java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label31_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 07:46:30,945 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 07:46:30,947 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 07:46:30,959 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 07:46:30,960 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 07:46:30,961 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 07:46:30,962 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 07:46:30,964 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 07:46:30,966 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 07:46:30,967 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 07:46:30,968 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 07:46:30,969 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 07:46:30,970 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 07:46:30,972 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 07:46:30,973 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 07:46:30,974 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 07:46:30,978 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 07:46:30,980 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 07:46:30,982 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 07:46:30,989 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 07:46:30,990 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 07:46:30,991 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 07:46:30,997 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 07:46:30,997 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 07:46:30,997 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 07:46:30,998 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 07:46:31,004 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 07:46:31,008 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 07:46:31,009 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 07:46:31,010 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 07:46:31,011 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 07:46:31,013 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 07:46:31,014 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 07:46:31,014 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 07:46:31,015 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 07:46:31,018 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 07:46:31,018 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 07:46:31,058 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 07:46:31,060 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 07:46:31,061 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 07:46:31,061 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 07:46:31,061 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 07:46:31,061 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 07:46:31,062 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 07:46:31,062 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 07:46:31,062 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 07:46:31,062 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 07:46:31,062 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 07:46:31,063 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 07:46:31,063 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 07:46:31,064 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 07:46:31,064 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 07:46:31,065 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 07:46:31,066 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 07:46:31,066 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 07:46:31,066 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 07:46:31,067 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 07:46:31,067 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 07:46:31,067 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 07:46:31,067 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 07:46:31,067 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 07:46:31,068 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 07:46:31,068 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 07:46:31,068 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 07:46:31,069 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 07:46:31,069 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 07:46:31,069 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 07:46:31,069 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 07:46:31,069 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 07:46:31,069 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 07:46:31,070 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 07:46:31,070 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 07:46:31,070 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 07:46:31,125 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 07:46:31,138 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 07:46:31,142 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 07:46:31,143 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 07:46:31,144 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 07:46:31,145 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label31_true-unreach-call.c [2018-10-27 07:46:31,206 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9b1eeada7/392ea63ee8e845f089679a27d10d396c/FLAGbc2951352 [2018-10-27 07:46:32,013 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 07:46:32,014 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label31_true-unreach-call.c [2018-10-27 07:46:32,050 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9b1eeada7/392ea63ee8e845f089679a27d10d396c/FLAGbc2951352 [2018-10-27 07:46:32,072 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9b1eeada7/392ea63ee8e845f089679a27d10d396c [2018-10-27 07:46:32,086 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 07:46:32,090 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 07:46:32,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 07:46:32,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 07:46:32,100 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 07:46:32,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:46:32" (1/1) ... [2018-10-27 07:46:32,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b326c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:46:32, skipping insertion in model container [2018-10-27 07:46:32,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:46:32" (1/1) ... [2018-10-27 07:46:32,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 07:46:32,291 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 07:46:33,539 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:46:33,546 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 07:46:34,294 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:46:34,332 INFO L193 MainTranslator]: Completed translation [2018-10-27 07:46:34,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:46:34 WrapperNode [2018-10-27 07:46:34,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 07:46:34,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 07:46:34,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 07:46:34,334 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 07:46:34,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:46:34" (1/1) ... [2018-10-27 07:46:34,426 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:46:34" (1/1) ... [2018-10-27 07:46:34,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 07:46:34,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 07:46:34,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 07:46:34,881 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 07:46:34,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:46:34" (1/1) ... [2018-10-27 07:46:34,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:46:34" (1/1) ... [2018-10-27 07:46:34,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:46:34" (1/1) ... [2018-10-27 07:46:34,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:46:34" (1/1) ... [2018-10-27 07:46:35,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:46:34" (1/1) ... [2018-10-27 07:46:35,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:46:34" (1/1) ... [2018-10-27 07:46:35,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:46:34" (1/1) ... [2018-10-27 07:46:35,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 07:46:35,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 07:46:35,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 07:46:35,180 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 07:46:35,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:46:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/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 [2018-10-27 07:46:35,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 07:46:35,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 07:46:35,260 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 07:46:35,260 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 07:46:35,261 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 07:46:35,261 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 07:46:35,261 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 07:46:35,261 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 07:46:35,262 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 07:46:35,262 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 07:46:35,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 07:46:35,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 07:46:35,262 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 07:46:35,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 07:46:46,482 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 07:46:46,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:46:46 BoogieIcfgContainer [2018-10-27 07:46:46,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 07:46:46,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 07:46:46,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 07:46:46,488 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 07:46:46,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:46:32" (1/3) ... [2018-10-27 07:46:46,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279b73a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:46:46, skipping insertion in model container [2018-10-27 07:46:46,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:46:34" (2/3) ... [2018-10-27 07:46:46,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279b73a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:46:46, skipping insertion in model container [2018-10-27 07:46:46,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:46:46" (3/3) ... [2018-10-27 07:46:46,492 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label31_true-unreach-call.c [2018-10-27 07:46:46,502 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 07:46:46,512 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 07:46:46,530 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 07:46:46,576 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 07:46:46,576 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 07:46:46,576 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 07:46:46,576 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 07:46:46,576 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 07:46:46,576 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 07:46:46,577 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 07:46:46,577 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 07:46:46,629 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-27 07:46:46,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-27 07:46:46,639 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:46:46,640 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:46:46,642 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:46:46,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:46:46,649 INFO L82 PathProgramCache]: Analyzing trace with hash -621967516, now seen corresponding path program 1 times [2018-10-27 07:46:46,652 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:46:46,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:46:46,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:46:46,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:46:46,705 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:46:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:46:47,173 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:46:47,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:46:47,334 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:46:47,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 07:46:47,334 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:46:47,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 07:46:47,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 07:46:47,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:46:47,363 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-27 07:46:55,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:46:55,952 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-27 07:46:55,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 07:46:55,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2018-10-27 07:46:55,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:46:55,992 INFO L225 Difference]: With dead ends: 2446 [2018-10-27 07:46:55,992 INFO L226 Difference]: Without dead ends: 1604 [2018-10-27 07:46:56,004 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:46:56,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-27 07:46:56,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-27 07:46:56,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-27 07:46:56,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3021 transitions. [2018-10-27 07:46:56,160 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3021 transitions. Word has length 70 [2018-10-27 07:46:56,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:46:56,161 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 3021 transitions. [2018-10-27 07:46:56,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 07:46:56,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3021 transitions. [2018-10-27 07:46:56,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-27 07:46:56,170 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:46:56,171 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:46:56,171 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:46:56,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:46:56,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1190970174, now seen corresponding path program 1 times [2018-10-27 07:46:56,172 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:46:56,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:46:56,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:46:56,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:46:56,174 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:46:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:46:56,547 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:46:56,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:46:56,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:46:56,548 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:46:56,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:46:56,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:46:56,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:46:56,551 INFO L87 Difference]: Start difference. First operand 1604 states and 3021 transitions. Second operand 6 states. [2018-10-27 07:47:14,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:47:14,018 INFO L93 Difference]: Finished difference Result 6330 states and 12128 transitions. [2018-10-27 07:47:14,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:47:14,021 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2018-10-27 07:47:14,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:47:14,056 INFO L225 Difference]: With dead ends: 6330 [2018-10-27 07:47:14,057 INFO L226 Difference]: Without dead ends: 4732 [2018-10-27 07:47:14,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:47:14,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2018-10-27 07:47:14,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 4700. [2018-10-27 07:47:14,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4700 states. [2018-10-27 07:47:14,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 7674 transitions. [2018-10-27 07:47:14,221 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 7674 transitions. Word has length 148 [2018-10-27 07:47:14,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:47:14,221 INFO L481 AbstractCegarLoop]: Abstraction has 4700 states and 7674 transitions. [2018-10-27 07:47:14,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:47:14,222 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 7674 transitions. [2018-10-27 07:47:14,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-27 07:47:14,227 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:47:14,228 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:47:14,228 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:47:14,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:47:14,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1674946466, now seen corresponding path program 1 times [2018-10-27 07:47:14,229 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:47:14,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:47:14,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:47:14,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:47:14,230 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:47:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:47:14,396 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:47:14,397 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:47:14,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 07:47:14,397 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:47:14,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 07:47:14,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 07:47:14,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-27 07:47:14,399 INFO L87 Difference]: Start difference. First operand 4700 states and 7674 transitions. Second operand 5 states. [2018-10-27 07:47:22,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:47:22,916 INFO L93 Difference]: Finished difference Result 14300 states and 23670 transitions. [2018-10-27 07:47:22,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 07:47:22,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2018-10-27 07:47:22,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:47:22,977 INFO L225 Difference]: With dead ends: 14300 [2018-10-27 07:47:22,977 INFO L226 Difference]: Without dead ends: 9606 [2018-10-27 07:47:22,993 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:47:23,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9606 states. [2018-10-27 07:47:23,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9606 to 9524. [2018-10-27 07:47:23,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9524 states. [2018-10-27 07:47:23,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9524 states to 9524 states and 14353 transitions. [2018-10-27 07:47:23,299 INFO L78 Accepts]: Start accepts. Automaton has 9524 states and 14353 transitions. Word has length 150 [2018-10-27 07:47:23,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:47:23,300 INFO L481 AbstractCegarLoop]: Abstraction has 9524 states and 14353 transitions. [2018-10-27 07:47:23,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 07:47:23,300 INFO L276 IsEmpty]: Start isEmpty. Operand 9524 states and 14353 transitions. [2018-10-27 07:47:23,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-27 07:47:23,304 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:47:23,305 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:47:23,305 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:47:23,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:47:23,305 INFO L82 PathProgramCache]: Analyzing trace with hash -170361029, now seen corresponding path program 1 times [2018-10-27 07:47:23,306 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:47:23,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:47:23,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:47:23,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:47:23,307 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:47:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:47:23,837 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:47:23,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:47:23,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:47:23,837 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:47:23,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:47:23,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:47:23,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:47:23,839 INFO L87 Difference]: Start difference. First operand 9524 states and 14353 transitions. Second operand 6 states. [2018-10-27 07:47:43,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:47:43,138 INFO L93 Difference]: Finished difference Result 38073 states and 60988 transitions. [2018-10-27 07:47:43,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:47:43,141 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2018-10-27 07:47:43,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:47:43,311 INFO L225 Difference]: With dead ends: 38073 [2018-10-27 07:47:43,311 INFO L226 Difference]: Without dead ends: 28555 [2018-10-27 07:47:43,395 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-27 07:47:43,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28555 states. [2018-10-27 07:47:44,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28555 to 28503. [2018-10-27 07:47:44,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28503 states. [2018-10-27 07:47:44,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28503 states to 28503 states and 41645 transitions. [2018-10-27 07:47:44,201 INFO L78 Accepts]: Start accepts. Automaton has 28503 states and 41645 transitions. Word has length 161 [2018-10-27 07:47:44,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:47:44,202 INFO L481 AbstractCegarLoop]: Abstraction has 28503 states and 41645 transitions. [2018-10-27 07:47:44,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:47:44,202 INFO L276 IsEmpty]: Start isEmpty. Operand 28503 states and 41645 transitions. [2018-10-27 07:47:44,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-27 07:47:44,209 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:47:44,209 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1] [2018-10-27 07:47:44,210 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:47:44,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:47:44,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1634908119, now seen corresponding path program 1 times [2018-10-27 07:47:44,210 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:47:44,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:47:44,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:47:44,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:47:44,212 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:47:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:47:44,553 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:47:44,994 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:47:44,994 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:47:44,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:47:44,995 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:47:44,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:47:44,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:47:44,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:47:44,996 INFO L87 Difference]: Start difference. First operand 28503 states and 41645 transitions. Second operand 6 states. [2018-10-27 07:48:00,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:48:00,181 INFO L93 Difference]: Finished difference Result 76148 states and 117566 transitions. [2018-10-27 07:48:00,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 07:48:00,182 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 195 [2018-10-27 07:48:00,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:48:00,390 INFO L225 Difference]: With dead ends: 76148 [2018-10-27 07:48:00,390 INFO L226 Difference]: Without dead ends: 47651 [2018-10-27 07:48:00,488 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:48:00,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47651 states. [2018-10-27 07:48:01,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47651 to 47489. [2018-10-27 07:48:01,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47489 states. [2018-10-27 07:48:02,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47489 states to 47489 states and 66709 transitions. [2018-10-27 07:48:02,159 INFO L78 Accepts]: Start accepts. Automaton has 47489 states and 66709 transitions. Word has length 195 [2018-10-27 07:48:02,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:48:02,160 INFO L481 AbstractCegarLoop]: Abstraction has 47489 states and 66709 transitions. [2018-10-27 07:48:02,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:48:02,160 INFO L276 IsEmpty]: Start isEmpty. Operand 47489 states and 66709 transitions. [2018-10-27 07:48:02,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-27 07:48:02,169 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:48:02,169 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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] [2018-10-27 07:48:02,170 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:48:02,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:48:02,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1213968518, now seen corresponding path program 1 times [2018-10-27 07:48:02,171 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:48:02,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:48:02,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:48:02,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:48:02,172 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:48:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:48:02,524 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:48:02,681 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-27 07:48:02,681 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:48:02,682 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:48:02,683 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 217 with the following transitions: [2018-10-27 07:48:02,685 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2299], [2307], [2315], [2323], [2327], [2329], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-27 07:48:02,738 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:48:02,738 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:48:04,023 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:48:04,025 INFO L272 AbstractInterpreter]: Visited 153 different actions 300 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 07:48:04,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:48:04,059 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:48:04,658 INFO L227 lantSequenceWeakener]: Weakened 213 states. On average, predicates are now at 78.25% of their original sizes. [2018-10-27 07:48:04,658 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:48:05,434 INFO L415 sIntCurrentIteration]: We unified 215 AI predicates to 215 [2018-10-27 07:48:05,434 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:48:05,435 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:48:05,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2018-10-27 07:48:05,436 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:48:05,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 07:48:05,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 07:48:05,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 07:48:05,437 INFO L87 Difference]: Start difference. First operand 47489 states and 66709 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown