./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/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 cd6d4490a7412402195d3193de0347508566f7c8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 06:56:19,262 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 06:56:19,263 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 06:56:19,270 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 06:56:19,270 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 06:56:19,271 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 06:56:19,271 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 06:56:19,273 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 06:56:19,274 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 06:56:19,274 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 06:56:19,275 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 06:56:19,275 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 06:56:19,275 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 06:56:19,276 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 06:56:19,277 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 06:56:19,277 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 06:56:19,278 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 06:56:19,279 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 06:56:19,280 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 06:56:19,282 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 06:56:19,282 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 06:56:19,283 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 06:56:19,285 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 06:56:19,285 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 06:56:19,286 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 06:56:19,286 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 06:56:19,287 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 06:56:19,288 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 06:56:19,288 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 06:56:19,289 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 06:56:19,289 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 06:56:19,290 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 06:56:19,290 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 06:56:19,290 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 06:56:19,290 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 06:56:19,291 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 06:56:19,291 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 06:56:19,301 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 06:56:19,301 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 06:56:19,302 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 06:56:19,302 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 06:56:19,302 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 06:56:19,302 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 06:56:19,302 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 06:56:19,302 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 06:56:19,303 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 06:56:19,303 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 06:56:19,303 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 06:56:19,303 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 06:56:19,303 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 06:56:19,304 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 06:56:19,304 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 06:56:19,304 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 06:56:19,304 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 06:56:19,304 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 06:56:19,304 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 06:56:19,304 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 06:56:19,304 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 06:56:19,305 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 06:56:19,305 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 06:56:19,305 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 06:56:19,306 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 06:56:19,307 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 06:56:19,307 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 06:56:19,307 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 06:56:19,307 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 06:56:19,307 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 06:56:19,307 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 06:56:19,307 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 06:56:19,307 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 06:56:19,307 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 06:56:19,308 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_71028725-bc7f-47cd-93b4-c71e856c8403/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 -> cd6d4490a7412402195d3193de0347508566f7c8 [2018-11-10 06:56:19,332 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 06:56:19,341 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 06:56:19,344 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 06:56:19,345 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 06:56:19,345 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 06:56:19,346 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/bin-2019/utaipan/../../sv-benchmarks/c/recursive-simple/fibo_2calls_8_true-unreach-call_true-termination.c [2018-11-10 06:56:19,386 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/bin-2019/utaipan/data/c908ecb28/7ea12a5bd3434bc29e763b22bebdd2e7/FLAG4f343d11c [2018-11-10 06:56:19,687 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 06:56:19,687 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/sv-benchmarks/c/recursive-simple/fibo_2calls_8_true-unreach-call_true-termination.c [2018-11-10 06:56:19,692 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/bin-2019/utaipan/data/c908ecb28/7ea12a5bd3434bc29e763b22bebdd2e7/FLAG4f343d11c [2018-11-10 06:56:19,704 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/bin-2019/utaipan/data/c908ecb28/7ea12a5bd3434bc29e763b22bebdd2e7 [2018-11-10 06:56:19,707 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 06:56:19,708 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 06:56:19,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 06:56:19,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 06:56:19,712 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 06:56:19,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:56:19" (1/1) ... [2018-11-10 06:56:19,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29fd796b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:56:19, skipping insertion in model container [2018-11-10 06:56:19,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:56:19" (1/1) ... [2018-11-10 06:56:19,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 06:56:19,737 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 06:56:19,846 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 06:56:19,849 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 06:56:19,860 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 06:56:19,868 INFO L193 MainTranslator]: Completed translation [2018-11-10 06:56:19,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:56:19 WrapperNode [2018-11-10 06:56:19,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 06:56:19,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 06:56:19,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 06:56:19,869 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 06:56:19,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:56:19" (1/1) ... [2018-11-10 06:56:19,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:56:19" (1/1) ... [2018-11-10 06:56:19,881 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 06:56:19,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 06:56:19,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 06:56:19,882 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 06:56:19,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:56:19" (1/1) ... [2018-11-10 06:56:19,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:56:19" (1/1) ... [2018-11-10 06:56:19,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:56:19" (1/1) ... [2018-11-10 06:56:19,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:56:19" (1/1) ... [2018-11-10 06:56:19,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:56:19" (1/1) ... [2018-11-10 06:56:19,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:56:19" (1/1) ... [2018-11-10 06:56:19,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:56:19" (1/1) ... [2018-11-10 06:56:19,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 06:56:19,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 06:56:19,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 06:56:19,893 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 06:56:19,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:56:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/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 [2018-11-10 06:56:19,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 06:56:19,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 06:56:19,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 06:56:19,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 06:56:19,968 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 06:56:19,968 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 06:56:19,969 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2018-11-10 06:56:19,969 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2018-11-10 06:56:19,969 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2018-11-10 06:56:19,969 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2018-11-10 06:56:20,072 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 06:56:20,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:56:20 BoogieIcfgContainer [2018-11-10 06:56:20,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 06:56:20,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 06:56:20,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 06:56:20,075 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 06:56:20,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:56:19" (1/3) ... [2018-11-10 06:56:20,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e8a47f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:56:20, skipping insertion in model container [2018-11-10 06:56:20,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:56:19" (2/3) ... [2018-11-10 06:56:20,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e8a47f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:56:20, skipping insertion in model container [2018-11-10 06:56:20,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:56:20" (3/3) ... [2018-11-10 06:56:20,077 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8_true-unreach-call_true-termination.c [2018-11-10 06:56:20,082 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 06:56:20,086 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 06:56:20,095 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 06:56:20,119 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 06:56:20,120 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 06:56:20,120 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 06:56:20,120 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 06:56:20,120 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 06:56:20,120 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 06:56:20,120 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 06:56:20,120 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 06:56:20,135 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-11-10 06:56:20,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-10 06:56:20,139 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:56:20,140 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:56:20,142 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:56:20,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:20,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2018-11-10 06:56:20,147 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:56:20,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:20,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:56:20,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:20,182 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:56:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:20,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 06:56:20,260 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 06:56:20,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 06:56:20,260 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 06:56:20,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 06:56:20,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 06:56:20,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 06:56:20,273 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2018-11-10 06:56:20,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:56:20,350 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2018-11-10 06:56:20,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 06:56:20,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-10 06:56:20,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:56:20,358 INFO L225 Difference]: With dead ends: 44 [2018-11-10 06:56:20,358 INFO L226 Difference]: Without dead ends: 30 [2018-11-10 06:56:20,361 INFO L605 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 [2018-11-10 06:56:20,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-10 06:56:20,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-11-10 06:56:20,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-10 06:56:20,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2018-11-10 06:56:20,389 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2018-11-10 06:56:20,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:56:20,389 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2018-11-10 06:56:20,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 06:56:20,389 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2018-11-10 06:56:20,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-10 06:56:20,390 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:56:20,390 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:56:20,391 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:56:20,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:20,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2018-11-10 06:56:20,391 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:56:20,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:20,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:56:20,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:20,392 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:56:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 06:56:20,447 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 06:56:20,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 06:56:20,447 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 06:56:20,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 06:56:20,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 06:56:20,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 06:56:20,449 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2018-11-10 06:56:20,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:56:20,522 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2018-11-10 06:56:20,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 06:56:20,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-10 06:56:20,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:56:20,524 INFO L225 Difference]: With dead ends: 36 [2018-11-10 06:56:20,524 INFO L226 Difference]: Without dead ends: 32 [2018-11-10 06:56:20,525 INFO L605 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 [2018-11-10 06:56:20,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-10 06:56:20,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-11-10 06:56:20,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-10 06:56:20,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2018-11-10 06:56:20,529 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2018-11-10 06:56:20,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:56:20,530 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2018-11-10 06:56:20,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 06:56:20,530 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2018-11-10 06:56:20,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-10 06:56:20,530 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:56:20,530 INFO L375 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] [2018-11-10 06:56:20,531 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:56:20,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:20,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2018-11-10 06:56:20,531 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:56:20,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:20,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:56:20,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:20,532 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:56:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:20,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 06:56:20,603 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:20,603 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:56:20,603 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 27 with the following transitions: [2018-11-10 06:56:20,605 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] [2018-11-10 06:56:20,635 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 06:56:20,635 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 06:56:20,702 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-10 06:56:20,703 INFO L272 AbstractInterpreter]: Visited 12 different actions 12 times. Never merged. Never widened. Never found a fixpoint. Largest state had 5 variables. [2018-11-10 06:56:20,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:20,709 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-10 06:56:20,745 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 50% of their original sizes. [2018-11-10 06:56:20,745 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-10 06:56:20,794 INFO L415 sIntCurrentIteration]: We unified 25 AI predicates to 25 [2018-11-10 06:56:20,794 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-10 06:56:20,795 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 06:56:20,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-10 06:56:20,795 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 06:56:20,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 06:56:20,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 06:56:20,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-10 06:56:20,796 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 7 states. [2018-11-10 06:56:20,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:56:20,983 INFO L93 Difference]: Finished difference Result 72 states and 95 transitions. [2018-11-10 06:56:20,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 06:56:20,983 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2018-11-10 06:56:20,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:56:20,984 INFO L225 Difference]: With dead ends: 72 [2018-11-10 06:56:20,984 INFO L226 Difference]: Without dead ends: 48 [2018-11-10 06:56:20,985 INFO L605 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 [2018-11-10 06:56:20,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-10 06:56:20,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2018-11-10 06:56:20,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-10 06:56:20,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2018-11-10 06:56:20,995 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 26 [2018-11-10 06:56:20,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:56:20,996 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2018-11-10 06:56:20,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 06:56:20,996 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2018-11-10 06:56:20,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-10 06:56:20,998 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:56:20,998 INFO L375 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] [2018-11-10 06:56:20,998 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:56:20,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:20,998 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2018-11-10 06:56:20,999 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:56:20,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:20,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:56:20,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:20,999 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:56:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:21,056 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-10 06:56:21,056 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:21,056 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:56:21,056 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 40 with the following transitions: [2018-11-10 06:56:21,056 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] [2018-11-10 06:56:21,058 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 06:56:21,058 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 06:56:21,084 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-10 06:56:21,084 INFO L272 AbstractInterpreter]: Visited 16 different actions 46 times. Never merged. Widened at 2 different actions 3 times. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2018-11-10 06:56:21,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:21,086 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-10 06:56:21,107 INFO L227 lantSequenceWeakener]: Weakened 7 states. On average, predicates are now at 50% of their original sizes. [2018-11-10 06:56:21,107 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-10 06:56:21,154 INFO L415 sIntCurrentIteration]: We unified 38 AI predicates to 38 [2018-11-10 06:56:21,154 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-10 06:56:21,154 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 06:56:21,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-11-10 06:56:21,154 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 06:56:21,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 06:56:21,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 06:56:21,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-10 06:56:21,155 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 9 states. [2018-11-10 06:56:21,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:56:21,418 INFO L93 Difference]: Finished difference Result 87 states and 106 transitions. [2018-11-10 06:56:21,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 06:56:21,418 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2018-11-10 06:56:21,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:56:21,419 INFO L225 Difference]: With dead ends: 87 [2018-11-10 06:56:21,419 INFO L226 Difference]: Without dead ends: 55 [2018-11-10 06:56:21,419 INFO L605 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 [2018-11-10 06:56:21,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-11-10 06:56:21,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-11-10 06:56:21,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-10 06:56:21,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2018-11-10 06:56:21,425 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 39 [2018-11-10 06:56:21,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:56:21,426 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2018-11-10 06:56:21,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 06:56:21,426 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2018-11-10 06:56:21,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-10 06:56:21,427 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:56:21,427 INFO L375 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] [2018-11-10 06:56:21,427 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:56:21,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:21,427 INFO L82 PathProgramCache]: Analyzing trace with hash -209212298, now seen corresponding path program 2 times [2018-11-10 06:56:21,427 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:56:21,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:21,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:56:21,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:21,428 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:56:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:21,480 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-10 06:56:21,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:21,481 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:56:21,481 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 06:56:21,482 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 06:56:21,482 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:21,482 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/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 [2018-11-10 06:56:21,489 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 06:56:21,489 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-10 06:56:21,506 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-10 06:56:21,506 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 06:56:21,512 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:56:21,577 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-10 06:56:21,578 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 06:56:21,794 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-10 06:56:21,810 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 06:56:21,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 15 [2018-11-10 06:56:21,811 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 06:56:21,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 06:56:21,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 06:56:21,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2018-11-10 06:56:21,812 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 11 states. [2018-11-10 06:56:21,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:56:21,984 INFO L93 Difference]: Finished difference Result 121 states and 177 transitions. [2018-11-10 06:56:21,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-10 06:56:21,985 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2018-11-10 06:56:21,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:56:21,986 INFO L225 Difference]: With dead ends: 121 [2018-11-10 06:56:21,986 INFO L226 Difference]: Without dead ends: 76 [2018-11-10 06:56:21,987 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 92 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2018-11-10 06:56:21,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-11-10 06:56:21,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 59. [2018-11-10 06:56:21,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-11-10 06:56:22,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2018-11-10 06:56:22,000 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 52 [2018-11-10 06:56:22,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:56:22,001 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2018-11-10 06:56:22,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-10 06:56:22,001 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2018-11-10 06:56:22,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-11-10 06:56:22,002 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:56:22,002 INFO L375 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] [2018-11-10 06:56:22,005 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:56:22,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:22,005 INFO L82 PathProgramCache]: Analyzing trace with hash -242988780, now seen corresponding path program 1 times [2018-11-10 06:56:22,005 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:56:22,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:22,006 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 06:56:22,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:22,006 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:56:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:22,050 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-11-10 06:56:22,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:22,050 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:56:22,050 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 56 with the following transitions: [2018-11-10 06:56:22,050 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] [2018-11-10 06:56:22,051 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 06:56:22,051 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 06:56:22,596 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-10 06:56:22,596 INFO L272 AbstractInterpreter]: Visited 29 different actions 1315 times. Merged at 11 different actions 372 times. Widened at 2 different actions 46 times. Found 49 fixpoints after 6 different actions. Largest state had 5 variables. [2018-11-10 06:56:22,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:22,599 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-10 06:56:22,618 INFO L227 lantSequenceWeakener]: Weakened 11 states. On average, predicates are now at 50% of their original sizes. [2018-11-10 06:56:22,618 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-10 06:56:22,683 INFO L415 sIntCurrentIteration]: We unified 54 AI predicates to 54 [2018-11-10 06:56:22,684 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-10 06:56:22,684 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 06:56:22,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 16 [2018-11-10 06:56:22,684 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 06:56:22,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 06:56:22,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 06:56:22,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-11-10 06:56:22,685 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 11 states. [2018-11-10 06:56:23,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:56:23,049 INFO L93 Difference]: Finished difference Result 109 states and 136 transitions. [2018-11-10 06:56:23,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 06:56:23,049 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2018-11-10 06:56:23,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:56:23,050 INFO L225 Difference]: With dead ends: 109 [2018-11-10 06:56:23,050 INFO L226 Difference]: Without dead ends: 68 [2018-11-10 06:56:23,051 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2018-11-10 06:56:23,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-10 06:56:23,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-11-10 06:56:23,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-11-10 06:56:23,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2018-11-10 06:56:23,060 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 55 [2018-11-10 06:56:23,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:56:23,060 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2018-11-10 06:56:23,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-10 06:56:23,061 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2018-11-10 06:56:23,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-10 06:56:23,062 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:56:23,062 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:56:23,062 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:56:23,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:23,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1768644787, now seen corresponding path program 1 times [2018-11-10 06:56:23,063 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:56:23,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:23,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:56:23,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:23,064 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:56:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:23,139 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-11-10 06:56:23,139 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:23,139 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:56:23,139 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 68 with the following transitions: [2018-11-10 06:56:23,139 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] [2018-11-10 06:56:23,140 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 06:56:23,140 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 06:56:26,604 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-10 06:56:26,604 INFO L272 AbstractInterpreter]: Visited 34 different actions 21834 times. Merged at 16 different actions 4065 times. Widened at 4 different actions 328 times. Found 430 fixpoints after 9 different actions. Largest state had 5 variables. [2018-11-10 06:56:26,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:26,613 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-10 06:56:26,613 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:26,613 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/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 [2018-11-10 06:56:26,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:56:26,623 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 06:56:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:26,640 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:56:26,699 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 8 proven. 40 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-11-10 06:56:26,700 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 06:56:27,214 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-11-10 06:56:27,262 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-10 06:56:27,279 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 06:56:27,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 13] total 18 [2018-11-10 06:56:27,280 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 06:56:27,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-10 06:56:27,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-10 06:56:27,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2018-11-10 06:56:27,281 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand 12 states. [2018-11-10 06:56:27,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:56:27,457 INFO L93 Difference]: Finished difference Result 144 states and 218 transitions. [2018-11-10 06:56:27,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-10 06:56:27,458 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2018-11-10 06:56:27,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:56:27,459 INFO L225 Difference]: With dead ends: 144 [2018-11-10 06:56:27,459 INFO L226 Difference]: Without dead ends: 95 [2018-11-10 06:56:27,460 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 117 SyntacticMatches, 11 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2018-11-10 06:56:27,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-11-10 06:56:27,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 70. [2018-11-10 06:56:27,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-11-10 06:56:27,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2018-11-10 06:56:27,470 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 67 [2018-11-10 06:56:27,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:56:27,470 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2018-11-10 06:56:27,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-10 06:56:27,470 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2018-11-10 06:56:27,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-11-10 06:56:27,472 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:56:27,472 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:56:27,472 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:56:27,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:27,473 INFO L82 PathProgramCache]: Analyzing trace with hash 650896746, now seen corresponding path program 1 times [2018-11-10 06:56:27,473 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:56:27,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:27,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:56:27,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:27,476 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:56:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:27,571 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 39 proven. 39 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-11-10 06:56:27,571 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:27,571 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:56:27,571 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 82 with the following transitions: [2018-11-10 06:56:27,571 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] [2018-11-10 06:56:27,572 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 06:56:27,573 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 06:56:27,765 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-10 06:56:27,765 INFO L272 AbstractInterpreter]: Visited 29 different actions 1407 times. Merged at 11 different actions 329 times. Widened at 2 different actions 37 times. Found 41 fixpoints after 5 different actions. Largest state had 5 variables. [2018-11-10 06:56:27,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:27,777 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-10 06:56:27,796 INFO L227 lantSequenceWeakener]: Weakened 19 states. On average, predicates are now at 50% of their original sizes. [2018-11-10 06:56:27,796 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-10 06:56:27,903 INFO L415 sIntCurrentIteration]: We unified 80 AI predicates to 80 [2018-11-10 06:56:27,904 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-10 06:56:27,904 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 06:56:27,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [11] total 26 [2018-11-10 06:56:27,904 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 06:56:27,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-10 06:56:27,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-10 06:56:27,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2018-11-10 06:56:27,905 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand 17 states. [2018-11-10 06:56:28,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:56:28,412 INFO L93 Difference]: Finished difference Result 136 states and 177 transitions. [2018-11-10 06:56:28,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-10 06:56:28,412 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 81 [2018-11-10 06:56:28,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:56:28,413 INFO L225 Difference]: With dead ends: 136 [2018-11-10 06:56:28,413 INFO L226 Difference]: Without dead ends: 88 [2018-11-10 06:56:28,414 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2018-11-10 06:56:28,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-11-10 06:56:28,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-11-10 06:56:28,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-11-10 06:56:28,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 109 transitions. [2018-11-10 06:56:28,424 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 109 transitions. Word has length 81 [2018-11-10 06:56:28,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:56:28,424 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 109 transitions. [2018-11-10 06:56:28,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-10 06:56:28,425 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 109 transitions. [2018-11-10 06:56:28,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-11-10 06:56:28,427 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:56:28,427 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:56:28,427 INFO L424 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:56:28,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:28,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1708632044, now seen corresponding path program 2 times [2018-11-10 06:56:28,427 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:56:28,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:28,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:56:28,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:28,428 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:56:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 68 proven. 48 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2018-11-10 06:56:28,518 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:28,518 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:56:28,518 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 06:56:28,518 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 06:56:28,518 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:28,519 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/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 [2018-11-10 06:56:28,535 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 06:56:28,535 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-10 06:56:28,565 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-10 06:56:28,565 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 06:56:28,568 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:56:28,630 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 67 proven. 15 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2018-11-10 06:56:28,630 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 06:56:28,869 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 67 proven. 16 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-11-10 06:56:28,890 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 06:56:28,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 9] total 20 [2018-11-10 06:56:28,890 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 06:56:28,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-10 06:56:28,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-10 06:56:28,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2018-11-10 06:56:28,891 INFO L87 Difference]: Start difference. First operand 88 states and 109 transitions. Second operand 16 states. [2018-11-10 06:56:29,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:56:29,356 INFO L93 Difference]: Finished difference Result 218 states and 340 transitions. [2018-11-10 06:56:29,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-10 06:56:29,357 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 108 [2018-11-10 06:56:29,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:56:29,359 INFO L225 Difference]: With dead ends: 218 [2018-11-10 06:56:29,359 INFO L226 Difference]: Without dead ends: 147 [2018-11-10 06:56:29,361 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 202 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2018-11-10 06:56:29,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-11-10 06:56:29,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 117. [2018-11-10 06:56:29,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-11-10 06:56:29,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 166 transitions. [2018-11-10 06:56:29,380 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 166 transitions. Word has length 108 [2018-11-10 06:56:29,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:56:29,381 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 166 transitions. [2018-11-10 06:56:29,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-10 06:56:29,381 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 166 transitions. [2018-11-10 06:56:29,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-11-10 06:56:29,383 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:56:29,383 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 10, 10, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:56:29,383 INFO L424 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:56:29,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:29,384 INFO L82 PathProgramCache]: Analyzing trace with hash -360884728, now seen corresponding path program 3 times [2018-11-10 06:56:29,384 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:56:29,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:29,385 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 06:56:29,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:29,387 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:56:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:29,487 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 125 proven. 89 refuted. 0 times theorem prover too weak. 696 trivial. 0 not checked. [2018-11-10 06:56:29,487 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:29,487 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:56:29,488 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 06:56:29,488 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 06:56:29,488 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:29,488 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/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 [2018-11-10 06:56:29,499 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 06:56:29,500 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-10 06:56:29,546 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 06:56:29,546 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 06:56:29,557 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:56:29,719 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 52 proven. 283 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2018-11-10 06:56:29,719 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 06:56:30,702 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 52 proven. 299 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2018-11-10 06:56:30,719 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 06:56:30,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 15] total 21 [2018-11-10 06:56:30,719 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 06:56:30,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-10 06:56:30,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-10 06:56:30,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2018-11-10 06:56:30,720 INFO L87 Difference]: Start difference. First operand 117 states and 166 transitions. Second operand 14 states. [2018-11-10 06:56:30,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:56:30,977 INFO L93 Difference]: Finished difference Result 308 states and 559 transitions. [2018-11-10 06:56:30,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-10 06:56:30,978 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 189 [2018-11-10 06:56:30,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:56:30,980 INFO L225 Difference]: With dead ends: 308 [2018-11-10 06:56:30,980 INFO L226 Difference]: Without dead ends: 187 [2018-11-10 06:56:30,981 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 353 SyntacticMatches, 12 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2018-11-10 06:56:30,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-11-10 06:56:30,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 131. [2018-11-10 06:56:30,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-11-10 06:56:30,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 184 transitions. [2018-11-10 06:56:30,997 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 184 transitions. Word has length 189 [2018-11-10 06:56:30,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:56:30,997 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 184 transitions. [2018-11-10 06:56:30,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-10 06:56:30,997 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 184 transitions. [2018-11-10 06:56:30,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-11-10 06:56:30,999 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:56:30,999 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 12, 10, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:56:30,999 INFO L424 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:56:31,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:31,000 INFO L82 PathProgramCache]: Analyzing trace with hash 481242936, now seen corresponding path program 4 times [2018-11-10 06:56:31,000 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:56:31,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:31,000 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 06:56:31,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:31,001 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:56:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:31,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 101 proven. 212 refuted. 0 times theorem prover too weak. 894 trivial. 0 not checked. [2018-11-10 06:56:31,083 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:31,083 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:56:31,083 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 06:56:31,084 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 06:56:31,084 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:31,084 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/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 [2018-11-10 06:56:31,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:56:31,092 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 06:56:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:31,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:56:31,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 73 proven. 373 refuted. 0 times theorem prover too weak. 761 trivial. 0 not checked. [2018-11-10 06:56:31,271 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 06:56:32,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 73 proven. 397 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2018-11-10 06:56:32,306 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 06:56:32,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 17] total 25 [2018-11-10 06:56:32,306 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 06:56:32,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-10 06:56:32,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-10 06:56:32,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2018-11-10 06:56:32,307 INFO L87 Difference]: Start difference. First operand 131 states and 184 transitions. Second operand 18 states. [2018-11-10 06:56:32,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:56:32,639 INFO L93 Difference]: Finished difference Result 345 states and 635 transitions. [2018-11-10 06:56:32,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-10 06:56:32,639 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 215 [2018-11-10 06:56:32,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:56:32,641 INFO L225 Difference]: With dead ends: 345 [2018-11-10 06:56:32,641 INFO L226 Difference]: Without dead ends: 211 [2018-11-10 06:56:32,643 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 400 SyntacticMatches, 15 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=272, Invalid=1288, Unknown=0, NotChecked=0, Total=1560 [2018-11-10 06:56:32,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-11-10 06:56:32,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 147. [2018-11-10 06:56:32,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-11-10 06:56:32,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 215 transitions. [2018-11-10 06:56:32,658 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 215 transitions. Word has length 215 [2018-11-10 06:56:32,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:56:32,659 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 215 transitions. [2018-11-10 06:56:32,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-10 06:56:32,659 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 215 transitions. [2018-11-10 06:56:32,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-11-10 06:56:32,663 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:56:32,663 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 20, 19, 19, 14, 13, 13, 13, 13, 13, 13, 13, 11, 9, 9, 9, 9, 9, 9, 9, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:56:32,663 INFO L424 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:56:32,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:32,663 INFO L82 PathProgramCache]: Analyzing trace with hash 586994729, now seen corresponding path program 5 times [2018-11-10 06:56:32,663 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:56:32,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:32,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:56:32,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:32,664 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:56:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:32,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2721 backedges. 170 proven. 460 refuted. 0 times theorem prover too weak. 2091 trivial. 0 not checked. [2018-11-10 06:56:32,780 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:32,780 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:56:32,780 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 06:56:32,780 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 06:56:32,780 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:32,780 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/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 [2018-11-10 06:56:32,788 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 06:56:32,788 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-10 06:56:32,805 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-10 06:56:32,806 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 06:56:32,809 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:56:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2721 backedges. 502 proven. 3 refuted. 0 times theorem prover too weak. 2216 trivial. 0 not checked. [2018-11-10 06:56:32,894 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 06:56:33,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2721 backedges. 389 proven. 5 refuted. 0 times theorem prover too weak. 2327 trivial. 0 not checked. [2018-11-10 06:56:33,316 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 06:56:33,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2018-11-10 06:56:33,316 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 06:56:33,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-10 06:56:33,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-10 06:56:33,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2018-11-10 06:56:33,317 INFO L87 Difference]: Start difference. First operand 147 states and 215 transitions. Second operand 16 states. [2018-11-10 06:56:33,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:56:33,537 INFO L93 Difference]: Finished difference Result 267 states and 421 transitions. [2018-11-10 06:56:33,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 06:56:33,538 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 311 [2018-11-10 06:56:33,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:56:33,539 INFO L225 Difference]: With dead ends: 267 [2018-11-10 06:56:33,539 INFO L226 Difference]: Without dead ends: 146 [2018-11-10 06:56:33,540 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 609 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2018-11-10 06:56:33,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-11-10 06:56:33,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 143. [2018-11-10 06:56:33,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-11-10 06:56:33,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 194 transitions. [2018-11-10 06:56:33,552 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 194 transitions. Word has length 311 [2018-11-10 06:56:33,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:56:33,552 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 194 transitions. [2018-11-10 06:56:33,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-10 06:56:33,552 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 194 transitions. [2018-11-10 06:56:33,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-11-10 06:56:33,557 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:56:33,557 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 23, 23, 22, 21, 15, 15, 15, 15, 15, 15, 15, 11, 11, 11, 11, 11, 11, 11, 10, 9, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:56:33,557 INFO L424 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:56:33,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:33,557 INFO L82 PathProgramCache]: Analyzing trace with hash -514135523, now seen corresponding path program 6 times [2018-11-10 06:56:33,557 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:56:33,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:33,558 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 06:56:33,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:33,558 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:56:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:33,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3833 backedges. 231 proven. 692 refuted. 0 times theorem prover too weak. 2910 trivial. 0 not checked. [2018-11-10 06:56:33,806 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:33,806 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:56:33,806 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 06:56:33,806 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 06:56:33,806 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:33,806 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/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 [2018-11-10 06:56:33,815 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 06:56:33,815 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-10 06:56:33,884 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 06:56:33,885 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 06:56:33,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:56:34,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3833 backedges. 233 proven. 687 refuted. 0 times theorem prover too weak. 2913 trivial. 0 not checked. [2018-11-10 06:56:34,055 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 06:56:35,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3833 backedges. 234 proven. 707 refuted. 0 times theorem prover too weak. 2892 trivial. 0 not checked. [2018-11-10 06:56:35,253 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 06:56:35,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 18] total 24 [2018-11-10 06:56:35,253 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 06:56:35,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-10 06:56:35,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-10 06:56:35,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2018-11-10 06:56:35,254 INFO L87 Difference]: Start difference. First operand 143 states and 194 transitions. Second operand 16 states. [2018-11-10 06:56:35,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:56:35,408 INFO L93 Difference]: Finished difference Result 245 states and 430 transitions. [2018-11-10 06:56:35,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-10 06:56:35,409 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 368 [2018-11-10 06:56:35,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:56:35,410 INFO L225 Difference]: With dead ends: 245 [2018-11-10 06:56:35,411 INFO L226 Difference]: Without dead ends: 151 [2018-11-10 06:56:35,412 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 716 SyntacticMatches, 16 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=186, Invalid=684, Unknown=0, NotChecked=0, Total=870 [2018-11-10 06:56:35,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-11-10 06:56:35,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-11-10 06:56:35,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-11-10 06:56:35,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 202 transitions. [2018-11-10 06:56:35,423 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 202 transitions. Word has length 368 [2018-11-10 06:56:35,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:56:35,424 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 202 transitions. [2018-11-10 06:56:35,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-10 06:56:35,424 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 202 transitions. [2018-11-10 06:56:35,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-11-10 06:56:35,429 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:56:35,430 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 23, 23, 21, 19, 13, 13, 13, 13, 13, 13, 13, 11, 11, 11, 11, 11, 11, 11, 8, 8, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:56:35,430 INFO L424 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:56:35,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:35,430 INFO L82 PathProgramCache]: Analyzing trace with hash 916200185, now seen corresponding path program 7 times [2018-11-10 06:56:35,430 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:56:35,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:35,431 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 06:56:35,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:35,431 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:56:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:35,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3225 backedges. 216 proven. 642 refuted. 0 times theorem prover too weak. 2367 trivial. 0 not checked. [2018-11-10 06:56:35,604 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:35,604 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:56:35,604 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 06:56:35,604 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 06:56:35,604 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:35,604 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/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 [2018-11-10 06:56:35,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:56:35,610 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 06:56:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:35,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:56:35,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3225 backedges. 180 proven. 525 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2018-11-10 06:56:35,743 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 06:56:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3225 backedges. 180 proven. 541 refuted. 0 times theorem prover too weak. 2504 trivial. 0 not checked. [2018-11-10 06:56:36,535 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 06:56:36,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 15] total 26 [2018-11-10 06:56:36,535 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 06:56:36,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-10 06:56:36,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-10 06:56:36,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2018-11-10 06:56:36,536 INFO L87 Difference]: Start difference. First operand 151 states and 202 transitions. Second operand 20 states. [2018-11-10 06:56:37,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:56:37,032 INFO L93 Difference]: Finished difference Result 371 states and 609 transitions. [2018-11-10 06:56:37,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-10 06:56:37,032 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 341 [2018-11-10 06:56:37,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:56:37,034 INFO L225 Difference]: With dead ends: 371 [2018-11-10 06:56:37,034 INFO L226 Difference]: Without dead ends: 236 [2018-11-10 06:56:37,035 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 718 GetRequests, 659 SyntacticMatches, 13 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=374, Invalid=1882, Unknown=0, NotChecked=0, Total=2256 [2018-11-10 06:56:37,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-11-10 06:56:37,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 214. [2018-11-10 06:56:37,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-11-10 06:56:37,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 314 transitions. [2018-11-10 06:56:37,048 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 314 transitions. Word has length 341 [2018-11-10 06:56:37,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:56:37,048 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 314 transitions. [2018-11-10 06:56:37,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-10 06:56:37,049 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 314 transitions. [2018-11-10 06:56:37,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2018-11-10 06:56:37,052 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:56:37,052 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 34, 34, 30, 28, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 13, 10, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:56:37,052 INFO L424 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:56:37,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:37,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1016959436, now seen corresponding path program 8 times [2018-11-10 06:56:37,052 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:56:37,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:37,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:56:37,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:37,053 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:56:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:37,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6877 backedges. 552 proven. 550 refuted. 0 times theorem prover too weak. 5775 trivial. 0 not checked. [2018-11-10 06:56:37,226 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:37,226 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:56:37,226 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 06:56:37,226 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 06:56:37,226 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:37,226 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/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 [2018-11-10 06:56:37,233 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 06:56:37,233 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-10 06:56:37,284 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-11-10 06:56:37,285 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 06:56:37,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:56:37,476 INFO L134 CoverageAnalysis]: Checked inductivity of 6877 backedges. 2449 proven. 36 refuted. 0 times theorem prover too weak. 4392 trivial. 0 not checked. [2018-11-10 06:56:37,477 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 06:56:38,424 INFO L134 CoverageAnalysis]: Checked inductivity of 6877 backedges. 962 proven. 165 refuted. 0 times theorem prover too weak. 5750 trivial. 0 not checked. [2018-11-10 06:56:38,441 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 06:56:38,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 25 [2018-11-10 06:56:38,441 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 06:56:38,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-10 06:56:38,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-10 06:56:38,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2018-11-10 06:56:38,442 INFO L87 Difference]: Start difference. First operand 214 states and 314 transitions. Second operand 20 states. [2018-11-10 06:56:38,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:56:38,929 INFO L93 Difference]: Finished difference Result 461 states and 760 transitions. [2018-11-10 06:56:38,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-10 06:56:38,929 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 491 [2018-11-10 06:56:38,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:56:38,931 INFO L225 Difference]: With dead ends: 461 [2018-11-10 06:56:38,931 INFO L226 Difference]: Without dead ends: 274 [2018-11-10 06:56:38,932 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1014 GetRequests, 960 SyntacticMatches, 11 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=335, Invalid=1645, Unknown=0, NotChecked=0, Total=1980 [2018-11-10 06:56:38,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-11-10 06:56:38,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 240. [2018-11-10 06:56:38,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-11-10 06:56:38,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 364 transitions. [2018-11-10 06:56:38,950 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 364 transitions. Word has length 491 [2018-11-10 06:56:38,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:56:38,950 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 364 transitions. [2018-11-10 06:56:38,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-10 06:56:38,950 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 364 transitions. [2018-11-10 06:56:38,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2018-11-10 06:56:38,953 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:56:38,953 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 24, 24, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 9, 9, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:56:38,954 INFO L424 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:56:38,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:38,954 INFO L82 PathProgramCache]: Analyzing trace with hash -2023084067, now seen corresponding path program 9 times [2018-11-10 06:56:38,954 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:56:38,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:38,955 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 06:56:38,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:38,955 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:56:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:39,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4992 backedges. 446 proven. 492 refuted. 0 times theorem prover too weak. 4054 trivial. 0 not checked. [2018-11-10 06:56:39,102 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:39,102 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:56:39,102 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 06:56:39,102 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 06:56:39,102 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:39,102 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/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 [2018-11-10 06:56:39,109 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 06:56:39,109 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-10 06:56:39,161 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 06:56:39,161 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 06:56:39,166 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:56:39,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4992 backedges. 427 proven. 654 refuted. 0 times theorem prover too weak. 3911 trivial. 0 not checked. [2018-11-10 06:56:39,308 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 06:56:40,550 INFO L134 CoverageAnalysis]: Checked inductivity of 4992 backedges. 426 proven. 676 refuted. 0 times theorem prover too weak. 3890 trivial. 0 not checked. [2018-11-10 06:56:40,566 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 06:56:40,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 18] total 29 [2018-11-10 06:56:40,567 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 06:56:40,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-10 06:56:40,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-10 06:56:40,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2018-11-10 06:56:40,568 INFO L87 Difference]: Start difference. First operand 240 states and 364 transitions. Second operand 21 states. [2018-11-10 06:56:41,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:56:41,087 INFO L93 Difference]: Finished difference Result 504 states and 890 transitions. [2018-11-10 06:56:41,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-10 06:56:41,088 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 421 [2018-11-10 06:56:41,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:56:41,091 INFO L225 Difference]: With dead ends: 504 [2018-11-10 06:56:41,091 INFO L226 Difference]: Without dead ends: 249 [2018-11-10 06:56:41,095 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 868 GetRequests, 809 SyntacticMatches, 16 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=340, Invalid=1640, Unknown=0, NotChecked=0, Total=1980 [2018-11-10 06:56:41,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-11-10 06:56:41,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 243. [2018-11-10 06:56:41,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-11-10 06:56:41,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 361 transitions. [2018-11-10 06:56:41,115 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 361 transitions. Word has length 421 [2018-11-10 06:56:41,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:56:41,115 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 361 transitions. [2018-11-10 06:56:41,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-10 06:56:41,116 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 361 transitions. [2018-11-10 06:56:41,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2018-11-10 06:56:41,120 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:56:41,120 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 40, 40, 39, 35, 27, 27, 27, 27, 27, 27, 27, 20, 20, 20, 20, 20, 20, 20, 19, 16, 8, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:56:41,120 INFO L424 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:56:41,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:41,120 INFO L82 PathProgramCache]: Analyzing trace with hash 80412294, now seen corresponding path program 10 times [2018-11-10 06:56:41,121 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:56:41,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:41,121 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 06:56:41,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:41,121 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:56:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:41,357 INFO L134 CoverageAnalysis]: Checked inductivity of 12560 backedges. 455 proven. 960 refuted. 0 times theorem prover too weak. 11145 trivial. 0 not checked. [2018-11-10 06:56:41,358 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:41,358 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:56:41,358 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 06:56:41,358 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 06:56:41,358 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:41,358 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/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 [2018-11-10 06:56:41,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:56:41,367 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 06:56:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:41,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:56:41,747 INFO L134 CoverageAnalysis]: Checked inductivity of 12560 backedges. 422 proven. 1107 refuted. 0 times theorem prover too weak. 11031 trivial. 0 not checked. [2018-11-10 06:56:41,747 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 06:56:43,027 INFO L134 CoverageAnalysis]: Checked inductivity of 12560 backedges. 424 proven. 1121 refuted. 0 times theorem prover too weak. 11015 trivial. 0 not checked. [2018-11-10 06:56:43,044 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 06:56:43,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 16] total 27 [2018-11-10 06:56:43,045 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 06:56:43,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-10 06:56:43,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-10 06:56:43,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2018-11-10 06:56:43,046 INFO L87 Difference]: Start difference. First operand 243 states and 361 transitions. Second operand 20 states. [2018-11-10 06:56:43,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:56:43,315 INFO L93 Difference]: Finished difference Result 447 states and 715 transitions. [2018-11-10 06:56:43,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-10 06:56:43,316 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 651 [2018-11-10 06:56:43,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:56:43,317 INFO L225 Difference]: With dead ends: 447 [2018-11-10 06:56:43,318 INFO L226 Difference]: Without dead ends: 228 [2018-11-10 06:56:43,320 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1324 GetRequests, 1273 SyntacticMatches, 14 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=250, Invalid=1232, Unknown=0, NotChecked=0, Total=1482 [2018-11-10 06:56:43,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-11-10 06:56:43,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 224. [2018-11-10 06:56:43,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-11-10 06:56:43,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 314 transitions. [2018-11-10 06:56:43,331 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 314 transitions. Word has length 651 [2018-11-10 06:56:43,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:56:43,332 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 314 transitions. [2018-11-10 06:56:43,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-10 06:56:43,332 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 314 transitions. [2018-11-10 06:56:43,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2018-11-10 06:56:43,334 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:56:43,335 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 42, 42, 37, 36, 24, 24, 24, 24, 24, 24, 24, 21, 21, 21, 21, 21, 21, 21, 16, 12, 12, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:56:43,335 INFO L424 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:56:43,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:43,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1284447216, now seen corresponding path program 11 times [2018-11-10 06:56:43,335 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:56:43,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:43,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:56:43,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:43,336 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:56:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:43,546 INFO L134 CoverageAnalysis]: Checked inductivity of 11388 backedges. 1138 proven. 562 refuted. 0 times theorem prover too weak. 9688 trivial. 0 not checked. [2018-11-10 06:56:43,546 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:43,547 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:56:43,547 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 06:56:43,547 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 06:56:43,547 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:43,547 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/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 [2018-11-10 06:56:43,565 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 06:56:43,565 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-10 06:56:43,621 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-11-10 06:56:43,622 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 06:56:43,626 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:56:43,806 INFO L134 CoverageAnalysis]: Checked inductivity of 11388 backedges. 1619 proven. 56 refuted. 0 times theorem prover too weak. 9713 trivial. 0 not checked. [2018-11-10 06:56:43,806 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 06:56:44,929 INFO L134 CoverageAnalysis]: Checked inductivity of 11388 backedges. 1619 proven. 61 refuted. 0 times theorem prover too weak. 9708 trivial. 0 not checked. [2018-11-10 06:56:44,944 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 06:56:44,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 15] total 31 [2018-11-10 06:56:44,945 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 06:56:44,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-10 06:56:44,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-10 06:56:44,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2018-11-10 06:56:44,946 INFO L87 Difference]: Start difference. First operand 224 states and 314 transitions. Second operand 23 states. [2018-11-10 06:56:45,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:56:45,370 INFO L93 Difference]: Finished difference Result 400 states and 587 transitions. [2018-11-10 06:56:45,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-10 06:56:45,371 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 626 [2018-11-10 06:56:45,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:56:45,372 INFO L225 Difference]: With dead ends: 400 [2018-11-10 06:56:45,372 INFO L226 Difference]: Without dead ends: 209 [2018-11-10 06:56:45,374 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1286 GetRequests, 1230 SyntacticMatches, 11 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=340, Invalid=1822, Unknown=0, NotChecked=0, Total=2162 [2018-11-10 06:56:45,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-11-10 06:56:45,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 192. [2018-11-10 06:56:45,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-11-10 06:56:45,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 248 transitions. [2018-11-10 06:56:45,388 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 248 transitions. Word has length 626 [2018-11-10 06:56:45,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:56:45,389 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 248 transitions. [2018-11-10 06:56:45,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-10 06:56:45,389 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 248 transitions. [2018-11-10 06:56:45,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2018-11-10 06:56:45,392 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:56:45,393 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 26, 26, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 10, 10, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:56:45,393 INFO L424 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:56:45,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:45,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1690753701, now seen corresponding path program 12 times [2018-11-10 06:56:45,393 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:56:45,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:45,394 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 06:56:45,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:45,394 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:56:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:45,599 INFO L134 CoverageAnalysis]: Checked inductivity of 5706 backedges. 592 proven. 480 refuted. 0 times theorem prover too weak. 4634 trivial. 0 not checked. [2018-11-10 06:56:45,599 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:45,599 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:56:45,599 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 06:56:45,600 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 06:56:45,600 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:45,600 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/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 [2018-11-10 06:56:45,608 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 06:56:45,608 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-10 06:56:45,660 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 06:56:45,660 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 06:56:45,665 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:56:45,798 INFO L134 CoverageAnalysis]: Checked inductivity of 5706 backedges. 394 proven. 411 refuted. 0 times theorem prover too weak. 4901 trivial. 0 not checked. [2018-11-10 06:56:45,798 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 06:56:46,508 INFO L134 CoverageAnalysis]: Checked inductivity of 5706 backedges. 396 proven. 419 refuted. 0 times theorem prover too weak. 4891 trivial. 0 not checked. [2018-11-10 06:56:46,524 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 06:56:46,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 13] total 24 [2018-11-10 06:56:46,525 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 06:56:46,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-10 06:56:46,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-10 06:56:46,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2018-11-10 06:56:46,526 INFO L87 Difference]: Start difference. First operand 192 states and 248 transitions. Second operand 19 states. [2018-11-10 06:56:46,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:56:46,959 INFO L93 Difference]: Finished difference Result 417 states and 572 transitions. [2018-11-10 06:56:46,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-10 06:56:46,959 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 449 [2018-11-10 06:56:46,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:56:46,961 INFO L225 Difference]: With dead ends: 417 [2018-11-10 06:56:46,961 INFO L226 Difference]: Without dead ends: 228 [2018-11-10 06:56:46,962 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 933 GetRequests, 879 SyntacticMatches, 11 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=326, Invalid=1654, Unknown=0, NotChecked=0, Total=1980 [2018-11-10 06:56:46,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-11-10 06:56:46,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 192. [2018-11-10 06:56:46,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-11-10 06:56:46,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 241 transitions. [2018-11-10 06:56:46,976 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 241 transitions. Word has length 449 [2018-11-10 06:56:46,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:56:46,976 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 241 transitions. [2018-11-10 06:56:46,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-10 06:56:46,976 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 241 transitions. [2018-11-10 06:56:46,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2018-11-10 06:56:46,980 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:56:46,981 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 23, 23, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 9, 9, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:56:46,981 INFO L424 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:56:46,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:46,981 INFO L82 PathProgramCache]: Analyzing trace with hash 634662915, now seen corresponding path program 13 times [2018-11-10 06:56:46,981 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:56:46,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:46,982 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 06:56:46,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:46,982 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:56:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:47,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 547 proven. 151 refuted. 0 times theorem prover too weak. 3672 trivial. 0 not checked. [2018-11-10 06:56:47,131 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:47,132 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:56:47,132 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 06:56:47,132 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 06:56:47,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:47,132 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/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 [2018-11-10 06:56:47,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:56:47,143 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 06:56:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:47,225 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:56:47,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 655 proven. 176 refuted. 0 times theorem prover too weak. 3539 trivial. 0 not checked. [2018-11-10 06:56:47,324 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 06:56:48,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 659 proven. 188 refuted. 0 times theorem prover too weak. 3523 trivial. 0 not checked. [2018-11-10 06:56:48,135 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 06:56:48,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 15] total 18 [2018-11-10 06:56:48,135 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 06:56:48,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-10 06:56:48,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-10 06:56:48,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2018-11-10 06:56:48,136 INFO L87 Difference]: Start difference. First operand 192 states and 241 transitions. Second operand 12 states. [2018-11-10 06:56:48,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:56:48,236 INFO L93 Difference]: Finished difference Result 199 states and 247 transitions. [2018-11-10 06:56:48,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-10 06:56:48,236 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 395 [2018-11-10 06:56:48,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:56:48,237 INFO L225 Difference]: With dead ends: 199 [2018-11-10 06:56:48,237 INFO L226 Difference]: Without dead ends: 192 [2018-11-10 06:56:48,238 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 809 GetRequests, 773 SyntacticMatches, 13 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2018-11-10 06:56:48,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-11-10 06:56:48,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-11-10 06:56:48,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-11-10 06:56:48,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 240 transitions. [2018-11-10 06:56:48,251 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 240 transitions. Word has length 395 [2018-11-10 06:56:48,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:56:48,252 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 240 transitions. [2018-11-10 06:56:48,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-10 06:56:48,252 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 240 transitions. [2018-11-10 06:56:48,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2018-11-10 06:56:48,254 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:56:48,254 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 26, 25, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 11, 9, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:56:48,255 INFO L424 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:56:48,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:48,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1740376526, now seen corresponding path program 14 times [2018-11-10 06:56:48,255 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:56:48,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:48,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:56:48,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:48,256 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:56:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:48,504 INFO L134 CoverageAnalysis]: Checked inductivity of 5369 backedges. 1090 proven. 156 refuted. 0 times theorem prover too weak. 4123 trivial. 0 not checked. [2018-11-10 06:56:48,504 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:48,504 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:56:48,504 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 06:56:48,504 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 06:56:48,504 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:48,504 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/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 [2018-11-10 06:56:48,512 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 06:56:48,512 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-10 06:56:48,557 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-11-10 06:56:48,557 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 06:56:48,583 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:56:48,668 INFO L134 CoverageAnalysis]: Checked inductivity of 5369 backedges. 663 proven. 113 refuted. 0 times theorem prover too weak. 4593 trivial. 0 not checked. [2018-11-10 06:56:48,668 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 06:56:49,320 INFO L134 CoverageAnalysis]: Checked inductivity of 5369 backedges. 667 proven. 119 refuted. 0 times theorem prover too weak. 4583 trivial. 0 not checked. [2018-11-10 06:56:49,336 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 06:56:49,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10, 13] total 25 [2018-11-10 06:56:49,336 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 06:56:49,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-10 06:56:49,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-10 06:56:49,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2018-11-10 06:56:49,337 INFO L87 Difference]: Start difference. First operand 192 states and 240 transitions. Second operand 20 states. [2018-11-10 06:56:49,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:56:49,760 INFO L93 Difference]: Finished difference Result 236 states and 295 transitions. [2018-11-10 06:56:49,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-10 06:56:49,761 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 436 [2018-11-10 06:56:49,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:56:49,762 INFO L225 Difference]: With dead ends: 236 [2018-11-10 06:56:49,762 INFO L226 Difference]: Without dead ends: 226 [2018-11-10 06:56:49,762 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 912 GetRequests, 856 SyntacticMatches, 11 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=345, Invalid=1817, Unknown=0, NotChecked=0, Total=2162 [2018-11-10 06:56:49,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-11-10 06:56:49,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 196. [2018-11-10 06:56:49,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-11-10 06:56:49,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 244 transitions. [2018-11-10 06:56:49,771 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 244 transitions. Word has length 436 [2018-11-10 06:56:49,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:56:49,771 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 244 transitions. [2018-11-10 06:56:49,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-10 06:56:49,771 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 244 transitions. [2018-11-10 06:56:49,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2018-11-10 06:56:49,773 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:56:49,773 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 35, 35, 30, 29, 19, 19, 19, 19, 19, 19, 19, 17, 17, 17, 17, 17, 17, 17, 13, 10, 8, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:56:49,774 INFO L424 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:56:49,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:49,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1638954211, now seen corresponding path program 15 times [2018-11-10 06:56:49,774 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:56:49,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:49,775 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 06:56:49,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:49,775 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:56:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:50,011 INFO L134 CoverageAnalysis]: Checked inductivity of 7261 backedges. 1313 proven. 334 refuted. 0 times theorem prover too weak. 5614 trivial. 0 not checked. [2018-11-10 06:56:50,011 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:50,011 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:56:50,011 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 06:56:50,011 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 06:56:50,011 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:50,011 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/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 [2018-11-10 06:56:50,021 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 06:56:50,021 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-10 06:56:50,082 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 06:56:50,083 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 06:56:50,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:56:50,290 INFO L134 CoverageAnalysis]: Checked inductivity of 7261 backedges. 948 proven. 208 refuted. 0 times theorem prover too weak. 6105 trivial. 0 not checked. [2018-11-10 06:56:50,290 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 06:56:51,425 INFO L134 CoverageAnalysis]: Checked inductivity of 7261 backedges. 946 proven. 224 refuted. 0 times theorem prover too weak. 6091 trivial. 0 not checked. [2018-11-10 06:56:51,441 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 06:56:51,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 16] total 29 [2018-11-10 06:56:51,441 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 06:56:51,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-10 06:56:51,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-10 06:56:51,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812 [2018-11-10 06:56:51,442 INFO L87 Difference]: Start difference. First operand 196 states and 244 transitions. Second operand 22 states. [2018-11-10 06:56:51,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:56:51,853 INFO L93 Difference]: Finished difference Result 341 states and 434 transitions. [2018-11-10 06:56:51,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-10 06:56:51,853 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 504 [2018-11-10 06:56:51,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:56:51,855 INFO L225 Difference]: With dead ends: 341 [2018-11-10 06:56:51,855 INFO L226 Difference]: Without dead ends: 207 [2018-11-10 06:56:51,856 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1048 GetRequests, 987 SyntacticMatches, 14 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=388, Invalid=1964, Unknown=0, NotChecked=0, Total=2352 [2018-11-10 06:56:51,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-11-10 06:56:51,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 194. [2018-11-10 06:56:51,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-11-10 06:56:51,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 237 transitions. [2018-11-10 06:56:51,870 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 237 transitions. Word has length 504 [2018-11-10 06:56:51,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:56:51,871 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 237 transitions. [2018-11-10 06:56:51,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-10 06:56:51,871 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 237 transitions. [2018-11-10 06:56:51,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2018-11-10 06:56:51,873 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:56:51,873 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 26, 25, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 10, 10, 7, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:56:51,873 INFO L424 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:56:51,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:51,873 INFO L82 PathProgramCache]: Analyzing trace with hash 400039386, now seen corresponding path program 16 times [2018-11-10 06:56:51,873 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:56:51,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:51,874 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 06:56:51,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:51,874 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:56:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:52,112 INFO L134 CoverageAnalysis]: Checked inductivity of 5369 backedges. 306 proven. 1049 refuted. 0 times theorem prover too weak. 4014 trivial. 0 not checked. [2018-11-10 06:56:52,112 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:52,112 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:56:52,112 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 06:56:52,112 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 06:56:52,112 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:52,113 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/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 [2018-11-10 06:56:52,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:56:52,122 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 06:56:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:52,217 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:56:52,306 INFO L134 CoverageAnalysis]: Checked inductivity of 5369 backedges. 271 proven. 661 refuted. 0 times theorem prover too weak. 4437 trivial. 0 not checked. [2018-11-10 06:56:52,306 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 06:56:53,122 INFO L134 CoverageAnalysis]: Checked inductivity of 5369 backedges. 273 proven. 675 refuted. 0 times theorem prover too weak. 4421 trivial. 0 not checked. [2018-11-10 06:56:53,138 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 06:56:53,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 15] total 27 [2018-11-10 06:56:53,138 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 06:56:53,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-10 06:56:53,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-10 06:56:53,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2018-11-10 06:56:53,139 INFO L87 Difference]: Start difference. First operand 194 states and 237 transitions. Second operand 21 states. [2018-11-10 06:56:53,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:56:53,602 INFO L93 Difference]: Finished difference Result 350 states and 432 transitions. [2018-11-10 06:56:53,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-10 06:56:53,602 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 436 [2018-11-10 06:56:53,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:56:53,604 INFO L225 Difference]: With dead ends: 350 [2018-11-10 06:56:53,604 INFO L226 Difference]: Without dead ends: 205 [2018-11-10 06:56:53,605 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 852 SyntacticMatches, 13 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=422, Invalid=2230, Unknown=0, NotChecked=0, Total=2652 [2018-11-10 06:56:53,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-11-10 06:56:53,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 198. [2018-11-10 06:56:53,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-11-10 06:56:53,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 237 transitions. [2018-11-10 06:56:53,619 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 237 transitions. Word has length 436 [2018-11-10 06:56:53,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:56:53,619 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 237 transitions. [2018-11-10 06:56:53,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-10 06:56:53,619 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 237 transitions. [2018-11-10 06:56:53,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2018-11-10 06:56:53,621 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:56:53,621 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 27, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:56:53,622 INFO L424 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:56:53,622 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:53,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1326629730, now seen corresponding path program 17 times [2018-11-10 06:56:53,622 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:56:53,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:53,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:56:53,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:53,623 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:56:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:54,361 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2018-11-10 06:56:54,362 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:54,362 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:56:54,362 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 06:56:54,362 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 06:56:54,362 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:54,362 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/bin-2019/utaipan/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 06:56:54,368 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 06:56:54,368 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-10 06:56:54,473 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2018-11-10 06:56:54,473 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 06:56:54,480 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:56:55,154 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2018-11-10 06:56:55,154 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 06:56:57,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2018-11-10 06:56:57,564 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 06:56:57,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 52 [2018-11-10 06:56:57,564 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 06:56:57,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-11-10 06:56:57,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-11-10 06:56:57,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2018-11-10 06:56:57,565 INFO L87 Difference]: Start difference. First operand 198 states and 237 transitions. Second operand 52 states. [2018-11-10 06:56:58,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:56:58,003 INFO L93 Difference]: Finished difference Result 232 states and 276 transitions. [2018-11-10 06:56:58,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-11-10 06:56:58,003 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 463 [2018-11-10 06:56:58,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:56:58,005 INFO L225 Difference]: With dead ends: 232 [2018-11-10 06:56:58,005 INFO L226 Difference]: Without dead ends: 220 [2018-11-10 06:56:58,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1062 GetRequests, 942 SyntacticMatches, 70 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2018-11-10 06:56:58,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-11-10 06:56:58,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 211. [2018-11-10 06:56:58,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-11-10 06:56:58,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 252 transitions. [2018-11-10 06:56:58,016 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 252 transitions. Word has length 463 [2018-11-10 06:56:58,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:56:58,016 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 252 transitions. [2018-11-10 06:56:58,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-11-10 06:56:58,016 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 252 transitions. [2018-11-10 06:56:58,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2018-11-10 06:56:58,019 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:56:58,019 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 29, 28, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 11, 11, 8, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:56:58,020 INFO L424 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:56:58,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:56:58,020 INFO L82 PathProgramCache]: Analyzing trace with hash -656328782, now seen corresponding path program 18 times [2018-11-10 06:56:58,020 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:56:58,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:58,021 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 06:56:58,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:56:58,021 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:56:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:56:58,212 INFO L134 CoverageAnalysis]: Checked inductivity of 6840 backedges. 341 proven. 1131 refuted. 0 times theorem prover too weak. 5368 trivial. 0 not checked. [2018-11-10 06:56:58,213 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:58,213 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:56:58,213 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 06:56:58,213 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 06:56:58,213 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:56:58,213 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/bin-2019/utaipan/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 06:56:58,223 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 06:56:58,223 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-10 06:56:58,286 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 06:56:58,286 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 06:56:58,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:56:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6840 backedges. 334 proven. 953 refuted. 0 times theorem prover too weak. 5553 trivial. 0 not checked. [2018-11-10 06:56:58,490 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 06:56:59,913 INFO L134 CoverageAnalysis]: Checked inductivity of 6840 backedges. 333 proven. 975 refuted. 0 times theorem prover too weak. 5532 trivial. 0 not checked. [2018-11-10 06:56:59,930 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 06:56:59,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 18] total 30 [2018-11-10 06:56:59,930 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 06:56:59,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-10 06:56:59,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-10 06:56:59,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2018-11-10 06:56:59,931 INFO L87 Difference]: Start difference. First operand 211 states and 252 transitions. Second operand 22 states. [2018-11-10 06:57:00,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:57:00,313 INFO L93 Difference]: Finished difference Result 374 states and 453 transitions. [2018-11-10 06:57:00,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-10 06:57:00,313 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 490 [2018-11-10 06:57:00,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:57:00,314 INFO L225 Difference]: With dead ends: 374 [2018-11-10 06:57:00,315 INFO L226 Difference]: Without dead ends: 210 [2018-11-10 06:57:00,315 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1013 GetRequests, 952 SyntacticMatches, 16 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=366, Invalid=1796, Unknown=0, NotChecked=0, Total=2162 [2018-11-10 06:57:00,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-11-10 06:57:00,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 196. [2018-11-10 06:57:00,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-11-10 06:57:00,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 227 transitions. [2018-11-10 06:57:00,324 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 227 transitions. Word has length 490 [2018-11-10 06:57:00,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:57:00,325 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 227 transitions. [2018-11-10 06:57:00,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-10 06:57:00,325 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 227 transitions. [2018-11-10 06:57:00,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2018-11-10 06:57:00,327 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:57:00,327 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 31, 31, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 12, 12, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:57:00,327 INFO L424 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:57:00,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:57:00,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1726451101, now seen corresponding path program 19 times [2018-11-10 06:57:00,328 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:57:00,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:57:00,328 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 06:57:00,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:57:00,329 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:57:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:57:00,560 INFO L134 CoverageAnalysis]: Checked inductivity of 8074 backedges. 608 proven. 1515 refuted. 0 times theorem prover too weak. 5951 trivial. 0 not checked. [2018-11-10 06:57:00,560 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:57:00,560 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:57:00,561 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 06:57:00,561 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 06:57:00,561 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:57:00,561 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/bin-2019/utaipan/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 06:57:00,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:57:00,567 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 06:57:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:57:00,650 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:57:00,792 INFO L134 CoverageAnalysis]: Checked inductivity of 8074 backedges. 621 proven. 789 refuted. 0 times theorem prover too weak. 6664 trivial. 0 not checked. [2018-11-10 06:57:00,792 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 06:57:02,271 INFO L134 CoverageAnalysis]: Checked inductivity of 8074 backedges. 618 proven. 813 refuted. 0 times theorem prover too weak. 6643 trivial. 0 not checked. [2018-11-10 06:57:02,287 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 06:57:02,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 18] total 32 [2018-11-10 06:57:02,288 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 06:57:02,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-10 06:57:02,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-10 06:57:02,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=860, Unknown=0, NotChecked=0, Total=992 [2018-11-10 06:57:02,289 INFO L87 Difference]: Start difference. First operand 196 states and 227 transitions. Second operand 24 states. [2018-11-10 06:57:02,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:57:02,688 INFO L93 Difference]: Finished difference Result 292 states and 349 transitions. [2018-11-10 06:57:02,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-10 06:57:02,689 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 531 [2018-11-10 06:57:02,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:57:02,689 INFO L225 Difference]: With dead ends: 292 [2018-11-10 06:57:02,689 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 06:57:02,690 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1108 GetRequests, 1040 SyntacticMatches, 16 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=451, Invalid=2411, Unknown=0, NotChecked=0, Total=2862 [2018-11-10 06:57:02,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 06:57:02,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 06:57:02,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 06:57:02,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 06:57:02,691 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 531 [2018-11-10 06:57:02,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:57:02,691 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 06:57:02,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-10 06:57:02,691 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 06:57:02,691 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 06:57:02,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 06:57:02,838 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:02,875 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:02,876 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:02,880 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:02,881 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:02,894 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:02,895 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:02,951 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:02,952 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:02,953 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:02,961 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:02,974 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:02,975 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:02,980 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:02,983 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:02,986 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:02,991 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:02,994 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:02,997 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,000 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,004 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,015 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,023 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,031 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,039 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,044 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,050 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,052 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,062 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,065 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,069 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,078 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,084 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,085 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,087 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,096 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,101 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,110 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,113 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,116 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,119 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,122 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,135 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,136 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,137 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,155 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,161 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,164 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,168 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,172 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,187 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,189 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,201 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,206 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,221 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,228 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,233 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,234 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,239 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,244 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,251 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,261 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,269 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,274 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,285 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,288 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,293 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,301 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,308 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,313 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,316 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,320 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,324 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,329 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,336 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,345 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,357 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,362 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,362 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,366 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,371 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,374 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,377 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,381 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,386 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,391 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,394 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,398 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,401 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,413 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,417 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,423 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,426 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,429 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,430 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,432 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,437 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,442 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,446 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,460 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,465 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,469 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,471 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,474 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,478 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,487 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,490 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,491 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,494 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,500 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,501 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,503 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,507 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,508 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,511 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,522 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,533 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,538 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,541 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,544 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,550 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,552 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,556 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,565 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,567 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,575 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,578 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,581 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,584 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,587 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,592 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,595 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,599 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,603 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,615 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,616 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,619 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,622 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,625 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,630 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,633 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,635 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,637 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,641 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,645 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,646 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,649 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,651 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,656 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,661 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,662 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,664 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,670 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,676 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,681 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,684 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,687 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,690 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,692 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,699 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,703 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,705 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,708 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,712 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,718 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,723 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,724 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,726 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,733 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,734 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,735 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,742 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,747 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,748 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,749 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,756 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,764 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,765 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,768 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,773 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,776 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,780 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,784 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,785 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,792 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,800 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,803 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,808 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,815 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,822 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,832 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,846 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,850 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,854 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,860 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,868 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,873 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,874 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,876 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,882 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,887 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,890 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,891 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,916 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,926 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,930 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,938 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,941 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,949 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,949 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,961 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,966 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,971 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,972 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,975 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,983 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,988 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,989 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,992 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,996 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:03,999 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,005 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,011 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,014 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,017 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,021 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,024 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,028 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,031 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,037 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,040 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,047 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,052 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,059 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,069 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,073 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,080 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,085 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,088 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,092 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,095 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,097 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,100 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,103 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,107 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,109 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,111 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,116 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,121 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,124 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,127 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,131 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,134 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,138 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,141 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,144 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,148 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,151 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,154 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,162 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,166 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,170 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,179 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,185 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,188 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,191 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,193 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,197 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,198 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,199 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,208 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,214 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,217 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,219 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,224 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,228 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,231 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,234 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,237 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,238 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,240 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,244 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,255 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,260 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,261 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,264 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,274 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,276 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,277 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,278 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,282 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,287 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,290 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,294 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,297 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,303 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,306 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,310 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,313 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,318 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,320 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,323 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,327 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,332 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,333 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,338 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,344 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,347 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,350 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,352 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,355 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,358 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,361 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,364 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,367 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,370 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,374 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,377 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,381 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,386 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,389 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,393 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,397 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,401 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,408 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,412 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,413 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,415 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,422 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,426 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,432 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,437 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,441 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,446 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,448 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,449 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,452 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,461 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,462 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,487 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,489 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,505 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,506 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,523 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,523 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,586 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,592 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,594 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,608 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,609 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,632 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,633 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,643 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,652 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,660 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,661 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,674 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,674 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,682 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,682 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,691 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,692 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,698 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,699 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,705 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,706 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,713 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,714 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,726 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,738 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,745 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,747 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,752 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,753 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,760 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,761 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,768 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,768 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,778 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,779 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,784 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,784 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,797 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,798 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,806 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,807 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,816 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,817 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,824 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,824 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,834 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,835 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,843 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,848 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,849 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,854 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,855 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,870 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,871 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,883 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,883 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,901 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,901 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,908 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,908 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,931 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,931 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,941 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,942 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,948 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,949 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,957 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,957 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,964 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,965 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,971 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,972 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,979 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,980 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,993 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:04,994 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,000 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,001 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,018 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,018 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,024 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,025 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,036 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,036 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,046 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,046 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,055 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,056 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,060 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,061 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,072 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,072 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,083 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,084 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,091 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,091 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,095 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,096 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,102 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,102 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,107 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,108 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,115 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,115 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,122 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,123 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,129 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,130 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,136 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,136 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,142 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,143 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,153 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,153 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,160 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,164 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,164 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,175 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,175 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,179 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,183 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,184 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,199 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,200 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,205 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,205 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,209 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,209 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,213 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,213 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,227 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,232 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,232 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,236 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,236 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,244 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,244 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,251 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,252 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,259 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,260 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,265 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,266 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,275 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,280 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,281 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,284 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,284 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,288 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,288 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,294 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,294 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,303 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,308 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,309 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,313 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,313 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,321 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,325 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,325 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,328 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,329 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,333 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,336 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,339 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,339 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,342 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,342 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,345 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,346 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,350 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,350 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,354 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,355 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,358 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,359 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,363 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,363 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,375 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,381 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,381 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,385 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,386 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,392 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,392 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,396 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,396 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,401 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,401 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,405 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,405 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,409 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,409 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,414 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,414 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,418 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,419 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,422 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,422 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,426 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,426 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,434 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,435 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,438 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,438 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:57:05,576 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 7 [2018-11-10 06:57:06,121 WARN L179 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 45 [2018-11-10 06:57:06,260 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 8 [2018-11-10 06:57:06,786 WARN L179 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 39 [2018-11-10 06:57:06,787 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 06:57:06,787 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 06:57:06,787 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 06:57:06,787 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 06:57:06,787 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 06:57:06,788 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 06:57:06,788 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 35 42) the Hoare annotation is: true [2018-11-10 06:57:06,788 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2018-11-10 06:57:06,788 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 35 42) no Hoare annotation was computed. [2018-11-10 06:57:06,788 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 35 42) no Hoare annotation was computed. [2018-11-10 06:57:06,788 INFO L425 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2018-11-10 06:57:06,788 INFO L425 ceAbstractionStarter]: For program point L38(lines 38 40) no Hoare annotation was computed. [2018-11-10 06:57:06,788 INFO L421 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: (and (<= main_~x~0 8) (<= 16 (* 2 main_~x~0))) [2018-11-10 06:57:06,788 INFO L425 ceAbstractionStarter]: For program point L37-1(line 37) no Hoare annotation was computed. [2018-11-10 06:57:06,788 INFO L425 ceAbstractionStarter]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2018-11-10 06:57:06,788 INFO L428 ceAbstractionStarter]: At program point fibo2ENTRY(lines 17 25) the Hoare annotation is: true [2018-11-10 06:57:06,789 INFO L421 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (and (<= fibo2_~n |fibo2_#in~n|) (<= 2 fibo2_~n) (<= |fibo2_#in~n| fibo2_~n)) [2018-11-10 06:57:06,789 INFO L425 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-11-10 06:57:06,789 INFO L421 ceAbstractionStarter]: At program point L23-2(line 23) the Hoare annotation is: (and (<= fibo2_~n |fibo2_#in~n|) (or (and (<= |fibo2_#in~n| 4) (<= |fibo2_#t~ret2| 2) (<= 2 |fibo2_#t~ret2|)) (<= 6 |fibo2_#in~n|) (<= fibo2_~n 3) (and (<= |fibo2_#t~ret2| 3) (<= 5 |fibo2_#in~n|) (<= 3 |fibo2_#t~ret2|))) (<= 2 fibo2_~n) (or (and (<= 1 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 1)) (< 3 |fibo2_#in~n|)) (<= |fibo2_#in~n| fibo2_~n) (or (and (<= |fibo2_#t~ret2| 8) (<= 8 |fibo2_#t~ret2|)) (not (= |fibo2_#in~n| 7))) (or (and (<= 5 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 5)) (<= |fibo2_#in~n| 5) (<= 7 |fibo2_#in~n|))) [2018-11-10 06:57:06,789 INFO L425 ceAbstractionStarter]: For program point L20(lines 20 24) no Hoare annotation was computed. [2018-11-10 06:57:06,789 INFO L425 ceAbstractionStarter]: For program point L23-3(line 23) no Hoare annotation was computed. [2018-11-10 06:57:06,789 INFO L425 ceAbstractionStarter]: For program point L18(lines 18 24) no Hoare annotation was computed. [2018-11-10 06:57:06,789 INFO L425 ceAbstractionStarter]: For program point fibo2FINAL(lines 17 25) no Hoare annotation was computed. [2018-11-10 06:57:06,789 INFO L425 ceAbstractionStarter]: For program point fibo2EXIT(lines 17 25) no Hoare annotation was computed. [2018-11-10 06:57:06,789 INFO L428 ceAbstractionStarter]: At program point fibo1ENTRY(lines 7 15) the Hoare annotation is: true [2018-11-10 06:57:06,789 INFO L421 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: (and (< 3 |fibo1_#in~n|) (<= fibo1_~n |fibo1_#in~n|) (<= |fibo1_#in~n| fibo1_~n)) [2018-11-10 06:57:06,790 INFO L425 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-11-10 06:57:06,790 INFO L421 ceAbstractionStarter]: At program point L13-2(line 13) the Hoare annotation is: (and (or (not (= |fibo1_#in~n| 6)) (and (<= |fibo1_#t~ret0| 5) (<= 5 |fibo1_#t~ret0|))) (<= fibo1_~n |fibo1_#in~n|) (or (not (= |fibo1_#in~n| 4)) (and (<= 2 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 2))) (or (<= fibo1_~n 4) (and (<= 3 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 3)) (<= 6 |fibo1_#in~n|)) (<= 4 fibo1_~n) (or (not (= |fibo1_#in~n| 8)) (and (<= |fibo1_#t~ret0| 13) (<= 13 |fibo1_#t~ret0|))) (<= |fibo1_#in~n| fibo1_~n)) [2018-11-10 06:57:06,790 INFO L425 ceAbstractionStarter]: For program point fibo1FINAL(lines 7 15) no Hoare annotation was computed. [2018-11-10 06:57:06,790 INFO L425 ceAbstractionStarter]: For program point L10(lines 10 14) no Hoare annotation was computed. [2018-11-10 06:57:06,790 INFO L425 ceAbstractionStarter]: For program point L13-3(line 13) no Hoare annotation was computed. [2018-11-10 06:57:06,790 INFO L425 ceAbstractionStarter]: For program point L8(lines 8 14) no Hoare annotation was computed. [2018-11-10 06:57:06,790 INFO L425 ceAbstractionStarter]: For program point fibo1EXIT(lines 7 15) no Hoare annotation was computed. [2018-11-10 06:57:06,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 06:57:06 BoogieIcfgContainer [2018-11-10 06:57:06,792 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 06:57:06,793 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 06:57:06,793 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 06:57:06,793 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 06:57:06,793 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:56:20" (3/4) ... [2018-11-10 06:57:06,796 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 06:57:06,800 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 06:57:06,801 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 06:57:06,801 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2018-11-10 06:57:06,801 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2018-11-10 06:57:06,803 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-10 06:57:06,804 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-10 06:57:06,804 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 06:57:06,829 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_71028725-bc7f-47cd-93b4-c71e856c8403/bin-2019/utaipan/witness.graphml [2018-11-10 06:57:06,829 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 06:57:06,829 INFO L168 Benchmark]: Toolchain (without parser) took 47122.38 ms. Allocated memory was 1.0 GB in the beginning and 3.5 GB in the end (delta: 2.4 GB). Free memory was 960.3 MB in the beginning and 802.8 MB in the end (delta: 157.5 MB). Peak memory consumption was 2.6 GB. Max. memory is 11.5 GB. [2018-11-10 06:57:06,830 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 06:57:06,830 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.25 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 948.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. [2018-11-10 06:57:06,830 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.46 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 06:57:06,830 INFO L168 Benchmark]: Boogie Preprocessor took 10.85 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 06:57:06,830 INFO L168 Benchmark]: RCFGBuilder took 179.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -178.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2018-11-10 06:57:06,831 INFO L168 Benchmark]: TraceAbstraction took 46719.37 ms. Allocated memory was 1.2 GB in the beginning and 3.5 GB in the end (delta: 2.3 GB). Free memory was 1.1 GB in the beginning and 802.8 MB in the end (delta: 321.7 MB). Peak memory consumption was 2.6 GB. Max. memory is 11.5 GB. [2018-11-10 06:57:06,831 INFO L168 Benchmark]: Witness Printer took 36.28 ms. Allocated memory is still 3.5 GB. Free memory is still 802.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 06:57:06,832 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 160.25 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 948.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.46 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.85 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 179.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -178.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 46719.37 ms. Allocated memory was 1.2 GB in the beginning and 3.5 GB in the end (delta: 2.3 GB). Free memory was 1.1 GB in the beginning and 802.8 MB in the end (delta: 321.7 MB). Peak memory consumption was 2.6 GB. Max. memory is 11.5 GB. * Witness Printer took 36.28 ms. Allocated memory is still 3.5 GB. Free memory is still 802.8 MB. There was no memory consumed. 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, 46.6s OverallTime, 26 OverallIterations, 55 TraceHistogramMax, 8.5s AutomataDifference, 0.0s DeadEndRemovalTime, 4.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 994 SDtfs, 1507 SDslu, 10313 SDs, 0 SdLazy, 10980 SolverSat, 1478 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.7s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 15990 GetRequests, 14866 SyntacticMatches, 302 SemanticMatches, 822 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6925 ImplicationChecksByTransitivity, 8.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=243occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.3s AbstIntTime, 5 AbstIntIterations, 4 AbstIntStrong, 0.959390862944163 AbsIntWeakeningRatio, 0.5685279187817259 AbsIntAvgWeakeningVarsNumRemoved, 1.6091370558375635 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 26 MinimizatonAttempts, 391 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 1505 PreInvPairs, 3559 NumberOfFragments, 173 HoareAnnotationTreeSize, 1505 FomulaSimplifications, 647024 FormulaSimplificationTreeSizeReduction, 2.7s HoareSimplificationTime, 11 FomulaSimplificationsInter, 20539 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 25.6s InterpolantComputationTime, 15316 NumberOfCodeBlocks, 13559 NumberOfCodeBlocksAsserted, 112 NumberOfCheckSat, 22794 ConstructedInterpolants, 0 QuantifiedInterpolants, 14939099 SizeOfPredicates, 128 NumberOfNonLiveVariables, 12599 ConjunctsInSsa, 526 ConjunctsInUnsatCore, 66 InterpolantComputations, 2 PerfectInterpolantSequences, 261424/291683 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...