java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label18_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 16:01:33,205 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 16:01:33,207 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 16:01:33,220 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 16:01:33,221 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 16:01:33,222 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 16:01:33,224 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 16:01:33,227 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 16:01:33,230 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 16:01:33,237 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 16:01:33,238 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 16:01:33,239 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 16:01:33,243 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 16:01:33,244 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 16:01:33,247 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 16:01:33,251 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 16:01:33,252 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 16:01:33,254 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 16:01:33,259 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 16:01:33,261 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 16:01:33,265 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 16:01:33,266 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 16:01:33,272 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 16:01:33,272 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 16:01:33,273 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 16:01:33,274 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 16:01:33,276 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 16:01:33,277 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 16:01:33,278 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 16:01:33,280 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 16:01:33,280 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 16:01:33,281 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 16:01:33,281 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 16:01:33,281 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 16:01:33,283 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 16:01:33,284 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 16:01:33,286 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 16:01:33,316 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 16:01:33,316 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 16:01:33,317 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 16:01:33,317 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 16:01:33,318 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 16:01:33,318 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 16:01:33,318 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 16:01:33,318 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 16:01:33,318 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 16:01:33,319 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 16:01:33,319 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 16:01:33,320 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 16:01:33,320 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 16:01:33,320 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 16:01:33,320 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 16:01:33,321 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 16:01:33,322 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 16:01:33,322 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 16:01:33,322 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 16:01:33,322 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 16:01:33,322 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 16:01:33,323 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 16:01:33,323 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 16:01:33,323 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 16:01:33,323 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 16:01:33,325 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 16:01:33,325 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 16:01:33,325 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 16:01:33,325 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 16:01:33,326 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 16:01:33,326 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 16:01:33,326 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 16:01:33,326 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 16:01:33,392 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 16:01:33,408 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 16:01:33,412 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 16:01:33,414 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 16:01:33,414 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 16:01:33,415 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label18_true-unreach-call.c [2018-09-14 16:01:33,766 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73c887885/e54be61e55314cfc9e9523b43a95f3f5/FLAGbd4f15177 [2018-09-14 16:01:34,105 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 16:01:34,106 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label18_true-unreach-call.c [2018-09-14 16:01:34,126 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73c887885/e54be61e55314cfc9e9523b43a95f3f5/FLAGbd4f15177 [2018-09-14 16:01:34,144 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73c887885/e54be61e55314cfc9e9523b43a95f3f5 [2018-09-14 16:01:34,156 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 16:01:34,159 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 16:01:34,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 16:01:34,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 16:01:34,168 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 16:01:34,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 04:01:34" (1/1) ... [2018-09-14 16:01:34,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@691afa30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:01:34, skipping insertion in model container [2018-09-14 16:01:34,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 04:01:34" (1/1) ... [2018-09-14 16:01:34,185 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 16:01:34,954 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 16:01:34,977 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 16:01:35,315 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 16:01:35,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:01:35 WrapperNode [2018-09-14 16:01:35,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 16:01:35,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 16:01:35,395 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 16:01:35,395 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 16:01:35,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:01:35" (1/1) ... [2018-09-14 16:01:35,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:01:35" (1/1) ... [2018-09-14 16:01:35,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 16:01:35,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 16:01:35,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 16:01:35,567 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 16:01:35,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:01:35" (1/1) ... [2018-09-14 16:01:35,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:01:35" (1/1) ... [2018-09-14 16:01:35,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:01:35" (1/1) ... [2018-09-14 16:01:35,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:01:35" (1/1) ... [2018-09-14 16:01:35,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:01:35" (1/1) ... [2018-09-14 16:01:35,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:01:35" (1/1) ... [2018-09-14 16:01:35,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:01:35" (1/1) ... [2018-09-14 16:01:35,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 16:01:35,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 16:01:35,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 16:01:35,916 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 16:01:35,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:01:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-14 16:01:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 16:01:35,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 16:01:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 16:01:35,990 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 16:01:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 16:01:35,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 16:01:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 16:01:35,991 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 16:01:40,684 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 16:01:40,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 04:01:40 BoogieIcfgContainer [2018-09-14 16:01:40,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 16:01:40,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 16:01:40,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 16:01:40,690 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 16:01:40,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 04:01:34" (1/3) ... [2018-09-14 16:01:40,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500bdfbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 04:01:40, skipping insertion in model container [2018-09-14 16:01:40,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:01:35" (2/3) ... [2018-09-14 16:01:40,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500bdfbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 04:01:40, skipping insertion in model container [2018-09-14 16:01:40,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 04:01:40" (3/3) ... [2018-09-14 16:01:40,695 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label18_true-unreach-call.c [2018-09-14 16:01:40,705 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 16:01:40,714 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 16:01:40,772 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 16:01:40,773 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 16:01:40,774 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 16:01:40,774 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 16:01:40,774 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 16:01:40,774 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 16:01:40,774 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 16:01:40,775 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 16:01:40,775 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 16:01:40,819 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-09-14 16:01:40,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-09-14 16:01:40,848 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:01:40,849 INFO L376 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, 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, 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] [2018-09-14 16:01:40,851 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:01:40,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1820417999, now seen corresponding path program 1 times [2018-09-14 16:01:40,858 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:01:40,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:40,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:40,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:40,911 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:01:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:41,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:01:41,918 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:01:41,918 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 16:01:41,919 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:01:41,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:01:41,941 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:01:41,942 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:01:41,945 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-09-14 16:01:44,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:01:44,366 INFO L93 Difference]: Finished difference Result 848 states and 1491 transitions. [2018-09-14 16:01:44,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:01:44,368 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2018-09-14 16:01:44,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:01:44,390 INFO L225 Difference]: With dead ends: 848 [2018-09-14 16:01:44,391 INFO L226 Difference]: Without dead ends: 534 [2018-09-14 16:01:44,399 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:01:44,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2018-09-14 16:01:44,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2018-09-14 16:01:44,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2018-09-14 16:01:44,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 867 transitions. [2018-09-14 16:01:44,489 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 867 transitions. Word has length 210 [2018-09-14 16:01:44,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:01:44,491 INFO L480 AbstractCegarLoop]: Abstraction has 532 states and 867 transitions. [2018-09-14 16:01:44,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:01:44,491 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 867 transitions. [2018-09-14 16:01:44,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-09-14 16:01:44,500 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:01:44,501 INFO L376 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:01:44,501 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:01:44,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1878986571, now seen corresponding path program 1 times [2018-09-14 16:01:44,502 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:01:44,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:44,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:44,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:44,504 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:01:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:45,016 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:01:45,017 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:01:45,017 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 16:01:45,017 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:01:45,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:01:45,020 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:01:45,021 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:01:45,021 INFO L87 Difference]: Start difference. First operand 532 states and 867 transitions. Second operand 3 states. [2018-09-14 16:01:47,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:01:47,902 INFO L93 Difference]: Finished difference Result 1493 states and 2512 transitions. [2018-09-14 16:01:47,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:01:47,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 223 [2018-09-14 16:01:47,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:01:47,912 INFO L225 Difference]: With dead ends: 1493 [2018-09-14 16:01:47,912 INFO L226 Difference]: Without dead ends: 967 [2018-09-14 16:01:47,919 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:01:47,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2018-09-14 16:01:47,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 951. [2018-09-14 16:01:47,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2018-09-14 16:01:47,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1540 transitions. [2018-09-14 16:01:47,970 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1540 transitions. Word has length 223 [2018-09-14 16:01:47,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:01:47,970 INFO L480 AbstractCegarLoop]: Abstraction has 951 states and 1540 transitions. [2018-09-14 16:01:47,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:01:47,970 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1540 transitions. [2018-09-14 16:01:47,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-09-14 16:01:47,977 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:01:47,977 INFO L376 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, 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, 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, 1, 1, 1, 1, 1, 1] [2018-09-14 16:01:47,978 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:01:47,978 INFO L82 PathProgramCache]: Analyzing trace with hash -463761996, now seen corresponding path program 1 times [2018-09-14 16:01:47,978 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:01:47,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:47,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:47,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:47,980 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:01:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:48,287 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:01:48,442 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:01:48,443 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:01:48,443 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 16:01:48,443 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:01:48,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:01:48,444 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:01:48,445 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 16:01:48,445 INFO L87 Difference]: Start difference. First operand 951 states and 1540 transitions. Second operand 6 states. [2018-09-14 16:01:51,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:01:51,755 INFO L93 Difference]: Finished difference Result 2784 states and 4694 transitions. [2018-09-14 16:01:51,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:01:51,760 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 238 [2018-09-14 16:01:51,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:01:51,775 INFO L225 Difference]: With dead ends: 2784 [2018-09-14 16:01:51,775 INFO L226 Difference]: Without dead ends: 1839 [2018-09-14 16:01:51,780 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 16:01:51,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2018-09-14 16:01:51,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1809. [2018-09-14 16:01:51,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1809 states. [2018-09-14 16:01:51,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2782 transitions. [2018-09-14 16:01:51,857 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2782 transitions. Word has length 238 [2018-09-14 16:01:51,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:01:51,857 INFO L480 AbstractCegarLoop]: Abstraction has 1809 states and 2782 transitions. [2018-09-14 16:01:51,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:01:51,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2782 transitions. [2018-09-14 16:01:51,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-09-14 16:01:51,868 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:01:51,869 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-09-14 16:01:51,869 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:01:51,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1286729823, now seen corresponding path program 1 times [2018-09-14 16:01:51,869 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:01:51,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:51,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:51,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:51,871 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:01:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:52,326 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:01:52,326 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:01:52,326 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-09-14 16:01:52,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:52,335 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:01:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:52,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:01:53,098 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-09-14 16:01:53,099 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:01:53,419 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-09-14 16:01:53,450 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:01:53,450 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-14 16:01:53,450 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:01:53,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:01:53,452 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:01:53,452 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-14 16:01:53,452 INFO L87 Difference]: Start difference. First operand 1809 states and 2782 transitions. Second operand 5 states. [2018-09-14 16:01:56,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:01:56,143 INFO L93 Difference]: Finished difference Result 5676 states and 8986 transitions. [2018-09-14 16:01:56,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 16:01:56,150 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 257 [2018-09-14 16:01:56,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:01:56,175 INFO L225 Difference]: With dead ends: 5676 [2018-09-14 16:01:56,175 INFO L226 Difference]: Without dead ends: 3873 [2018-09-14 16:01:56,185 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 506 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2018-09-14 16:01:56,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3873 states. [2018-09-14 16:01:56,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3873 to 3650. [2018-09-14 16:01:56,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3650 states. [2018-09-14 16:01:56,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 5476 transitions. [2018-09-14 16:01:56,303 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 5476 transitions. Word has length 257 [2018-09-14 16:01:56,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:01:56,304 INFO L480 AbstractCegarLoop]: Abstraction has 3650 states and 5476 transitions. [2018-09-14 16:01:56,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:01:56,304 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 5476 transitions. [2018-09-14 16:01:56,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-09-14 16:01:56,321 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:01:56,321 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:01:56,322 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:01:56,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1350497136, now seen corresponding path program 1 times [2018-09-14 16:01:56,322 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:01:56,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:56,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:56,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:56,324 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:01:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:56,674 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:01:56,675 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:01:56,675 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-09-14 16:01:56,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:56,686 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:01:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:56,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:01:57,088 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-09-14 16:01:57,088 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:01:57,316 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-09-14 16:01:57,337 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 16:01:57,338 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-09-14 16:01:57,338 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:01:57,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:01:57,339 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:01:57,339 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-14 16:01:57,339 INFO L87 Difference]: Start difference. First operand 3650 states and 5476 transitions. Second operand 3 states. [2018-09-14 16:02:00,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:02:00,166 INFO L93 Difference]: Finished difference Result 10613 states and 16361 transitions. [2018-09-14 16:02:00,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:02:00,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 257 [2018-09-14 16:02:00,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:02:00,216 INFO L225 Difference]: With dead ends: 10613 [2018-09-14 16:02:00,216 INFO L226 Difference]: Without dead ends: 6969 [2018-09-14 16:02:00,235 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 512 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-14 16:02:00,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6969 states. [2018-09-14 16:02:00,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6969 to 6958. [2018-09-14 16:02:00,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6958 states. [2018-09-14 16:02:00,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6958 states to 6958 states and 10248 transitions. [2018-09-14 16:02:00,543 INFO L78 Accepts]: Start accepts. Automaton has 6958 states and 10248 transitions. Word has length 257 [2018-09-14 16:02:00,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:02:00,544 INFO L480 AbstractCegarLoop]: Abstraction has 6958 states and 10248 transitions. [2018-09-14 16:02:00,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:02:00,544 INFO L276 IsEmpty]: Start isEmpty. Operand 6958 states and 10248 transitions. [2018-09-14 16:02:00,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-09-14 16:02:00,573 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:02:00,574 INFO L376 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, 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, 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] [2018-09-14 16:02:00,574 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:02:00,574 INFO L82 PathProgramCache]: Analyzing trace with hash -789122775, now seen corresponding path program 1 times [2018-09-14 16:02:00,575 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:02:00,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:02:00,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:02:00,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:02:00,576 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:02:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:02:01,259 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:02:01,259 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:02:01,260 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 16:02:01,260 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:02:01,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 16:02:01,261 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 16:02:01,261 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 16:02:01,263 INFO L87 Difference]: Start difference. First operand 6958 states and 10248 transitions. Second operand 4 states. [2018-09-14 16:02:04,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:02:04,033 INFO L93 Difference]: Finished difference Result 18988 states and 28514 transitions. [2018-09-14 16:02:04,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 16:02:04,034 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 256 [2018-09-14 16:02:04,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:02:04,102 INFO L225 Difference]: With dead ends: 18988 [2018-09-14 16:02:04,102 INFO L226 Difference]: Without dead ends: 12036 [2018-09-14 16:02:04,137 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 16:02:04,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12036 states. [2018-09-14 16:02:04,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12036 to 11896. [2018-09-14 16:02:04,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11896 states. [2018-09-14 16:02:04,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11896 states to 11896 states and 17353 transitions. [2018-09-14 16:02:04,467 INFO L78 Accepts]: Start accepts. Automaton has 11896 states and 17353 transitions. Word has length 256 [2018-09-14 16:02:04,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:02:04,468 INFO L480 AbstractCegarLoop]: Abstraction has 11896 states and 17353 transitions. [2018-09-14 16:02:04,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 16:02:04,468 INFO L276 IsEmpty]: Start isEmpty. Operand 11896 states and 17353 transitions. [2018-09-14 16:02:04,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-09-14 16:02:04,503 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:02:04,503 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-09-14 16:02:04,504 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:02:04,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1876536729, now seen corresponding path program 1 times [2018-09-14 16:02:04,504 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:02:04,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:02:04,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:02:04,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:02:04,513 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:02:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:02:05,164 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-09-14 16:02:05,357 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-09-14 16:02:05,737 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-09-14 16:02:05,737 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:02:05,738 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 16:02:05,738 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:02:05,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:02:05,739 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:02:05,739 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-09-14 16:02:05,739 INFO L87 Difference]: Start difference. First operand 11896 states and 17353 transitions. Second operand 6 states. [2018-09-14 16:02:09,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:02:09,853 INFO L93 Difference]: Finished difference Result 24584 states and 36132 transitions. [2018-09-14 16:02:09,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-14 16:02:09,854 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 258 [2018-09-14 16:02:09,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:02:09,909 INFO L225 Difference]: With dead ends: 24584 [2018-09-14 16:02:09,909 INFO L226 Difference]: Without dead ends: 12674 [2018-09-14 16:02:09,949 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-09-14 16:02:09,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12674 states. [2018-09-14 16:02:10,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12674 to 12496. [2018-09-14 16:02:10,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12496 states. [2018-09-14 16:02:10,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12496 states to 12496 states and 18059 transitions. [2018-09-14 16:02:10,222 INFO L78 Accepts]: Start accepts. Automaton has 12496 states and 18059 transitions. Word has length 258 [2018-09-14 16:02:10,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:02:10,223 INFO L480 AbstractCegarLoop]: Abstraction has 12496 states and 18059 transitions. [2018-09-14 16:02:10,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:02:10,223 INFO L276 IsEmpty]: Start isEmpty. Operand 12496 states and 18059 transitions. [2018-09-14 16:02:10,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-09-14 16:02:10,260 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:02:10,261 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2018-09-14 16:02:10,261 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:02:10,261 INFO L82 PathProgramCache]: Analyzing trace with hash -275432893, now seen corresponding path program 1 times [2018-09-14 16:02:10,261 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:02:10,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:02:10,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:02:10,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:02:10,263 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:02:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:02:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:02:10,840 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:02:10,840 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-09-14 16:02:10,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:02:10,854 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:02:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:02:11,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:02:11,159 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:02:11,159 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:02:11,827 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:02:11,849 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:02:11,849 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:02:11,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:02:11,866 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:02:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:02:12,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:02:12,522 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 89 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:02:12,522 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:02:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:02:12,961 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:02:12,961 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 7, 5] total 10 [2018-09-14 16:02:12,961 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:02:12,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 16:02:12,965 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 16:02:12,965 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-09-14 16:02:12,966 INFO L87 Difference]: Start difference. First operand 12496 states and 18059 transitions. Second operand 7 states. [2018-09-14 16:02:16,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:02:16,406 INFO L93 Difference]: Finished difference Result 30029 states and 45717 transitions. [2018-09-14 16:02:16,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 16:02:16,406 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 304 [2018-09-14 16:02:16,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:02:16,495 INFO L225 Difference]: With dead ends: 30029 [2018-09-14 16:02:16,495 INFO L226 Difference]: Without dead ends: 17539 [2018-09-14 16:02:16,530 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1224 GetRequests, 1210 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-09-14 16:02:16,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17539 states. [2018-09-14 16:02:16,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17539 to 17207. [2018-09-14 16:02:16,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17207 states. [2018-09-14 16:02:16,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17207 states to 17207 states and 23913 transitions. [2018-09-14 16:02:16,993 INFO L78 Accepts]: Start accepts. Automaton has 17207 states and 23913 transitions. Word has length 304 [2018-09-14 16:02:16,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:02:16,994 INFO L480 AbstractCegarLoop]: Abstraction has 17207 states and 23913 transitions. [2018-09-14 16:02:16,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 16:02:16,994 INFO L276 IsEmpty]: Start isEmpty. Operand 17207 states and 23913 transitions. [2018-09-14 16:02:17,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-09-14 16:02:17,042 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:02:17,043 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-09-14 16:02:17,043 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:02:17,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1030641667, now seen corresponding path program 1 times [2018-09-14 16:02:17,043 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:02:17,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:02:17,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:02:17,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:02:17,045 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:02:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:02:17,372 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:02:18,008 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 115 proven. 60 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:02:18,008 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:02:18,008 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-09-14 16:02:18,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:02:18,016 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:02:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:02:18,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:02:18,359 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-09-14 16:02:18,360 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:02:18,670 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 117 proven. 43 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-09-14 16:02:18,692 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:02:18,693 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:02:18,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:02:18,708 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:02:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:02:19,252 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:02:19,398 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-09-14 16:02:19,398 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:02:19,630 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 117 proven. 43 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-09-14 16:02:19,633 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:02:19,634 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 5, 5] total 21 [2018-09-14 16:02:19,634 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:02:19,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-14 16:02:19,636 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-14 16:02:19,636 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2018-09-14 16:02:19,636 INFO L87 Difference]: Start difference. First operand 17207 states and 23913 transitions. Second operand 14 states. [2018-09-14 16:02:35,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:02:35,153 INFO L93 Difference]: Finished difference Result 74326 states and 155058 transitions. [2018-09-14 16:02:35,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-14 16:02:35,154 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 328 [2018-09-14 16:02:35,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:02:35,628 INFO L225 Difference]: With dead ends: 74326 [2018-09-14 16:02:35,628 INFO L226 Difference]: Without dead ends: 57170 [2018-09-14 16:02:35,713 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1432 GetRequests, 1342 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2786 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1642, Invalid=6368, Unknown=0, NotChecked=0, Total=8010 [2018-09-14 16:02:35,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57170 states. [2018-09-14 16:02:38,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57170 to 50249. [2018-09-14 16:02:38,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50249 states. [2018-09-14 16:02:38,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50249 states to 50249 states and 72705 transitions. [2018-09-14 16:02:38,500 INFO L78 Accepts]: Start accepts. Automaton has 50249 states and 72705 transitions. Word has length 328 [2018-09-14 16:02:38,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:02:38,500 INFO L480 AbstractCegarLoop]: Abstraction has 50249 states and 72705 transitions. [2018-09-14 16:02:38,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-14 16:02:38,501 INFO L276 IsEmpty]: Start isEmpty. Operand 50249 states and 72705 transitions. [2018-09-14 16:02:38,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2018-09-14 16:02:38,719 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:02:38,719 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-09-14 16:02:38,720 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:02:38,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1944331385, now seen corresponding path program 1 times [2018-09-14 16:02:38,720 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:02:38,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:02:38,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:02:38,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:02:38,722 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:02:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:02:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 170 proven. 65 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-14 16:02:39,406 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:02:39,406 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-09-14 16:02:39,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:02:39,418 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:02:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:02:39,668 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:02:40,362 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-14 16:02:40,362 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:02:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 170 proven. 65 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-14 16:02:40,555 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:02:40,555 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:02:40,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:02:40,574 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:02:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:02:41,154 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:02:41,829 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-14 16:02:41,829 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:02:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 170 proven. 65 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-14 16:02:42,085 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:02:42,085 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-14 16:02:42,085 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:02:42,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 16:02:42,087 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 16:02:42,087 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-14 16:02:42,087 INFO L87 Difference]: Start difference. First operand 50249 states and 72705 transitions. Second operand 9 states. [2018-09-14 16:02:58,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:02:58,675 INFO L93 Difference]: Finished difference Result 220797 states and 419961 transitions. [2018-09-14 16:02:58,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-14 16:02:58,675 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 371 [2018-09-14 16:02:58,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:02:59,921 INFO L225 Difference]: With dead ends: 220797 [2018-09-14 16:02:59,922 INFO L226 Difference]: Without dead ends: 170559 [2018-09-14 16:03:00,224 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1564 GetRequests, 1511 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=503, Invalid=2253, Unknown=0, NotChecked=0, Total=2756 [2018-09-14 16:03:00,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170559 states. [2018-09-14 16:03:06,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170559 to 153289. [2018-09-14 16:03:06,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153289 states. [2018-09-14 16:03:07,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153289 states to 153289 states and 219447 transitions. [2018-09-14 16:03:07,241 INFO L78 Accepts]: Start accepts. Automaton has 153289 states and 219447 transitions. Word has length 371 [2018-09-14 16:03:07,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:03:07,241 INFO L480 AbstractCegarLoop]: Abstraction has 153289 states and 219447 transitions. [2018-09-14 16:03:07,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 16:03:07,241 INFO L276 IsEmpty]: Start isEmpty. Operand 153289 states and 219447 transitions. [2018-09-14 16:03:07,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-09-14 16:03:07,766 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:03:07,766 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:03:07,767 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:03:07,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1016366656, now seen corresponding path program 1 times [2018-09-14 16:03:07,767 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:03:07,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:03:07,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:03:07,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:03:07,768 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:03:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:03:08,437 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 225 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:03:08,437 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:03:08,438 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-09-14 16:03:08,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:03:08,452 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:03:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:03:08,680 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:03:09,892 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 225 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:03:09,893 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:03:10,097 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 225 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:03:10,119 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:03:10,119 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:03:10,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:03:10,138 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:03:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:03:10,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:03:10,846 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 225 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:03:10,847 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:03:11,059 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 225 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:03:11,063 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:03:11,063 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 6] total 16 [2018-09-14 16:03:11,064 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:03:11,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 16:03:11,064 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 16:03:11,065 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-09-14 16:03:11,065 INFO L87 Difference]: Start difference. First operand 153289 states and 219447 transitions. Second operand 7 states. [2018-09-14 16:03:19,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:03:19,905 INFO L93 Difference]: Finished difference Result 318457 states and 483283 transitions. [2018-09-14 16:03:19,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 16:03:19,905 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 377 [2018-09-14 16:03:19,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:03:20,710 INFO L225 Difference]: With dead ends: 318457 [2018-09-14 16:03:20,710 INFO L226 Difference]: Without dead ends: 165369 [2018-09-14 16:03:21,177 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1516 GetRequests, 1498 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2018-09-14 16:03:21,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165369 states. [2018-09-14 16:03:26,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165369 to 158240. [2018-09-14 16:03:26,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158240 states. [2018-09-14 16:03:27,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158240 states to 158240 states and 210582 transitions. [2018-09-14 16:03:27,993 INFO L78 Accepts]: Start accepts. Automaton has 158240 states and 210582 transitions. Word has length 377 [2018-09-14 16:03:27,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:03:27,993 INFO L480 AbstractCegarLoop]: Abstraction has 158240 states and 210582 transitions. [2018-09-14 16:03:27,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 16:03:27,994 INFO L276 IsEmpty]: Start isEmpty. Operand 158240 states and 210582 transitions. [2018-09-14 16:03:28,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-09-14 16:03:28,526 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:03:28,526 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:03:28,527 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:03:28,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1423222277, now seen corresponding path program 1 times [2018-09-14 16:03:28,527 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:03:28,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:03:28,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:03:28,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:03:28,529 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:03:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:03:29,242 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 225 proven. 31 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-14 16:03:29,242 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:03:29,242 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-09-14 16:03:29,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:03:29,257 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:03:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:03:29,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:03:29,720 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 254 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-14 16:03:29,720 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:03:29,888 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 225 proven. 31 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-14 16:03:29,911 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:03:29,912 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:03:29,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:03:29,929 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:03:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:03:30,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:03:30,700 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 254 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-14 16:03:30,700 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:03:30,947 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 225 proven. 31 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-14 16:03:30,950 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:03:30,951 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 5] total 14 [2018-09-14 16:03:30,951 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:03:30,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:03:30,951 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:03:30,952 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2018-09-14 16:03:30,952 INFO L87 Difference]: Start difference. First operand 158240 states and 210582 transitions. Second operand 6 states. [2018-09-14 16:03:41,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:03:41,975 INFO L93 Difference]: Finished difference Result 309559 states and 445639 transitions. [2018-09-14 16:03:41,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 16:03:41,975 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 409 [2018-09-14 16:03:41,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:03:42,855 INFO L225 Difference]: With dead ends: 309559 [2018-09-14 16:03:42,855 INFO L226 Difference]: Without dead ends: 151355 [2018-09-14 16:03:43,292 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1646 GetRequests, 1629 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-09-14 16:03:43,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151355 states. [2018-09-14 16:03:47,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151355 to 142557. [2018-09-14 16:03:47,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142557 states. [2018-09-14 16:03:47,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142557 states to 142557 states and 178733 transitions. [2018-09-14 16:03:47,862 INFO L78 Accepts]: Start accepts. Automaton has 142557 states and 178733 transitions. Word has length 409 [2018-09-14 16:03:47,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:03:47,863 INFO L480 AbstractCegarLoop]: Abstraction has 142557 states and 178733 transitions. [2018-09-14 16:03:47,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:03:47,863 INFO L276 IsEmpty]: Start isEmpty. Operand 142557 states and 178733 transitions. [2018-09-14 16:03:48,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-09-14 16:03:48,244 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:03:48,245 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-09-14 16:03:48,245 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:03:48,245 INFO L82 PathProgramCache]: Analyzing trace with hash 771386923, now seen corresponding path program 1 times [2018-09-14 16:03:48,245 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:03:48,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:03:48,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:03:48,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:03:48,247 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:03:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:03:48,621 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:03:49,120 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 192 proven. 101 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-14 16:03:49,121 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:03:49,121 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-09-14 16:03:49,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:03:49,129 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:03:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:03:50,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:03:50,332 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-09-14 16:03:50,332 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:03:50,592 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 192 proven. 101 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-14 16:03:50,614 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:03:50,614 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-09-14 16:03:50,614 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:03:50,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:03:50,615 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:03:50,615 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-09-14 16:03:50,615 INFO L87 Difference]: Start difference. First operand 142557 states and 178733 transitions. Second operand 6 states. [2018-09-14 16:03:56,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:03:56,308 INFO L93 Difference]: Finished difference Result 253424 states and 316954 transitions. [2018-09-14 16:03:56,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 16:03:56,308 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 413 [2018-09-14 16:03:56,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:03:56,809 INFO L225 Difference]: With dead ends: 253424 [2018-09-14 16:03:56,809 INFO L226 Difference]: Without dead ends: 145805 [2018-09-14 16:03:57,028 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 839 GetRequests, 818 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2018-09-14 16:03:57,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145805 states. [2018-09-14 16:04:00,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145805 to 142235. [2018-09-14 16:04:00,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142235 states. [2018-09-14 16:04:01,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142235 states to 142235 states and 177884 transitions. [2018-09-14 16:04:01,464 INFO L78 Accepts]: Start accepts. Automaton has 142235 states and 177884 transitions. Word has length 413 [2018-09-14 16:04:01,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:04:01,465 INFO L480 AbstractCegarLoop]: Abstraction has 142235 states and 177884 transitions. [2018-09-14 16:04:01,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:04:01,465 INFO L276 IsEmpty]: Start isEmpty. Operand 142235 states and 177884 transitions. [2018-09-14 16:04:01,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-09-14 16:04:01,920 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:04:01,921 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-09-14 16:04:01,921 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:04:01,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1698300856, now seen corresponding path program 1 times [2018-09-14 16:04:01,922 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:04:01,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:04:01,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:04:01,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:04:01,923 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:04:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:04:02,541 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 196 proven. 105 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-14 16:04:02,541 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:04:02,541 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-09-14 16:04:02,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:04:02,553 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:04:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:04:02,810 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:04:03,044 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-09-14 16:04:03,044 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:04:03,278 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 196 proven. 105 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-14 16:04:03,301 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:04:03,301 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 16:04:03,301 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:04:03,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:04:03,302 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:04:03,302 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-09-14 16:04:03,303 INFO L87 Difference]: Start difference. First operand 142235 states and 177884 transitions. Second operand 5 states. [2018-09-14 16:04:09,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:04:09,956 INFO L93 Difference]: Finished difference Result 341348 states and 430544 transitions. [2018-09-14 16:04:09,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 16:04:09,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 415 [2018-09-14 16:04:09,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:04:10,802 INFO L225 Difference]: With dead ends: 341348 [2018-09-14 16:04:10,803 INFO L226 Difference]: Without dead ends: 199632 [2018-09-14 16:04:11,212 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 837 GetRequests, 825 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-09-14 16:04:11,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199632 states. [2018-09-14 16:04:16,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199632 to 192332. [2018-09-14 16:04:16,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192332 states. [2018-09-14 16:04:17,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192332 states to 192332 states and 240781 transitions. [2018-09-14 16:04:17,563 INFO L78 Accepts]: Start accepts. Automaton has 192332 states and 240781 transitions. Word has length 415 [2018-09-14 16:04:17,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:04:17,564 INFO L480 AbstractCegarLoop]: Abstraction has 192332 states and 240781 transitions. [2018-09-14 16:04:17,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:04:17,564 INFO L276 IsEmpty]: Start isEmpty. Operand 192332 states and 240781 transitions. [2018-09-14 16:04:18,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2018-09-14 16:04:18,035 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:04:18,035 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:04:18,036 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:04:18,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1836363141, now seen corresponding path program 1 times [2018-09-14 16:04:18,036 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:04:18,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:04:18,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:04:18,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:04:18,037 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:04:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:04:18,828 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 358 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:04:18,828 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:04:18,828 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-09-14 16:04:18,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:04:18,838 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:04:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:04:19,091 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:04:19,258 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-14 16:04:19,258 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:04:19,453 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2018-09-14 16:04:20,583 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 297 proven. 65 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-14 16:04:20,605 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:04:20,605 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:04:20,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:04:20,623 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:04:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:04:21,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:04:21,677 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 416 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-14 16:04:21,678 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:04:21,817 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-14 16:04:21,965 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-14 16:04:22,230 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-14 16:04:22,567 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 361 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:04:22,570 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:04:22,570 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 8, 8] total 25 [2018-09-14 16:04:22,571 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:04:22,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-14 16:04:22,572 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-14 16:04:22,572 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2018-09-14 16:04:22,573 INFO L87 Difference]: Start difference. First operand 192332 states and 240781 transitions. Second operand 13 states. [2018-09-14 16:04:33,249 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2018-09-14 16:04:33,653 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2018-09-14 16:04:35,650 WARN L178 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2018-09-14 16:04:36,041 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2018-09-14 16:04:38,668 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-14 16:04:42,652 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 21 Received shutdown request... [2018-09-14 16:05:09,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-09-14 16:05:09,695 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 16:05:09,701 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 16:05:09,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 04:05:09 BoogieIcfgContainer [2018-09-14 16:05:09,702 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 16:05:09,703 INFO L168 Benchmark]: Toolchain (without parser) took 215546.21 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -858.7 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-09-14 16:05:09,704 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 16:05:09,704 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1233.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-09-14 16:05:09,705 INFO L168 Benchmark]: Boogie Procedure Inliner took 172.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-14 16:05:09,706 INFO L168 Benchmark]: Boogie Preprocessor took 348.77 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 810.0 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -949.1 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. [2018-09-14 16:05:09,707 INFO L168 Benchmark]: RCFGBuilder took 4768.92 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 251.4 MB). Peak memory consumption was 251.4 MB. Max. memory is 7.1 GB. [2018-09-14 16:05:09,707 INFO L168 Benchmark]: TraceAbstraction took 209015.98 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 2.0 GB in the beginning and 2.3 GB in the end (delta: -266.7 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-09-14 16:05:09,712 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1233.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 172.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 348.77 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 810.0 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -949.1 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4768.92 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 251.4 MB). Peak memory consumption was 251.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209015.98 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 2.0 GB in the beginning and 2.3 GB in the end (delta: -266.7 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1644]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1644). Cancelled while BasicCegarLoop was constructing difference of abstraction (192332states) and FLOYD_HOARE automaton (currently 147 states, 13 states before enhancement), while ReachableStatesComputation was computing reachable states (569667 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 208.9s OverallTime, 15 OverallIterations, 4 TraceHistogramMax, 143.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3060 SDtfs, 24752 SDslu, 4651 SDs, 0 SdLazy, 41837 SolverSat, 9497 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 59.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12124 GetRequests, 11695 SyntacticMatches, 32 SemanticMatches, 397 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13919 ImplicationChecksByTransitivity, 20.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=192332occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 33.6s AutomataMinimizationTime, 14 MinimizatonAttempts, 51920 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.1s SsaConstructionTime, 6.2s SatisfiabilityAnalysisTime, 19.6s InterpolantComputationTime, 10571 NumberOfCodeBlocks, 10571 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 16334 ConstructedInterpolants, 0 QuantifiedInterpolants, 15252000 SizeOfPredicates, 32 NumberOfNonLiveVariables, 20375 ConjunctsInSsa, 161 ConjunctsInUnsatCore, 47 InterpolantComputations, 10 PerfectInterpolantSequences, 8944/10046 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label18_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_16-05-09-727.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label18_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_16-05-09-727.csv Completed graceful shutdown