitions. [2018-11-23 03:45:07,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 03:45:07,466 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1268 [2018-11-23 03:45:07,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:45:07,470 INFO L225 Difference]: With dead ends: 748 [2018-11-23 03:45:07,470 INFO L226 Difference]: Without dead ends: 382 [2018-11-23 03:45:07,474 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2551 GetRequests, 2525 SyntacticMatches, 7 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2018-11-23 03:45:07,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-11-23 03:45:07,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 370. [2018-11-23 03:45:07,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2018-11-23 03:45:07,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 613 transitions. [2018-11-23 03:45:07,506 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 613 transitions. Word has length 1268 [2018-11-23 03:45:07,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:45:07,506 INFO L480 AbstractCegarLoop]: Abstraction has 370 states and 613 transitions. [2018-11-23 03:45:07,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-23 03:45:07,506 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 613 transitions. [2018-11-23 03:45:07,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2018-11-23 03:45:07,513 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:45:07,513 INFO L402 BasicCegarLoop]: trace histogram [58, 58, 53, 53, 46, 43, 29, 29, 29, 29, 29, 29, 29, 26, 26, 26, 26, 26, 26, 26, 17, 17, 15, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:45:07,513 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:45:07,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:45:07,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1397306292, now seen corresponding path program 6 times [2018-11-23 03:45:07,514 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 03:45:07,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:45:07,514 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 03:45:07,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:45:07,515 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 03:45:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:45:07,999 INFO L134 CoverageAnalysis]: Checked inductivity of 16986 backedges. 504 proven. 1942 refuted. 0 times theorem prover too weak. 14540 trivial. 0 not checked. [2018-11-23 03:45:07,999 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:45:07,999 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 03:45:07,999 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 03:45:07,999 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 03:45:07,999 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:45:07,999 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/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 03:45:08,008 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 03:45:08,008 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-23 03:45:08,103 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 03:45:08,103 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 03:45:08,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 03:45:08,337 INFO L134 CoverageAnalysis]: Checked inductivity of 16986 backedges. 445 proven. 1842 refuted. 0 times theorem prover too weak. 14699 trivial. 0 not checked. [2018-11-23 03:45:08,337 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 03:45:10,196 INFO L134 CoverageAnalysis]: Checked inductivity of 16986 backedges. 445 proven. 1875 refuted. 0 times theorem prover too weak. 14666 trivial. 0 not checked. [2018-11-23 03:45:10,211 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 03:45:10,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 19] total 30 [2018-11-23 03:45:10,212 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 03:45:10,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-23 03:45:10,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-23 03:45:10,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2018-11-23 03:45:10,213 INFO L87 Difference]: Start difference. First operand 370 states and 613 transitions. Second operand 22 states. [2018-11-23 03:45:10,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:45:10,927 INFO L93 Difference]: Finished difference Result 846 states and 1547 transitions. [2018-11-23 03:45:10,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-23 03:45:10,929 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 762 [2018-11-23 03:45:10,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:45:10,935 INFO L225 Difference]: With dead ends: 846 [2018-11-23 03:45:10,935 INFO L226 Difference]: Without dead ends: 502 [2018-11-23 03:45:10,939 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1567 GetRequests, 1493 SyntacticMatches, 17 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=564, Invalid=2858, Unknown=0, NotChecked=0, Total=3422 [2018-11-23 03:45:10,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2018-11-23 03:45:10,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 384. [2018-11-23 03:45:10,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2018-11-23 03:45:10,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 620 transitions. [2018-11-23 03:45:10,976 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 620 transitions. Word has length 762 [2018-11-23 03:45:10,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:45:10,977 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 620 transitions. [2018-11-23 03:45:10,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-23 03:45:10,978 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 620 transitions. [2018-11-23 03:45:10,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1661 [2018-11-23 03:45:10,996 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:45:10,996 INFO L402 BasicCegarLoop]: trace histogram [127, 127, 116, 116, 103, 92, 63, 63, 63, 63, 63, 63, 63, 58, 58, 58, 58, 58, 58, 58, 45, 29, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:45:10,997 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:45:10,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:45:10,998 INFO L82 PathProgramCache]: Analyzing trace with hash -218295398, now seen corresponding path program 7 times [2018-11-23 03:45:10,998 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 03:45:10,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:45:10,999 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 03:45:10,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:45:10,999 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 03:45:11,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:45:12,376 INFO L134 CoverageAnalysis]: Checked inductivity of 82547 backedges. 3423 proven. 2689 refuted. 0 times theorem prover too weak. 76435 trivial. 0 not checked. [2018-11-23 03:45:12,376 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:45:12,376 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 03:45:12,376 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 03:45:12,376 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 03:45:12,376 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:45:12,377 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/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 03:45:12,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:45:12,382 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 03:45:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:45:12,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 03:45:13,462 INFO L134 CoverageAnalysis]: Checked inductivity of 82547 backedges. 810 proven. 5298 refuted. 0 times theorem prover too weak. 76439 trivial. 0 not checked. [2018-11-23 03:45:13,463 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 03:45:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 82547 backedges. 810 proven. 5338 refuted. 0 times theorem prover too weak. 76399 trivial. 0 not checked. [2018-11-23 03:45:17,401 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 03:45:17,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 22] total 33 [2018-11-23 03:45:17,402 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 03:45:17,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-23 03:45:17,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-23 03:45:17,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=865, Unknown=0, NotChecked=0, Total=1056 [2018-11-23 03:45:17,403 INFO L87 Difference]: Start difference. First operand 384 states and 620 transitions. Second operand 23 states. [2018-11-23 03:45:17,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:45:17,708 INFO L93 Difference]: Finished difference Result 667 states and 1420 transitions. [2018-11-23 03:45:17,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-23 03:45:17,708 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1660 [2018-11-23 03:45:17,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:45:17,712 INFO L225 Difference]: With dead ends: 667 [2018-11-23 03:45:17,713 INFO L226 Difference]: Without dead ends: 255 [2018-11-23 03:45:17,716 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3355 GetRequests, 3291 SyntacticMatches, 20 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=409, Invalid=1661, Unknown=0, NotChecked=0, Total=2070 [2018-11-23 03:45:17,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-11-23 03:45:17,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 247. [2018-11-23 03:45:17,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-11-23 03:45:17,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 325 transitions. [2018-11-23 03:45:17,729 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 325 transitions. Word has length 1660 [2018-11-23 03:45:17,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:45:17,729 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 325 transitions. [2018-11-23 03:45:17,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-23 03:45:17,730 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 325 transitions. [2018-11-23 03:45:17,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 941 [2018-11-23 03:45:17,734 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:45:17,734 INFO L402 BasicCegarLoop]: trace histogram [69, 69, 68, 68, 56, 55, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 22, 21, 14, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:45:17,734 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:45:17,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:45:17,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1748064113, now seen corresponding path program 8 times [2018-11-23 03:45:17,735 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 03:45:17,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:45:17,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:45:17,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:45:17,736 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 03:45:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:45:18,199 INFO L134 CoverageAnalysis]: Checked inductivity of 26009 backedges. 617 proven. 2964 refuted. 0 times theorem prover too weak. 22428 trivial. 0 not checked. [2018-11-23 03:45:18,199 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:45:18,200 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 03:45:18,200 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 03:45:18,200 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 03:45:18,200 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:45:18,200 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/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 03:45:18,207 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 03:45:18,207 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 03:45:18,271 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2018-11-23 03:45:18,271 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 03:45:18,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 03:45:18,669 INFO L134 CoverageAnalysis]: Checked inductivity of 26009 backedges. 5327 proven. 63 refuted. 0 times theorem prover too weak. 20619 trivial. 0 not checked. [2018-11-23 03:45:18,670 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 03:45:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 26009 backedges. 2231 proven. 191 refuted. 0 times theorem prover too weak. 23587 trivial. 0 not checked. [2018-11-23 03:45:20,131 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 03:45:20,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 13] total 26 [2018-11-23 03:45:20,132 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 03:45:20,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-23 03:45:20,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-23 03:45:20,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2018-11-23 03:45:20,133 INFO L87 Difference]: Start difference. First operand 247 states and 325 transitions. Second operand 21 states. [2018-11-23 03:45:20,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:45:20,595 INFO L93 Difference]: Finished difference Result 522 states and 795 transitions. [2018-11-23 03:45:20,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-23 03:45:20,596 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 940 [2018-11-23 03:45:20,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:45:20,598 INFO L225 Difference]: With dead ends: 522 [2018-11-23 03:45:20,598 INFO L226 Difference]: Without dead ends: 291 [2018-11-23 03:45:20,599 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1916 GetRequests, 1863 SyntacticMatches, 11 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=309, Invalid=1583, Unknown=0, NotChecked=0, Total=1892 [2018-11-23 03:45:20,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-11-23 03:45:20,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 267. [2018-11-23 03:45:20,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-11-23 03:45:20,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 342 transitions. [2018-11-23 03:45:20,621 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 342 transitions. Word has length 940 [2018-11-23 03:45:20,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:45:20,621 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 342 transitions. [2018-11-23 03:45:20,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-23 03:45:20,621 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 342 transitions. [2018-11-23 03:45:20,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2018-11-23 03:45:20,628 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:45:20,629 INFO L402 BasicCegarLoop]: trace histogram [75, 75, 68, 68, 60, 55, 37, 37, 37, 37, 37, 37, 37, 34, 34, 34, 34, 34, 34, 34, 26, 18, 15, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:45:20,629 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:45:20,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:45:20,629 INFO L82 PathProgramCache]: Analyzing trace with hash 484310296, now seen corresponding path program 9 times [2018-11-23 03:45:20,629 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 03:45:20,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:45:20,630 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 03:45:20,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:45:20,630 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 03:45:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:45:21,175 INFO L134 CoverageAnalysis]: Checked inductivity of 28375 backedges. 1202 proven. 1920 refuted. 0 times theorem prover too weak. 25253 trivial. 0 not checked. [2018-11-23 03:45:21,175 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:45:21,175 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 03:45:21,175 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 03:45:21,175 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 03:45:21,175 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:45:21,175 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/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 03:45:21,181 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 03:45:21,182 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-23 03:45:21,285 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 03:45:21,286 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 03:45:21,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 03:45:21,644 INFO L134 CoverageAnalysis]: Checked inductivity of 28375 backedges. 735 proven. 2252 refuted. 0 times theorem prover too weak. 25388 trivial. 0 not checked. [2018-11-23 03:45:21,645 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 03:45:23,706 INFO L134 CoverageAnalysis]: Checked inductivity of 28375 backedges. 737 proven. 2283 refuted. 0 times theorem prover too weak. 25355 trivial. 0 not checked. [2018-11-23 03:45:23,721 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 03:45:23,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 19] total 31 [2018-11-23 03:45:23,722 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 03:45:23,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-23 03:45:23,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-23 03:45:23,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=816, Unknown=0, NotChecked=0, Total=930 [2018-11-23 03:45:23,723 INFO L87 Difference]: Start difference. First operand 267 states and 342 transitions. Second operand 23 states. [2018-11-23 03:45:24,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:45:24,331 INFO L93 Difference]: Finished difference Result 544 states and 744 transitions. [2018-11-23 03:45:24,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-23 03:45:24,331 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 980 [2018-11-23 03:45:24,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:45:24,334 INFO L225 Difference]: With dead ends: 544 [2018-11-23 03:45:24,334 INFO L226 Difference]: Without dead ends: 264 [2018-11-23 03:45:24,336 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2004 GetRequests, 1930 SyntacticMatches, 17 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=580, Invalid=2842, Unknown=0, NotChecked=0, Total=3422 [2018-11-23 03:45:24,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-11-23 03:45:24,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 254. [2018-11-23 03:45:24,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-11-23 03:45:24,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 308 transitions. [2018-11-23 03:45:24,354 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 308 transitions. Word has length 980 [2018-11-23 03:45:24,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:45:24,355 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 308 transitions. [2018-11-23 03:45:24,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-23 03:45:24,355 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 308 transitions. [2018-11-23 03:45:24,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1063 [2018-11-23 03:45:24,362 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:45:24,363 INFO L402 BasicCegarLoop]: trace histogram [80, 80, 75, 75, 63, 62, 40, 40, 40, 40, 40, 40, 40, 37, 37, 37, 37, 37, 37, 37, 26, 22, 17, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:45:24,363 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:45:24,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:45:24,363 INFO L82 PathProgramCache]: Analyzing trace with hash -2035244028, now seen corresponding path program 10 times [2018-11-23 03:45:24,363 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 03:45:24,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:45:24,364 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 03:45:24,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:45:24,364 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 03:45:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:45:24,953 INFO L134 CoverageAnalysis]: Checked inductivity of 33368 backedges. 2276 proven. 1688 refuted. 0 times theorem prover too weak. 29404 trivial. 0 not checked. [2018-11-23 03:45:24,954 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:45:24,954 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 03:45:24,954 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 03:45:24,954 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 03:45:24,954 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:45:24,954 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/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 03:45:24,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:45:24,960 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 03:45:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:45:25,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 03:45:25,496 INFO L134 CoverageAnalysis]: Checked inductivity of 33368 backedges. 1598 proven. 1247 refuted. 0 times theorem prover too weak. 30523 trivial. 0 not checked. [2018-11-23 03:45:25,496 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 03:45:27,340 INFO L134 CoverageAnalysis]: Checked inductivity of 33368 backedges. 1604 proven. 1265 refuted. 0 times theorem prover too weak. 30499 trivial. 0 not checked. [2018-11-23 03:45:27,356 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 03:45:27,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 17] total 31 [2018-11-23 03:45:27,356 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 03:45:27,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-23 03:45:27,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-23 03:45:27,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2018-11-23 03:45:27,357 INFO L87 Difference]: Start difference. First operand 254 states and 308 transitions. Second operand 24 states. [2018-11-23 03:45:28,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:45:28,251 INFO L93 Difference]: Finished difference Result 510 states and 680 transitions. [2018-11-23 03:45:28,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-11-23 03:45:28,251 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 1062 [2018-11-23 03:45:28,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:45:28,254 INFO L225 Difference]: With dead ends: 510 [2018-11-23 03:45:28,254 INFO L226 Difference]: Without dead ends: 335 [2018-11-23 03:45:28,256 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2182 GetRequests, 2100 SyntacticMatches, 15 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1237 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=679, Invalid=4013, Unknown=0, NotChecked=0, Total=4692 [2018-11-23 03:45:28,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-11-23 03:45:28,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 285. [2018-11-23 03:45:28,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-11-23 03:45:28,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 344 transitions. [2018-11-23 03:45:28,276 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 344 transitions. Word has length 1062 [2018-11-23 03:45:28,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:45:28,277 INFO L480 AbstractCegarLoop]: Abstraction has 285 states and 344 transitions. [2018-11-23 03:45:28,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-23 03:45:28,277 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 344 transitions. [2018-11-23 03:45:28,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1145 [2018-11-23 03:45:28,287 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:45:28,287 INFO L402 BasicCegarLoop]: trace histogram [85, 85, 82, 82, 68, 67, 42, 42, 42, 42, 42, 42, 42, 41, 41, 41, 41, 41, 41, 41, 27, 25, 17, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:45:28,287 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:45:28,287 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:45:28,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1566192488, now seen corresponding path program 11 times [2018-11-23 03:45:28,288 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 03:45:28,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:45:28,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:45:28,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:45:28,289 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 03:45:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:45:28,851 INFO L134 CoverageAnalysis]: Checked inductivity of 38777 backedges. 2232 proven. 2049 refuted. 0 times theorem prover too weak. 34496 trivial. 0 not checked. [2018-11-23 03:45:28,851 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:45:28,851 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 03:45:28,851 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 03:45:28,851 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 03:45:28,851 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:45:28,852 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/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 03:45:28,858 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 03:45:28,859 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 03:45:29,059 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2018-11-23 03:45:29,060 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 03:45:29,068 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 03:45:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 38777 backedges. 20592 proven. 161 refuted. 0 times theorem prover too weak. 18024 trivial. 0 not checked. [2018-11-23 03:45:29,435 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 03:45:31,388 INFO L134 CoverageAnalysis]: Checked inductivity of 38777 backedges. 2068 proven. 1621 refuted. 0 times theorem prover too weak. 35088 trivial. 0 not checked. [2018-11-23 03:45:31,404 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 03:45:31,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 17] total 30 [2018-11-23 03:45:31,404 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 03:45:31,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-23 03:45:31,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-23 03:45:31,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2018-11-23 03:45:31,405 INFO L87 Difference]: Start difference. First operand 285 states and 344 transitions. Second operand 23 states. [2018-11-23 03:45:32,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:45:32,017 INFO L93 Difference]: Finished difference Result 509 states and 634 transitions. [2018-11-23 03:45:32,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-11-23 03:45:32,017 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1144 [2018-11-23 03:45:32,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:45:32,018 INFO L225 Difference]: With dead ends: 509 [2018-11-23 03:45:32,018 INFO L226 Difference]: Without dead ends: 329 [2018-11-23 03:45:32,019 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2340 GetRequests, 2265 SyntacticMatches, 15 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=583, Invalid=3199, Unknown=0, NotChecked=0, Total=3782 [2018-11-23 03:45:32,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-11-23 03:45:32,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 308. [2018-11-23 03:45:32,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2018-11-23 03:45:32,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 371 transitions. [2018-11-23 03:45:32,033 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 371 transitions. Word has length 1144 [2018-11-23 03:45:32,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:45:32,034 INFO L480 AbstractCegarLoop]: Abstraction has 308 states and 371 transitions. [2018-11-23 03:45:32,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-23 03:45:32,034 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 371 transitions. [2018-11-23 03:45:32,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1145 [2018-11-23 03:45:32,040 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:45:32,040 INFO L402 BasicCegarLoop]: trace histogram [84, 84, 83, 83, 68, 67, 42, 42, 42, 42, 42, 42, 42, 41, 41, 41, 41, 41, 41, 41, 26, 26, 17, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:45:32,040 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:45:32,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:45:32,040 INFO L82 PathProgramCache]: Analyzing trace with hash 980558134, now seen corresponding path program 12 times [2018-11-23 03:45:32,040 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 03:45:32,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:45:32,041 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 03:45:32,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:45:32,041 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 03:45:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:45:32,530 INFO L134 CoverageAnalysis]: Checked inductivity of 38769 backedges. 4072 proven. 821 refuted. 0 times theorem prover too weak. 33876 trivial. 0 not checked. [2018-11-23 03:45:32,531 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:45:32,531 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 03:45:32,531 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 03:45:32,531 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 03:45:32,531 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:45:32,531 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/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 03:45:32,538 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 03:45:32,538 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-23 03:45:32,647 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 03:45:32,647 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 03:45:32,655 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 03:45:33,052 INFO L134 CoverageAnalysis]: Checked inductivity of 38769 backedges. 2691 proven. 394 refuted. 0 times theorem prover too weak. 35684 trivial. 0 not checked. [2018-11-23 03:45:33,053 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 03:45:35,126 INFO L134 CoverageAnalysis]: Checked inductivity of 38769 backedges. 2699 proven. 410 refuted. 0 times theorem prover too weak. 35660 trivial. 0 not checked. [2018-11-23 03:45:35,143 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 03:45:35,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12, 17] total 32 [2018-11-23 03:45:35,143 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 03:45:35,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-23 03:45:35,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-23 03:45:35,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=878, Unknown=0, NotChecked=0, Total=992 [2018-11-23 03:45:35,145 INFO L87 Difference]: Start difference. First operand 308 states and 371 transitions. Second operand 25 states. [2018-11-23 03:45:35,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:45:35,870 INFO L93 Difference]: Finished difference Result 367 states and 444 transitions. [2018-11-23 03:45:35,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-11-23 03:45:35,870 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 1144 [2018-11-23 03:45:35,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:45:35,872 INFO L225 Difference]: With dead ends: 367 [2018-11-23 03:45:35,872 INFO L226 Difference]: Without dead ends: 340 [2018-11-23 03:45:35,873 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2349 GetRequests, 2267 SyntacticMatches, 15 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1263 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=658, Invalid=4034, Unknown=0, NotChecked=0, Total=4692 [2018-11-23 03:45:35,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-11-23 03:45:35,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 309. [2018-11-23 03:45:35,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-11-23 03:45:35,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 368 transitions. [2018-11-23 03:45:35,899 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 368 transitions. Word has length 1144 [2018-11-23 03:45:35,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:45:35,900 INFO L480 AbstractCegarLoop]: Abstraction has 309 states and 368 transitions. [2018-11-23 03:45:35,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-23 03:45:35,900 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 368 transitions. [2018-11-23 03:45:35,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1213 [2018-11-23 03:45:35,909 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:45:35,910 INFO L402 BasicCegarLoop]: trace histogram [89, 89, 88, 88, 72, 71, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 28, 27, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:45:35,910 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:45:35,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:45:35,910 INFO L82 PathProgramCache]: Analyzing trace with hash 416823031, now seen corresponding path program 13 times [2018-11-23 03:45:35,910 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 03:45:35,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:45:35,911 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 03:45:35,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:45:35,911 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 03:45:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:45:38,108 INFO L134 CoverageAnalysis]: Checked inductivity of 43585 backedges. 0 proven. 14453 refuted. 0 times theorem prover too weak. 29132 trivial. 0 not checked. [2018-11-23 03:45:38,108 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:45:38,108 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 03:45:38,108 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 03:45:38,108 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 03:45:38,108 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:45:38,108 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/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 03:45:38,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:45:38,114 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 03:45:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:45:38,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 03:45:39,992 INFO L134 CoverageAnalysis]: Checked inductivity of 43585 backedges. 0 proven. 14453 refuted. 0 times theorem prover too weak. 29132 trivial. 0 not checked. [2018-11-23 03:45:39,992 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 03:45:48,339 INFO L134 CoverageAnalysis]: Checked inductivity of 43585 backedges. 0 proven. 14453 refuted. 0 times theorem prover too weak. 29132 trivial. 0 not checked. [2018-11-23 03:45:48,355 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 03:45:48,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 68 [2018-11-23 03:45:48,356 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 03:45:48,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-11-23 03:45:48,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-11-23 03:45:48,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=4391, Unknown=0, NotChecked=0, Total=4556 [2018-11-23 03:45:48,357 INFO L87 Difference]: Start difference. First operand 309 states and 368 transitions. Second operand 68 states. [2018-11-23 03:45:48,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:45:48,973 INFO L93 Difference]: Finished difference Result 319 states and 377 transitions. [2018-11-23 03:45:48,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-11-23 03:45:48,973 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 1212 [2018-11-23 03:45:48,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:45:48,976 INFO L225 Difference]: With dead ends: 319 [2018-11-23 03:45:48,976 INFO L226 Difference]: Without dead ends: 303 [2018-11-23 03:45:48,977 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2780 GetRequests, 2534 SyntacticMatches, 180 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=165, Invalid=4391, Unknown=0, NotChecked=0, Total=4556 [2018-11-23 03:45:48,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-11-23 03:45:49,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2018-11-23 03:45:49,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-11-23 03:45:49,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 356 transitions. [2018-11-23 03:45:49,002 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 356 transitions. Word has length 1212 [2018-11-23 03:45:49,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:45:49,002 INFO L480 AbstractCegarLoop]: Abstraction has 303 states and 356 transitions. [2018-11-23 03:45:49,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-11-23 03:45:49,003 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 356 transitions. [2018-11-23 03:45:49,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1104 [2018-11-23 03:45:49,010 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:45:49,011 INFO L402 BasicCegarLoop]: trace histogram [81, 81, 80, 80, 65, 65, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 25, 25, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:45:49,011 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:45:49,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:45:49,011 INFO L82 PathProgramCache]: Analyzing trace with hash 356340105, now seen corresponding path program 14 times [2018-11-23 03:45:49,011 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 03:45:49,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:45:49,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:45:49,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:45:49,012 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 03:45:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:45:49,609 INFO L134 CoverageAnalysis]: Checked inductivity of 36000 backedges. 2151 proven. 820 refuted. 0 times theorem prover too weak. 33029 trivial. 0 not checked. [2018-11-23 03:45:49,609 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:45:49,609 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 03:45:49,609 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 03:45:49,609 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 03:45:49,609 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 03:45:49,609 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/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 03:45:49,620 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 03:45:49,620 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 03:45:49,731 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-11-23 03:45:49,731 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 03:45:49,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 03:45:50,132 INFO L134 CoverageAnalysis]: Checked inductivity of 36000 backedges. 3365 proven. 354 refuted. 0 times theorem prover too weak. 32281 trivial. 0 not checked. [2018-11-23 03:45:50,132 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 03:45:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 36000 backedges. 3367 proven. 361 refuted. 0 times theorem prover too weak. 32272 trivial. 0 not checked. [2018-11-23 03:45:52,020 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 03:45:52,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 19] total 30 [2018-11-23 03:45:52,021 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 03:45:52,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-23 03:45:52,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-23 03:45:52,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2018-11-23 03:45:52,022 INFO L87 Difference]: Start difference. First operand 303 states and 356 transitions. Second operand 22 states. [2018-11-23 03:45:52,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:45:52,613 INFO L93 Difference]: Finished difference Result 320 states and 380 transitions. [2018-11-23 03:45:52,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-11-23 03:45:52,613 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 1103 [2018-11-23 03:45:52,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:45:52,614 INFO L225 Difference]: With dead ends: 320 [2018-11-23 03:45:52,614 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 03:45:52,616 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2253 GetRequests, 2177 SyntacticMatches, 17 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 891 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=580, Invalid=3080, Unknown=0, NotChecked=0, Total=3660 [2018-11-23 03:45:52,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 03:45:52,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 03:45:52,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 03:45:52,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 03:45:52,616 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1103 [2018-11-23 03:45:52,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:45:52,617 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 03:45:52,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-23 03:45:52,617 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 03:45:52,617 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 03:45:52,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 03:45:52,655 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:52,676 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:52,691 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:52,710 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:52,758 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:52,780 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,045 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,065 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,124 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,140 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,144 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,155 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,164 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,168 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,183 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,222 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,223 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,229 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,256 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,261 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,263 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,269 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,271 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,273 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,294 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,296 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,344 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,376 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,385 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,390 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,396 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,399 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,400 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,408 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,410 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,419 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,420 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,436 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,441 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,443 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,451 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,454 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,456 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,466 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,474 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,499 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,507 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,577 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,578 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,585 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,589 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,597 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,618 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,626 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,628 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,634 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,636 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,638 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,657 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,663 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,665 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,670 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,673 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,710 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,714 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,720 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,732 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,735 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,749 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,767 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,770 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,776 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,809 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,811 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,862 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,866 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,868 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,873 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,875 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,877 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,890 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,902 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,905 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,911 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,916 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,937 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,950 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,952 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,970 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,974 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,976 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,981 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,983 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:53,991 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,016 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,017 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,025 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,027 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,034 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,039 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,043 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,063 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,088 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,089 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,094 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,098 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,117 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,139 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,143 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,153 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,163 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,164 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,174 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,186 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,187 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,190 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,193 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,194 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,197 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,202 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,210 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,222 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,228 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,230 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,238 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,240 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,252 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,264 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,278 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,300 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,310 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,331 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,337 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,339 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,344 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,346 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,348 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,374 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,390 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,392 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,397 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,402 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,404 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,406 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,438 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,462 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,471 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,472 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,482 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,502 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,503 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,511 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,516 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,518 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,525 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,548 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,554 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,555 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,556 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,556 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,562 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,563 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,569 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,595 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,596 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,623 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,631 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,632 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,641 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,641 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,647 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,649 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,657 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,658 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,663 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,669 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,672 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,677 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,678 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,685 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,695 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,706 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,710 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,712 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,730 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,731 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,737 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,747 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,760 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,769 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,770 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,772 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,774 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,775 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,778 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,784 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,791 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,800 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,801 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,815 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,818 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,833 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,834 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,845 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,850 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,856 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,858 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,869 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,872 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,880 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,881 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,895 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,898 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,900 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,904 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,906 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,907 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,917 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,918 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,919 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,919 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,924 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,929 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,931 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,937 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,946 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,950 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,952 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,966 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,969 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,988 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,991 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:54,996 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,010 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,013 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,015 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,047 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,083 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,086 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,118 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,118 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,119 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,134 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,147 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,177 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,198 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,198 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,205 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,265 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,296 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,297 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,341 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,341 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,344 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,380 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,385 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,385 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,395 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,414 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,414 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,417 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,417 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,438 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,439 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,443 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,444 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,446 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,447 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,493 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,493 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,530 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,531 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,559 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,565 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,565 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,618 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,618 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,656 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,657 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,661 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,725 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,726 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,727 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,729 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,730 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,731 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,745 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,747 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,747 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,749 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,750 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,751 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,909 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,909 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,929 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,929 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,933 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,934 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,949 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,950 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,979 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,979 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,983 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,983 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,990 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,991 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,995 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:55,996 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:56,001 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:56,003 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:56,004 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:56,008 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:56,012 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:56,013 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:56,040 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:56,041 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:56,071 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:56,076 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:56,076 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:56,078 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:56,078 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:56,080 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:56,080 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:56,095 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:56,095 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:56,104 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:56,104 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:56,107 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:56,107 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:56,110 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:56,111 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 03:45:56,443 WARN L180 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 9 [2018-11-23 03:45:56,578 WARN L180 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 1 [2018-11-23 03:45:56,691 WARN L180 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 1 [2018-11-23 03:45:58,043 WARN L180 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 371 DAG size of output: 58 [2018-11-23 03:45:58,456 WARN L180 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 8 [2018-11-23 03:45:59,277 WARN L180 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 52 [2018-11-23 03:45:59,279 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 03:45:59,279 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 03:45:59,279 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 03:45:59,279 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 03:45:59,280 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 03:45:59,280 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 03:45:59,280 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2018-11-23 03:45:59,280 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 35 42) the Hoare annotation is: true [2018-11-23 03:45:59,280 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 35 42) no Hoare annotation was computed. [2018-11-23 03:45:59,280 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 35 42) no Hoare annotation was computed. [2018-11-23 03:45:59,280 INFO L448 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2018-11-23 03:45:59,280 INFO L448 ceAbstractionStarter]: For program point L38(lines 38 40) no Hoare annotation was computed. [2018-11-23 03:45:59,280 INFO L444 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: (= main_~x~0 10) [2018-11-23 03:45:59,280 INFO L448 ceAbstractionStarter]: For program point L37-1(line 37) no Hoare annotation was computed. [2018-11-23 03:45:59,280 INFO L448 ceAbstractionStarter]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2018-11-23 03:45:59,280 INFO L451 ceAbstractionStarter]: At program point fibo2ENTRY(lines 17 25) the Hoare annotation is: true [2018-11-23 03:45:59,280 INFO L444 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (and (< 2 |fibo2_#in~n|) (<= fibo2_~n |fibo2_#in~n|) (<= |fibo2_#in~n| fibo2_~n)) [2018-11-23 03:45:59,280 INFO L448 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-11-23 03:45:59,281 INFO L444 ceAbstractionStarter]: At program point L23-2(line 23) the Hoare annotation is: (let ((.cse0 (<= |fibo2_#in~n| fibo2_~n)) (.cse1 (< 4 |fibo2_#in~n|))) (and (or (<= |fibo2_#in~n| 5) (and (<= 7 |fibo2_#in~n|) .cse0) (and (<= |fibo2_#t~ret2| 5) (<= |fibo2_#in~n| 6) (<= 5 |fibo2_#t~ret2|))) (or (and (= fibo2_~n 4) (<= 4 |fibo2_#in~n|)) .cse1) (let ((.cse2 (<= fibo2_~n |fibo2_#in~n|))) (or (and (<= |fibo2_#t~ret2| 3) .cse0 .cse2 (<= 3 |fibo2_#t~ret2|)) (<= |fibo2_#in~n| 4) (and (<= 6 fibo2_~n) .cse2))) (or (<= fibo2_~n 7) (<= 9 |fibo2_#in~n|) (and (<= |fibo2_#t~ret2| 13) (<= 13 |fibo2_#t~ret2|))) (or (and (<= |fibo2_#t~ret2| 2) (<= 2 |fibo2_#t~ret2|)) .cse1) (or (and (<= |fibo2_#t~ret2| 8) (<= 8 |fibo2_#t~ret2|)) (not (= |fibo2_#in~n| 7))) (or (not (= |fibo2_#in~n| 9)) (and (<= 21 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 21))))) [2018-11-23 03:45:59,281 INFO L448 ceAbstractionStarter]: For program point L20(lines 20 24) no Hoare annotation was computed. [2018-11-23 03:45:59,281 INFO L448 ceAbstractionStarter]: For program point L23-3(line 23) no Hoare annotation was computed. [2018-11-23 03:45:59,281 INFO L448 ceAbstractionStarter]: For program point L18(lines 18 24) no Hoare annotation was computed. [2018-11-23 03:45:59,281 INFO L448 ceAbstractionStarter]: For program point fibo2FINAL(lines 17 25) no Hoare annotation was computed. [2018-11-23 03:45:59,281 INFO L448 ceAbstractionStarter]: For program point fibo2EXIT(lines 17 25) no Hoare annotation was computed. [2018-11-23 03:45:59,281 INFO L451 ceAbstractionStarter]: At program point fibo1ENTRY(lines 7 15) the Hoare annotation is: true [2018-11-23 03:45:59,281 INFO L444 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: (and (< 2 |fibo1_#in~n|) (<= fibo1_~n |fibo1_#in~n|) (<= |fibo1_#in~n| fibo1_~n)) [2018-11-23 03:45:59,281 INFO L448 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-11-23 03:45:59,281 INFO L444 ceAbstractionStarter]: At program point L13-2(line 13) the Hoare annotation is: (and (or (<= |fibo1_#in~n| 3) (<= 6 |fibo1_#in~n|)) (<= fibo1_~n |fibo1_#in~n|) (or (and (<= 8 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 8)) (<= fibo1_~n 6) (<= 8 |fibo1_#in~n|)) (or (not (= |fibo1_#in~n| 10)) (and (<= |fibo1_#t~ret0| 34) (<= 34 |fibo1_#t~ret0|))) (or (< |fibo1_#in~n| 4) (<= 7 |fibo1_#in~n|) (and (<= |fibo1_#t~ret0| 5) (<= 5 |fibo1_#t~ret0|))) (or (and (<= 1 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 1)) (< 4 |fibo1_#in~n|)) (<= 3 |fibo1_#in~n|) (or (not (= |fibo1_#in~n| 8)) (and (<= |fibo1_#t~ret0| 13) (<= 13 |fibo1_#t~ret0|))) (<= |fibo1_#in~n| fibo1_~n)) [2018-11-23 03:45:59,282 INFO L448 ceAbstractionStarter]: For program point fibo1FINAL(lines 7 15) no Hoare annotation was computed. [2018-11-23 03:45:59,282 INFO L448 ceAbstractionStarter]: For program point L10(lines 10 14) no Hoare annotation was computed. [2018-11-23 03:45:59,282 INFO L448 ceAbstractionStarter]: For program point L13-3(line 13) no Hoare annotation was computed. [2018-11-23 03:45:59,282 INFO L448 ceAbstractionStarter]: For program point L8(lines 8 14) no Hoare annotation was computed. [2018-11-23 03:45:59,282 INFO L448 ceAbstractionStarter]: For program point fibo1EXIT(lines 7 15) no Hoare annotation was computed. [2018-11-23 03:45:59,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:45:59 BoogieIcfgContainer [2018-11-23 03:45:59,284 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 03:45:59,284 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 03:45:59,284 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 03:45:59,285 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 03:45:59,285 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:40:46" (3/4) ... [2018-11-23 03:45:59,288 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 03:45:59,293 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 03:45:59,293 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 03:45:59,293 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2018-11-23 03:45:59,293 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2018-11-23 03:45:59,299 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-23 03:45:59,299 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-23 03:45:59,300 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 03:45:59,326 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_854c4c02-e109-48ee-a593-3b8034d9d251/bin-2019/utaipan/witness.graphml [2018-11-23 03:45:59,326 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 03:45:59,327 INFO L168 Benchmark]: Toolchain (without parser) took 313452.86 ms. Allocated memory was 1.0 GB in the beginning and 6.6 GB in the end (delta: 5.5 GB). Free memory was 962.3 MB in the beginning and 5.6 GB in the end (delta: -4.7 GB). Peak memory consumption was 886.0 MB. Max. memory is 11.5 GB. [2018-11-23 03:45:59,327 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 982.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 03:45:59,327 INFO L168 Benchmark]: CACSL2BoogieTranslator took 149.96 ms. Allocated memory is still 1.0 GB. Free memory was 962.3 MB in the beginning and 951.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 03:45:59,328 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.70 ms. Allocated memory is still 1.0 GB. Free memory was 951.6 MB in the beginning and 946.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-23 03:45:59,328 INFO L168 Benchmark]: Boogie Preprocessor took 12.59 ms. Allocated memory is still 1.0 GB. Free memory is still 946.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 03:45:59,328 INFO L168 Benchmark]: RCFGBuilder took 212.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -177.7 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-23 03:45:59,328 INFO L168 Benchmark]: TraceAbstraction took 313019.86 ms. Allocated memory was 1.2 GB in the beginning and 6.6 GB in the end (delta: 5.4 GB). Free memory was 1.1 GB in the beginning and 5.6 GB in the end (delta: -4.5 GB). Peak memory consumption was 3.1 GB. Max. memory is 11.5 GB. [2018-11-23 03:45:59,329 INFO L168 Benchmark]: Witness Printer took 41.76 ms. Allocated memory is still 6.6 GB. Free memory was 5.6 GB in the beginning and 5.6 GB in the end (delta: 19.5 kB). Peak memory consumption was 19.5 kB. Max. memory is 11.5 GB. [2018-11-23 03:45:59,330 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 982.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 149.96 ms. Allocated memory is still 1.0 GB. Free memory was 962.3 MB in the beginning and 951.6 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 12.70 ms. Allocated memory is still 1.0 GB. Free memory was 951.6 MB in the beginning and 946.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.59 ms. Allocated memory is still 1.0 GB. Free memory is still 946.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 212.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -177.7 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 313019.86 ms. Allocated memory was 1.2 GB in the beginning and 6.6 GB in the end (delta: 5.4 GB). Free memory was 1.1 GB in the beginning and 5.6 GB in the end (delta: -4.5 GB). Peak memory consumption was 3.1 GB. Max. memory is 11.5 GB. * Witness Printer took 41.76 ms. Allocated memory is still 6.6 GB. Free memory was 5.6 GB in the beginning and 5.6 GB in the end (delta: 19.5 kB). Peak memory consumption was 19.5 kB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. SAFE Result, 312.9s OverallTime, 24 OverallIterations, 127 TraceHistogramMax, 9.9s AutomataDifference, 0.0s DeadEndRemovalTime, 6.6s HoareAnnotationTime, HoareTripleCheckerStatistics: 951 SDtfs, 2006 SDslu, 10980 SDs, 0 SdLazy, 11594 SolverSat, 2054 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 27708 GetRequests, 26448 SyntacticMatches, 394 SemanticMatches, 866 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9746 ImplicationChecksByTransitivity, 10.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=393occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 243.8s AbstIntTime, 6 AbstIntIterations, 5 AbstIntStrong, 0.8747747747747748 AbsIntWeakeningRatio, 0.5783783783783784 AbsIntAvgWeakeningVarsNumRemoved, 0.1972972972972973 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 24 MinimizatonAttempts, 588 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 2141 PreInvPairs, 4570 NumberOfFragments, 223 HoareAnnotationTreeSize, 2141 FomulaSimplifications, 869608 FormulaSimplificationTreeSizeReduction, 3.4s HoareSimplificationTime, 11 FomulaSimplificationsInter, 370438 FormulaSimplificationTreeSizeReductionInter, 3.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 43.8s InterpolantComputationTime, 26778 NumberOfCodeBlocks, 22901 NumberOfCodeBlocksAsserted, 151 NumberOfCheckSat, 39908 ConstructedInterpolants, 0 QuantifiedInterpolants, 61911451 SizeOfPredicates, 122 NumberOfNonLiveVariables, 20308 ConjunctsInSsa, 943 ConjunctsInUnsatCore, 58 InterpolantComputations, 2 PerfectInterpolantSequences, 1149534/1244592 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...