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_label04_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 16:00:04,083 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 16:00:04,085 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 16:00:04,101 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 16:00:04,101 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 16:00:04,103 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 16:00:04,104 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 16:00:04,108 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 16:00:04,110 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 16:00:04,112 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 16:00:04,112 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 16:00:04,113 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 16:00:04,114 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 16:00:04,115 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 16:00:04,116 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 16:00:04,121 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 16:00:04,122 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 16:00:04,127 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 16:00:04,129 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 16:00:04,133 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 16:00:04,134 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 16:00:04,138 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 16:00:04,143 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 16:00:04,143 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 16:00:04,146 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 16:00:04,147 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 16:00:04,148 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 16:00:04,149 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 16:00:04,150 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 16:00:04,151 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 16:00:04,154 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 16:00:04,155 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 16:00:04,155 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 16:00:04,155 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 16:00:04,158 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 16:00:04,160 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 16:00:04,160 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 16:00:04,188 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 16:00:04,189 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 16:00:04,190 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 16:00:04,190 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 16:00:04,190 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 16:00:04,190 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 16:00:04,191 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 16:00:04,191 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 16:00:04,191 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 16:00:04,191 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 16:00:04,191 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 16:00:04,192 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 16:00:04,192 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 16:00:04,194 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 16:00:04,194 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 16:00:04,194 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 16:00:04,194 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 16:00:04,194 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 16:00:04,194 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 16:00:04,195 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 16:00:04,195 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 16:00:04,195 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 16:00:04,195 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 16:00:04,195 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 16:00:04,196 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 16:00:04,196 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 16:00:04,196 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 16:00:04,196 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 16:00:04,198 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 16:00:04,198 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 16:00:04,198 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 16:00:04,199 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 16:00:04,199 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 16:00:04,256 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 16:00:04,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 16:00:04,278 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 16:00:04,279 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 16:00:04,280 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 16:00:04,280 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label04_true-unreach-call.c [2018-09-14 16:00:04,621 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bf59d8d2/c248fd8ca5314407b28956cc1555e0a4/FLAGa6a5da01b [2018-09-14 16:00:04,991 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 16:00:04,992 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label04_true-unreach-call.c [2018-09-14 16:00:05,010 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bf59d8d2/c248fd8ca5314407b28956cc1555e0a4/FLAGa6a5da01b [2018-09-14 16:00:05,029 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bf59d8d2/c248fd8ca5314407b28956cc1555e0a4 [2018-09-14 16:00:05,044 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 16:00:05,047 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 16:00:05,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 16:00:05,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 16:00:05,055 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 16:00:05,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 04:00:05" (1/1) ... [2018-09-14 16:00:05,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66ef8fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:00:05, skipping insertion in model container [2018-09-14 16:00:05,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 04:00:05" (1/1) ... [2018-09-14 16:00:05,072 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 16:00:05,791 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 16:00:05,810 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 16:00:06,027 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 16:00:06,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:00:06 WrapperNode [2018-09-14 16:00:06,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 16:00:06,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 16:00:06,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 16:00:06,092 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 16:00:06,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:00:06" (1/1) ... [2018-09-14 16:00:06,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:00:06" (1/1) ... [2018-09-14 16:00:06,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 16:00:06,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 16:00:06,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 16:00:06,247 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 16:00:06,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:00:06" (1/1) ... [2018-09-14 16:00:06,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:00:06" (1/1) ... [2018-09-14 16:00:06,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:00:06" (1/1) ... [2018-09-14 16:00:06,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:00:06" (1/1) ... [2018-09-14 16:00:06,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:00:06" (1/1) ... [2018-09-14 16:00:06,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:00:06" (1/1) ... [2018-09-14 16:00:06,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:00:06" (1/1) ... [2018-09-14 16:00:06,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 16:00:06,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 16:00:06,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 16:00:06,635 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 16:00:06,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:00:06" (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 16:00:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 16:00:06,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 16:00:06,713 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 16:00:06,713 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 16:00:06,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 16:00:06,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 16:00:06,713 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 16:00:06,714 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 16:00:11,452 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 16:00:11,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 04:00:11 BoogieIcfgContainer [2018-09-14 16:00:11,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 16:00:11,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 16:00:11,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 16:00:11,459 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 16:00:11,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 04:00:05" (1/3) ... [2018-09-14 16:00:11,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea2b1b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 04:00:11, skipping insertion in model container [2018-09-14 16:00:11,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:00:06" (2/3) ... [2018-09-14 16:00:11,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea2b1b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 04:00:11, skipping insertion in model container [2018-09-14 16:00:11,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 04:00:11" (3/3) ... [2018-09-14 16:00:11,465 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label04_true-unreach-call.c [2018-09-14 16:00:11,479 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 16:00:11,491 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 16:00:11,571 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 16:00:11,572 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 16:00:11,572 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 16:00:11,572 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 16:00:11,573 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 16:00:11,573 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 16:00:11,573 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 16:00:11,573 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 16:00:11,573 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 16:00:11,612 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-09-14 16:00:11,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-09-14 16:00:11,643 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:00:11,645 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] [2018-09-14 16:00:11,646 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:00:11,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1740554548, now seen corresponding path program 1 times [2018-09-14 16:00:11,660 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:00:11,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:11,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:11,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:11,724 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:00:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:12,823 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 16:00:12,825 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:00:12,826 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 16:00:12,826 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:00:12,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 16:00:12,849 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 16:00:12,850 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 16:00:12,853 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-09-14 16:00:16,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:00:16,011 INFO L93 Difference]: Finished difference Result 1057 states and 1905 transitions. [2018-09-14 16:00:16,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 16:00:16,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 205 [2018-09-14 16:00:16,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:00:16,044 INFO L225 Difference]: With dead ends: 1057 [2018-09-14 16:00:16,044 INFO L226 Difference]: Without dead ends: 739 [2018-09-14 16:00:16,058 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 16:00:16,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2018-09-14 16:00:16,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 528. [2018-09-14 16:00:16,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2018-09-14 16:00:16,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 879 transitions. [2018-09-14 16:00:16,166 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 879 transitions. Word has length 205 [2018-09-14 16:00:16,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:00:16,168 INFO L480 AbstractCegarLoop]: Abstraction has 528 states and 879 transitions. [2018-09-14 16:00:16,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 16:00:16,168 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 879 transitions. [2018-09-14 16:00:16,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-09-14 16:00:16,176 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:00:16,177 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] [2018-09-14 16:00:16,177 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:00:16,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1550134832, now seen corresponding path program 1 times [2018-09-14 16:00:16,178 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:00:16,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:16,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:16,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:16,179 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:00:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:16,615 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 16:00:16,616 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:00:16,616 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 16:00:16,616 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:00:16,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:00:16,621 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:00:16,621 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:00:16,621 INFO L87 Difference]: Start difference. First operand 528 states and 879 transitions. Second operand 3 states. [2018-09-14 16:00:18,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:00:18,799 INFO L93 Difference]: Finished difference Result 1482 states and 2549 transitions. [2018-09-14 16:00:18,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:00:18,800 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2018-09-14 16:00:18,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:00:18,810 INFO L225 Difference]: With dead ends: 1482 [2018-09-14 16:00:18,810 INFO L226 Difference]: Without dead ends: 960 [2018-09-14 16:00:18,814 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 16:00:18,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2018-09-14 16:00:18,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 946. [2018-09-14 16:00:18,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 946 states. [2018-09-14 16:00:18,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1557 transitions. [2018-09-14 16:00:18,872 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1557 transitions. Word has length 218 [2018-09-14 16:00:18,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:00:18,873 INFO L480 AbstractCegarLoop]: Abstraction has 946 states and 1557 transitions. [2018-09-14 16:00:18,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:00:18,873 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1557 transitions. [2018-09-14 16:00:18,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-09-14 16:00:18,883 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:00:18,883 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2018-09-14 16:00:18,884 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:00:18,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1141936112, now seen corresponding path program 1 times [2018-09-14 16:00:18,885 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:00:18,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:18,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:18,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:18,886 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:00:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:19,419 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:00:19,419 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:00:19,419 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 16:00:19,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:19,438 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:00:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:19,670 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:00:20,057 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:00:20,058 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:00:20,413 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:00:20,434 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:00:20,435 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 3 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 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:00:20,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:20,457 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:00:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:20,901 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:00:21,496 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:00:21,496 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:00:21,649 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:00:21,652 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:00:21,652 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 18 [2018-09-14 16:00:21,652 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:00:21,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 16:00:21,654 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 16:00:21,655 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2018-09-14 16:00:21,655 INFO L87 Difference]: Start difference. First operand 946 states and 1557 transitions. Second operand 9 states. [2018-09-14 16:00:34,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:00:34,312 INFO L93 Difference]: Finished difference Result 9199 states and 19706 transitions. [2018-09-14 16:00:34,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-14 16:00:34,313 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 229 [2018-09-14 16:00:34,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:00:34,423 INFO L225 Difference]: With dead ends: 9199 [2018-09-14 16:00:34,423 INFO L226 Difference]: Without dead ends: 8259 [2018-09-14 16:00:34,464 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 976 GetRequests, 932 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=373, Invalid=1697, Unknown=0, NotChecked=0, Total=2070 [2018-09-14 16:00:34,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8259 states. [2018-09-14 16:00:34,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8259 to 7890. [2018-09-14 16:00:34,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7890 states. [2018-09-14 16:00:34,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7890 states to 7890 states and 12605 transitions. [2018-09-14 16:00:34,858 INFO L78 Accepts]: Start accepts. Automaton has 7890 states and 12605 transitions. Word has length 229 [2018-09-14 16:00:34,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:00:34,859 INFO L480 AbstractCegarLoop]: Abstraction has 7890 states and 12605 transitions. [2018-09-14 16:00:34,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 16:00:34,859 INFO L276 IsEmpty]: Start isEmpty. Operand 7890 states and 12605 transitions. [2018-09-14 16:00:34,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-09-14 16:00:34,911 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:00:34,912 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1] [2018-09-14 16:00:34,912 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:00:34,912 INFO L82 PathProgramCache]: Analyzing trace with hash -2142055738, now seen corresponding path program 1 times [2018-09-14 16:00:34,912 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:00:34,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:34,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:34,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:34,914 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:00:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:35,172 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:00:35,317 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:00:35,318 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:00:35,318 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 16:00:35,318 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:00:35,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:00:35,319 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:00:35,319 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 16:00:35,319 INFO L87 Difference]: Start difference. First operand 7890 states and 12605 transitions. Second operand 6 states. [2018-09-14 16:00:37,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:00:37,402 INFO L93 Difference]: Finished difference Result 13791 states and 22807 transitions. [2018-09-14 16:00:37,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:00:37,402 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 230 [2018-09-14 16:00:37,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:00:37,470 INFO L225 Difference]: With dead ends: 13791 [2018-09-14 16:00:37,471 INFO L226 Difference]: Without dead ends: 8507 [2018-09-14 16:00:37,502 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 16:00:37,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8507 states. [2018-09-14 16:00:37,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8507 to 8337. [2018-09-14 16:00:37,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8337 states. [2018-09-14 16:00:37,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8337 states to 8337 states and 12690 transitions. [2018-09-14 16:00:37,835 INFO L78 Accepts]: Start accepts. Automaton has 8337 states and 12690 transitions. Word has length 230 [2018-09-14 16:00:37,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:00:37,836 INFO L480 AbstractCegarLoop]: Abstraction has 8337 states and 12690 transitions. [2018-09-14 16:00:37,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:00:37,836 INFO L276 IsEmpty]: Start isEmpty. Operand 8337 states and 12690 transitions. [2018-09-14 16:00:37,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-09-14 16:00:37,893 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:00:37,893 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 16:00:37,894 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:00:37,894 INFO L82 PathProgramCache]: Analyzing trace with hash -731091438, now seen corresponding path program 1 times [2018-09-14 16:00:37,894 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:00:37,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:37,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:37,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:37,896 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:00:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:38,328 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:00:38,328 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:00:38,328 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 16:00:38,328 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:00:38,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:00:38,329 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:00:38,329 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 16:00:38,330 INFO L87 Difference]: Start difference. First operand 8337 states and 12690 transitions. Second operand 6 states. [2018-09-14 16:00:41,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:00:41,393 INFO L93 Difference]: Finished difference Result 18473 states and 29031 transitions. [2018-09-14 16:00:41,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:00:41,395 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 292 [2018-09-14 16:00:41,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:00:41,451 INFO L225 Difference]: With dead ends: 18473 [2018-09-14 16:00:41,451 INFO L226 Difference]: Without dead ends: 10152 [2018-09-14 16:00:41,478 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 16:00:41,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10152 states. [2018-09-14 16:00:41,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10152 to 10025. [2018-09-14 16:00:41,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10025 states. [2018-09-14 16:00:41,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10025 states to 10025 states and 14397 transitions. [2018-09-14 16:00:41,793 INFO L78 Accepts]: Start accepts. Automaton has 10025 states and 14397 transitions. Word has length 292 [2018-09-14 16:00:41,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:00:41,794 INFO L480 AbstractCegarLoop]: Abstraction has 10025 states and 14397 transitions. [2018-09-14 16:00:41,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:00:41,794 INFO L276 IsEmpty]: Start isEmpty. Operand 10025 states and 14397 transitions. [2018-09-14 16:00:41,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-09-14 16:00:41,852 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:00:41,853 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, 2, 2, 2, 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 16:00:41,853 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:00:41,853 INFO L82 PathProgramCache]: Analyzing trace with hash 490182653, now seen corresponding path program 1 times [2018-09-14 16:00:41,853 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:00:41,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:41,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:41,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:41,855 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:00:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:42,206 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:00:42,627 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 88 proven. 30 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:00:42,627 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:00:42,627 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 16:00:42,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:42,641 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:00:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:42,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:00:43,351 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-09-14 16:00:43,352 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:00:43,750 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 88 proven. 30 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:00:43,771 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:00:43,771 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-14 16:00:43,772 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:00:43,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:00:43,773 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:00:43,773 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-14 16:00:43,773 INFO L87 Difference]: Start difference. First operand 10025 states and 14397 transitions. Second operand 5 states. [2018-09-14 16:00:46,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:00:46,207 INFO L93 Difference]: Finished difference Result 26942 states and 38884 transitions. [2018-09-14 16:00:46,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:00:46,208 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 299 [2018-09-14 16:00:46,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:00:46,273 INFO L225 Difference]: With dead ends: 26942 [2018-09-14 16:00:46,273 INFO L226 Difference]: Without dead ends: 16983 [2018-09-14 16:00:46,294 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 592 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-09-14 16:00:46,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16983 states. [2018-09-14 16:00:46,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16983 to 16345. [2018-09-14 16:00:46,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16345 states. [2018-09-14 16:00:46,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16345 states to 16345 states and 22869 transitions. [2018-09-14 16:00:46,707 INFO L78 Accepts]: Start accepts. Automaton has 16345 states and 22869 transitions. Word has length 299 [2018-09-14 16:00:46,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:00:46,707 INFO L480 AbstractCegarLoop]: Abstraction has 16345 states and 22869 transitions. [2018-09-14 16:00:46,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:00:46,708 INFO L276 IsEmpty]: Start isEmpty. Operand 16345 states and 22869 transitions. [2018-09-14 16:00:46,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-09-14 16:00:46,750 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:00:46,750 INFO L376 BasicCegarLoop]: trace histogram [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, 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] [2018-09-14 16:00:46,750 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:00:46,751 INFO L82 PathProgramCache]: Analyzing trace with hash 60834809, now seen corresponding path program 1 times [2018-09-14 16:00:46,751 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:00:46,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:46,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:46,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:46,752 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:00:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:47,093 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 114 proven. 34 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-09-14 16:00:47,094 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:00:47,094 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:00:47,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:47,103 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:00:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:47,328 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:00:47,543 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-09-14 16:00:47,543 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:00:47,888 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-09-14 16:00:47,908 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 16:00:47,909 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-09-14 16:00:47,909 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:00:47,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:00:47,910 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:00:47,910 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-14 16:00:47,910 INFO L87 Difference]: Start difference. First operand 16345 states and 22869 transitions. Second operand 3 states. [2018-09-14 16:00:49,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:00:49,941 INFO L93 Difference]: Finished difference Result 47329 states and 66708 transitions. [2018-09-14 16:00:49,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:00:49,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 312 [2018-09-14 16:00:49,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:00:50,054 INFO L225 Difference]: With dead ends: 47329 [2018-09-14 16:00:50,054 INFO L226 Difference]: Without dead ends: 30995 [2018-09-14 16:00:50,100 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 622 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 16:00:50,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30995 states. [2018-09-14 16:00:50,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30995 to 30989. [2018-09-14 16:00:50,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30989 states. [2018-09-14 16:00:51,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30989 states to 30989 states and 41885 transitions. [2018-09-14 16:00:51,044 INFO L78 Accepts]: Start accepts. Automaton has 30989 states and 41885 transitions. Word has length 312 [2018-09-14 16:00:51,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:00:51,045 INFO L480 AbstractCegarLoop]: Abstraction has 30989 states and 41885 transitions. [2018-09-14 16:00:51,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:00:51,045 INFO L276 IsEmpty]: Start isEmpty. Operand 30989 states and 41885 transitions. [2018-09-14 16:00:51,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-09-14 16:00:51,118 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:00:51,118 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 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] [2018-09-14 16:00:51,119 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:00:51,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1233071546, now seen corresponding path program 1 times [2018-09-14 16:00:51,119 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:00:51,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:51,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:51,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:51,120 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:00:51,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:51,646 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 130 proven. 22 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-09-14 16:00:51,646 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:00:51,647 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 16:00:51,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:51,664 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:00:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:51,889 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:00:52,017 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-09-14 16:00:52,017 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:00:52,143 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 114 proven. 16 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-09-14 16:00:52,165 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:00:52,165 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-14 16:00:52,165 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:00:52,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:00:52,166 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:00:52,166 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-09-14 16:00:52,166 INFO L87 Difference]: Start difference. First operand 30989 states and 41885 transitions. Second operand 5 states. [2018-09-14 16:00:54,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:00:54,743 INFO L93 Difference]: Finished difference Result 82306 states and 116882 transitions. [2018-09-14 16:00:54,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:00:54,744 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2018-09-14 16:00:54,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:00:55,398 INFO L225 Difference]: With dead ends: 82306 [2018-09-14 16:00:55,399 INFO L226 Difference]: Without dead ends: 51378 [2018-09-14 16:00:55,467 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-09-14 16:00:55,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51378 states. [2018-09-14 16:00:56,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51378 to 50210. [2018-09-14 16:00:56,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50210 states. [2018-09-14 16:00:56,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50210 states to 50210 states and 66925 transitions. [2018-09-14 16:00:56,792 INFO L78 Accepts]: Start accepts. Automaton has 50210 states and 66925 transitions. Word has length 330 [2018-09-14 16:00:56,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:00:56,792 INFO L480 AbstractCegarLoop]: Abstraction has 50210 states and 66925 transitions. [2018-09-14 16:00:56,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:00:56,792 INFO L276 IsEmpty]: Start isEmpty. Operand 50210 states and 66925 transitions. [2018-09-14 16:00:56,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-09-14 16:00:56,893 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:00:56,893 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:00:56,893 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:00:56,894 INFO L82 PathProgramCache]: Analyzing trace with hash -2134681585, now seen corresponding path program 1 times [2018-09-14 16:00:56,894 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:00:56,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:56,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:56,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:00:56,895 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:00:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:57,394 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 148 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-09-14 16:00:57,394 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:00:57,395 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:00:57,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:57,403 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:00:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:57,624 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:00:57,686 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 16:00:57,686 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:00:57,843 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 148 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-09-14 16:00:57,865 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:00:57,865 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 8 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:00:57,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:00:57,882 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:00:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:00:58,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:00:58,887 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 84 proven. 21 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 16:00:58,887 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:00:59,069 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 148 proven. 37 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:00:59,076 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:00:59,077 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 7, 8] total 12 [2018-09-14 16:00:59,077 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:00:59,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:00:59,077 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:00:59,078 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-14 16:00:59,078 INFO L87 Difference]: Start difference. First operand 50210 states and 66925 transitions. Second operand 6 states. [2018-09-14 16:01:00,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:01:00,383 INFO L93 Difference]: Finished difference Result 97026 states and 128862 transitions. [2018-09-14 16:01:00,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-14 16:01:00,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 339 [2018-09-14 16:01:00,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:01:00,505 INFO L225 Difference]: With dead ends: 97026 [2018-09-14 16:01:00,505 INFO L226 Difference]: Without dead ends: 46917 [2018-09-14 16:01:00,576 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1362 GetRequests, 1346 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2018-09-14 16:01:00,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46917 states. [2018-09-14 16:01:01,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46917 to 46917. [2018-09-14 16:01:01,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46917 states. [2018-09-14 16:01:01,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46917 states to 46917 states and 61447 transitions. [2018-09-14 16:01:01,526 INFO L78 Accepts]: Start accepts. Automaton has 46917 states and 61447 transitions. Word has length 339 [2018-09-14 16:01:01,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:01:01,527 INFO L480 AbstractCegarLoop]: Abstraction has 46917 states and 61447 transitions. [2018-09-14 16:01:01,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:01:01,527 INFO L276 IsEmpty]: Start isEmpty. Operand 46917 states and 61447 transitions. [2018-09-14 16:01:01,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-09-14 16:01:01,624 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:01:01,625 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, 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] [2018-09-14 16:01:01,625 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:01:01,625 INFO L82 PathProgramCache]: Analyzing trace with hash -770166786, now seen corresponding path program 1 times [2018-09-14 16:01:01,625 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:01:01,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:01,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:01,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:01,627 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:01:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:01,989 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:01:02,662 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 157 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:01:02,662 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:01:02,663 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:01:02,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:02,688 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:01:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:02,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:01:03,201 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 16:01:03,201 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:01:04,019 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 157 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:01:04,041 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:01:04,042 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-09-14 16:01:04,042 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:01:04,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:01:04,043 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:01:04,043 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-09-14 16:01:04,043 INFO L87 Difference]: Start difference. First operand 46917 states and 61447 transitions. Second operand 6 states. [2018-09-14 16:01:06,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:01:06,590 INFO L93 Difference]: Finished difference Result 95874 states and 126835 transitions. [2018-09-14 16:01:06,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 16:01:06,590 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 370 [2018-09-14 16:01:06,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:01:06,752 INFO L225 Difference]: With dead ends: 95874 [2018-09-14 16:01:06,752 INFO L226 Difference]: Without dead ends: 48739 [2018-09-14 16:01:06,868 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 732 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2018-09-14 16:01:06,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48739 states. [2018-09-14 16:01:07,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48739 to 47437. [2018-09-14 16:01:07,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47437 states. [2018-09-14 16:01:07,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47437 states to 47437 states and 61854 transitions. [2018-09-14 16:01:07,945 INFO L78 Accepts]: Start accepts. Automaton has 47437 states and 61854 transitions. Word has length 370 [2018-09-14 16:01:07,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:01:07,946 INFO L480 AbstractCegarLoop]: Abstraction has 47437 states and 61854 transitions. [2018-09-14 16:01:07,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:01:07,946 INFO L276 IsEmpty]: Start isEmpty. Operand 47437 states and 61854 transitions. [2018-09-14 16:01:08,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-09-14 16:01:08,049 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:01:08,049 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, 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] [2018-09-14 16:01:08,049 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:01:08,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1846698863, now seen corresponding path program 1 times [2018-09-14 16:01:08,050 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:01:08,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:08,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:08,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:08,051 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:01:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:08,356 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 4 [2018-09-14 16:01:08,670 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-14 16:01:08,777 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 161 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:01:08,777 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:01:08,778 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 16:01:08,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:08,787 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:01:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:09,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:01:10,086 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 16:01:10,087 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:01:10,575 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 161 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:01:10,606 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:01:10,606 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 16:01:10,606 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:01:10,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:01:10,607 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:01:10,607 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-09-14 16:01:10,608 INFO L87 Difference]: Start difference. First operand 47437 states and 61854 transitions. Second operand 5 states. [2018-09-14 16:01:12,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:01:12,803 INFO L93 Difference]: Finished difference Result 94757 states and 124658 transitions. [2018-09-14 16:01:12,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 16:01:12,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 372 [2018-09-14 16:01:12,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:01:12,942 INFO L225 Difference]: With dead ends: 94757 [2018-09-14 16:01:12,942 INFO L226 Difference]: Without dead ends: 47336 [2018-09-14 16:01:13,022 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 739 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-09-14 16:01:13,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47336 states. [2018-09-14 16:01:13,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47336 to 46983. [2018-09-14 16:01:13,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46983 states. [2018-09-14 16:01:13,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46983 states to 46983 states and 59983 transitions. [2018-09-14 16:01:13,840 INFO L78 Accepts]: Start accepts. Automaton has 46983 states and 59983 transitions. Word has length 372 [2018-09-14 16:01:13,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:01:13,840 INFO L480 AbstractCegarLoop]: Abstraction has 46983 states and 59983 transitions. [2018-09-14 16:01:13,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:01:13,840 INFO L276 IsEmpty]: Start isEmpty. Operand 46983 states and 59983 transitions. [2018-09-14 16:01:13,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2018-09-14 16:01:13,908 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:01:13,909 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:13,909 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:01:13,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1991145764, now seen corresponding path program 1 times [2018-09-14 16:01:13,909 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:01:13,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:13,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:13,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:13,910 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:01:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:14,566 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 265 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:01:14,566 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:01:14,566 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:01:14,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:14,575 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:01:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:14,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:01:14,960 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 16:01:14,960 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:01:15,242 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 38 [2018-09-14 16:01:15,939 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 180 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:01:15,961 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:01:15,961 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 16:01:15,961 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:01:15,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:01:15,962 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:01:15,962 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-09-14 16:01:15,962 INFO L87 Difference]: Start difference. First operand 46983 states and 59983 transitions. Second operand 5 states. [2018-09-14 16:01:17,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:01:17,848 INFO L93 Difference]: Finished difference Result 77252 states and 98150 transitions. [2018-09-14 16:01:17,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 16:01:17,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 391 [2018-09-14 16:01:17,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:01:17,969 INFO L225 Difference]: With dead ends: 77252 [2018-09-14 16:01:17,970 INFO L226 Difference]: Without dead ends: 41151 [2018-09-14 16:01:18,030 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 778 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-09-14 16:01:18,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41151 states. [2018-09-14 16:01:18,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41151 to 40616. [2018-09-14 16:01:18,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40616 states. [2018-09-14 16:01:18,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40616 states to 40616 states and 49780 transitions. [2018-09-14 16:01:18,685 INFO L78 Accepts]: Start accepts. Automaton has 40616 states and 49780 transitions. Word has length 391 [2018-09-14 16:01:18,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:01:18,686 INFO L480 AbstractCegarLoop]: Abstraction has 40616 states and 49780 transitions. [2018-09-14 16:01:18,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:01:18,686 INFO L276 IsEmpty]: Start isEmpty. Operand 40616 states and 49780 transitions. [2018-09-14 16:01:18,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-09-14 16:01:18,740 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:01:18,740 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:18,740 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:01:18,741 INFO L82 PathProgramCache]: Analyzing trace with hash 61775672, now seen corresponding path program 1 times [2018-09-14 16:01:18,741 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:01:18,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:18,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:18,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:18,742 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:01:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:19,110 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 267 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:01:19,110 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:01:19,110 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 16:01:19,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:19,118 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:01:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:19,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:01:19,471 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 267 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:01:19,472 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:01:19,612 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 267 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:01:19,633 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:01:19,633 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 16:01:19,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:19,649 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:01:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:20,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:01:20,375 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 267 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:01:20,375 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:01:20,652 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 267 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:01:20,654 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:01:20,655 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 6] total 15 [2018-09-14 16:01:20,655 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:01:20,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:01:20,656 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:01:20,656 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2018-09-14 16:01:20,657 INFO L87 Difference]: Start difference. First operand 40616 states and 49780 transitions. Second operand 6 states. [2018-09-14 16:01:23,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:01:23,730 INFO L93 Difference]: Finished difference Result 93126 states and 117115 transitions. [2018-09-14 16:01:23,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 16:01:23,730 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 393 [2018-09-14 16:01:23,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:01:23,902 INFO L225 Difference]: With dead ends: 93126 [2018-09-14 16:01:23,902 INFO L226 Difference]: Without dead ends: 52526 [2018-09-14 16:01:23,983 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1582 GetRequests, 1564 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2018-09-14 16:01:24,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52526 states. [2018-09-14 16:01:24,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52526 to 51844. [2018-09-14 16:01:24,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51844 states. [2018-09-14 16:01:24,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51844 states to 51844 states and 61912 transitions. [2018-09-14 16:01:24,776 INFO L78 Accepts]: Start accepts. Automaton has 51844 states and 61912 transitions. Word has length 393 [2018-09-14 16:01:24,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:01:24,777 INFO L480 AbstractCegarLoop]: Abstraction has 51844 states and 61912 transitions. [2018-09-14 16:01:24,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:01:24,777 INFO L276 IsEmpty]: Start isEmpty. Operand 51844 states and 61912 transitions. [2018-09-14 16:01:24,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-09-14 16:01:24,833 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:01:24,833 INFO L376 BasicCegarLoop]: trace histogram [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, 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] [2018-09-14 16:01:24,833 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:01:24,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1932235547, now seen corresponding path program 1 times [2018-09-14 16:01:24,834 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:01:24,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:24,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:24,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:24,835 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:01:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:25,245 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 200 proven. 8 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 16:01:25,245 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:01:25,245 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 16:01:25,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:25,253 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:01:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:25,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:01:25,850 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-14 16:01:25,915 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 16:01:25,916 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:01:26,250 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 200 proven. 8 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 16:01:26,273 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:01:26,273 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 15 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 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:01:26,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:26,289 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:01:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:26,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:01:27,251 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 279 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:01:27,252 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:01:27,912 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 285 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:01:27,916 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:01:27,916 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 9, 8] total 20 [2018-09-14 16:01:27,916 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:01:27,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:01:27,917 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:01:27,918 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2018-09-14 16:01:27,918 INFO L87 Difference]: Start difference. First operand 51844 states and 61912 transitions. Second operand 6 states. [2018-09-14 16:01:31,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:01:31,636 INFO L93 Difference]: Finished difference Result 94701 states and 123972 transitions. [2018-09-14 16:01:31,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 16:01:31,636 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 404 [2018-09-14 16:01:31,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:01:31,827 INFO L225 Difference]: With dead ends: 94701 [2018-09-14 16:01:31,827 INFO L226 Difference]: Without dead ends: 56549 [2018-09-14 16:01:31,892 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1629 GetRequests, 1605 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2018-09-14 16:01:31,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56549 states. [2018-09-14 16:01:32,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56549 to 53877. [2018-09-14 16:01:32,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53877 states. [2018-09-14 16:01:32,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53877 states to 53877 states and 64278 transitions. [2018-09-14 16:01:32,856 INFO L78 Accepts]: Start accepts. Automaton has 53877 states and 64278 transitions. Word has length 404 [2018-09-14 16:01:32,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:01:32,857 INFO L480 AbstractCegarLoop]: Abstraction has 53877 states and 64278 transitions. [2018-09-14 16:01:32,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:01:32,857 INFO L276 IsEmpty]: Start isEmpty. Operand 53877 states and 64278 transitions. [2018-09-14 16:01:32,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-09-14 16:01:32,935 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:01:32,935 INFO L376 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:32,936 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:01:32,936 INFO L82 PathProgramCache]: Analyzing trace with hash 491691245, now seen corresponding path program 1 times [2018-09-14 16:01:32,936 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:01:32,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:32,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:32,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:32,937 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:01:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:33,644 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 309 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-09-14 16:01:33,644 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:01:33,644 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 16:01:33,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:33,653 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:01:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:33,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:01:34,372 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 243 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 16:01:34,373 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:01:34,692 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2018-09-14 16:01:35,228 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 224 proven. 86 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-09-14 16:01:35,251 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:01:35,252 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 16:01:35,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:35,271 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:01:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:35,880 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:01:36,284 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 286 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:01:36,284 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:01:36,767 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 212 proven. 99 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-09-14 16:01:36,770 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:01:36,771 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 10, 8] total 22 [2018-09-14 16:01:36,771 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:01:36,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 16:01:36,772 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 16:01:36,772 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2018-09-14 16:01:36,772 INFO L87 Difference]: Start difference. First operand 53877 states and 64278 transitions. Second operand 9 states. [2018-09-14 16:01:51,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:01:51,197 INFO L93 Difference]: Finished difference Result 144816 states and 200400 transitions. [2018-09-14 16:01:51,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-09-14 16:01:51,197 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 413 [2018-09-14 16:01:51,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:01:51,694 INFO L225 Difference]: With dead ends: 144816 [2018-09-14 16:01:51,695 INFO L226 Difference]: Without dead ends: 91180 [2018-09-14 16:01:51,815 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1760 GetRequests, 1681 SyntacticMatches, 4 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1689 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=918, Invalid=4934, Unknown=0, NotChecked=0, Total=5852 [2018-09-14 16:01:51,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91180 states. [2018-09-14 16:01:54,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91180 to 85128. [2018-09-14 16:01:54,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85128 states. [2018-09-14 16:01:54,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85128 states to 85128 states and 99663 transitions. [2018-09-14 16:01:54,183 INFO L78 Accepts]: Start accepts. Automaton has 85128 states and 99663 transitions. Word has length 413 [2018-09-14 16:01:54,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:01:54,183 INFO L480 AbstractCegarLoop]: Abstraction has 85128 states and 99663 transitions. [2018-09-14 16:01:54,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 16:01:54,184 INFO L276 IsEmpty]: Start isEmpty. Operand 85128 states and 99663 transitions. [2018-09-14 16:01:54,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-09-14 16:01:54,276 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:01:54,277 INFO L376 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-09-14 16:01:54,277 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:01:54,277 INFO L82 PathProgramCache]: Analyzing trace with hash -2041482561, now seen corresponding path program 1 times [2018-09-14 16:01:54,277 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:01:54,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:54,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:54,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:01:54,278 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:01:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:54,636 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-09-14 16:01:54,781 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 222 proven. 100 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:01:54,781 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:01:54,781 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:01:54,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:01:54,788 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:01:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:01:55,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:01:55,428 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-14 16:01:55,428 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:01:55,721 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 16:01:55,955 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 224 proven. 89 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-14 16:01:55,977 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:01:55,978 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 5] total 14 [2018-09-14 16:01:55,978 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:01:55,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:01:55,978 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:01:55,978 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2018-09-14 16:01:55,979 INFO L87 Difference]: Start difference. First operand 85128 states and 99663 transitions. Second operand 5 states. [2018-09-14 16:01:58,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:01:58,195 INFO L93 Difference]: Finished difference Result 188970 states and 225368 transitions. [2018-09-14 16:01:58,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 16:01:58,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 432 [2018-09-14 16:01:58,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:01:59,161 INFO L225 Difference]: With dead ends: 188970 [2018-09-14 16:01:59,162 INFO L226 Difference]: Without dead ends: 112241 [2018-09-14 16:01:59,239 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 856 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-09-14 16:01:59,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112241 states. [2018-09-14 16:02:00,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112241 to 110727. [2018-09-14 16:02:00,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110727 states. [2018-09-14 16:02:01,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110727 states to 110727 states and 128797 transitions. [2018-09-14 16:02:01,058 INFO L78 Accepts]: Start accepts. Automaton has 110727 states and 128797 transitions. Word has length 432 [2018-09-14 16:02:01,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:02:01,058 INFO L480 AbstractCegarLoop]: Abstraction has 110727 states and 128797 transitions. [2018-09-14 16:02:01,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:02:01,058 INFO L276 IsEmpty]: Start isEmpty. Operand 110727 states and 128797 transitions. [2018-09-14 16:02:01,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2018-09-14 16:02:01,145 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:02:01,145 INFO L376 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-09-14 16:02:01,145 INFO L423 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:02:01,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1771213995, now seen corresponding path program 1 times [2018-09-14 16:02:01,146 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:02:01,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:02:01,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:02:01,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:02:01,147 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:02:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:02:01,697 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 264 proven. 86 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-09-14 16:02:01,698 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:02:01,698 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:02:01,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:02:01,705 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:02:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:02:01,965 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:02:02,091 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-09-14 16:02:02,091 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:02:02,262 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-09-14 16:02:02,869 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:02:02,869 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 20 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 20 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:02:02,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:02:02,885 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:02:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:02:03,539 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:02:03,683 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 326 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:02:03,683 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:02:04,008 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-09-14 16:02:04,011 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:02:04,011 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 5] total 17 [2018-09-14 16:02:04,011 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:02:04,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 16:02:04,012 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 16:02:04,012 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2018-09-14 16:02:04,013 INFO L87 Difference]: Start difference. First operand 110727 states and 128797 transitions. Second operand 9 states. [2018-09-14 16:02:22,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:02:22,181 INFO L93 Difference]: Finished difference Result 411334 states and 533145 transitions. [2018-09-14 16:02:22,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-14 16:02:22,181 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 455 [2018-09-14 16:02:22,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:02:23,246 INFO L225 Difference]: With dead ends: 411334 [2018-09-14 16:02:23,246 INFO L226 Difference]: Without dead ends: 280129 [2018-09-14 16:02:23,538 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1882 GetRequests, 1836 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=365, Invalid=1797, Unknown=0, NotChecked=0, Total=2162 [2018-09-14 16:02:23,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280129 states. [2018-09-14 16:02:34,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280129 to 263850. [2018-09-14 16:02:34,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263850 states. [2018-09-14 16:02:34,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263850 states to 263850 states and 299481 transitions. [2018-09-14 16:02:34,805 INFO L78 Accepts]: Start accepts. Automaton has 263850 states and 299481 transitions. Word has length 455 [2018-09-14 16:02:34,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:02:34,806 INFO L480 AbstractCegarLoop]: Abstraction has 263850 states and 299481 transitions. [2018-09-14 16:02:34,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 16:02:34,806 INFO L276 IsEmpty]: Start isEmpty. Operand 263850 states and 299481 transitions. [2018-09-14 16:02:35,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2018-09-14 16:02:35,028 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:02:35,028 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-09-14 16:02:35,029 INFO L423 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:02:35,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1361796262, now seen corresponding path program 1 times [2018-09-14 16:02:35,029 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:02:35,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:02:35,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:02:35,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:02:35,030 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:02:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:02:35,935 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 328 proven. 151 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-09-14 16:02:35,936 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:02:35,936 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:02:35,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:02:35,945 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:02:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:02:36,228 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:02:36,374 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2018-09-14 16:02:36,374 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:02:36,709 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 246 proven. 84 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-09-14 16:02:36,732 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:02:36,733 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 5] total 15 [2018-09-14 16:02:36,733 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:02:36,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:02:36,733 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:02:36,734 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2018-09-14 16:02:36,734 INFO L87 Difference]: Start difference. First operand 263850 states and 299481 transitions. Second operand 5 states. [2018-09-14 16:02:43,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:02:43,921 INFO L93 Difference]: Finished difference Result 577752 states and 651333 transitions. [2018-09-14 16:02:43,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 16:02:43,922 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 463 [2018-09-14 16:02:43,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:02:45,910 INFO L225 Difference]: With dead ends: 577752 [2018-09-14 16:02:45,910 INFO L226 Difference]: Without dead ends: 347182 [2018-09-14 16:02:46,173 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 938 GetRequests, 920 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-09-14 16:02:46,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347182 states. [2018-09-14 16:02:52,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347182 to 345982. [2018-09-14 16:02:52,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345982 states. [2018-09-14 16:02:53,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345982 states to 345982 states and 387376 transitions. [2018-09-14 16:02:53,917 INFO L78 Accepts]: Start accepts. Automaton has 345982 states and 387376 transitions. Word has length 463 [2018-09-14 16:02:53,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:02:53,917 INFO L480 AbstractCegarLoop]: Abstraction has 345982 states and 387376 transitions. [2018-09-14 16:02:53,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:02:53,917 INFO L276 IsEmpty]: Start isEmpty. Operand 345982 states and 387376 transitions. [2018-09-14 16:02:54,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2018-09-14 16:02:54,164 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:02:54,164 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:02:54,165 INFO L423 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:02:54,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1658436348, now seen corresponding path program 1 times [2018-09-14 16:02:54,165 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:02:54,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:02:54,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:02:54,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:02:54,166 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:02:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:02:54,562 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 317 proven. 30 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-09-14 16:02:54,562 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:02:54,562 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:02:54,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:02:54,571 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:02:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:02:54,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:02:55,038 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 328 proven. 6 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-14 16:02:55,039 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:02:55,374 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 295 proven. 114 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-09-14 16:02:55,397 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:02:55,397 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 23 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 23 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:02:55,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:02:55,412 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:02:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:02:56,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:02:57,261 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 328 proven. 6 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-14 16:02:57,261 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:02:57,522 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 295 proven. 114 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-09-14 16:02:57,526 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:02:57,526 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-14 16:02:57,526 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:02:57,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 16:02:57,527 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 16:02:57,528 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-14 16:02:57,528 INFO L87 Difference]: Start difference. First operand 345982 states and 387376 transitions. Second operand 9 states. [2018-09-14 16:03:22,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:03:22,630 INFO L93 Difference]: Finished difference Result 594802 states and 718893 transitions. [2018-09-14 16:03:22,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-14 16:03:22,630 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 480 [2018-09-14 16:03:22,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:03:23,788 INFO L225 Difference]: With dead ends: 594802 [2018-09-14 16:03:23,788 INFO L226 Difference]: Without dead ends: 242933 [2018-09-14 16:03:24,287 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1985 GetRequests, 1934 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=441, Invalid=1911, Unknown=0, NotChecked=0, Total=2352 [2018-09-14 16:03:24,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242933 states. [2018-09-14 16:03:29,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242933 to 218933. [2018-09-14 16:03:29,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218933 states. [2018-09-14 16:03:30,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218933 states to 218933 states and 237697 transitions. [2018-09-14 16:03:30,171 INFO L78 Accepts]: Start accepts. Automaton has 218933 states and 237697 transitions. Word has length 480 [2018-09-14 16:03:30,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:03:30,171 INFO L480 AbstractCegarLoop]: Abstraction has 218933 states and 237697 transitions. [2018-09-14 16:03:30,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 16:03:30,171 INFO L276 IsEmpty]: Start isEmpty. Operand 218933 states and 237697 transitions. [2018-09-14 16:03:30,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2018-09-14 16:03:30,317 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:03:30,317 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-09-14 16:03:30,317 INFO L423 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:03:30,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1871238712, now seen corresponding path program 1 times [2018-09-14 16:03:30,318 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:03:30,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:03:30,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:03:30,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:03:30,319 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:03:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:03:30,891 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 372 proven. 126 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 16:03:30,892 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:03:30,892 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:03:30,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:03:30,901 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:03:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:03:31,212 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:03:31,431 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 428 proven. 2 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2018-09-14 16:03:31,431 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:03:32,632 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 339 proven. 91 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2018-09-14 16:03:32,654 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:03:32,654 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 25 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 25 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:03:32,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:03:32,670 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:03:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:03:33,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:03:33,577 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 435 proven. 10 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-09-14 16:03:33,577 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:03:33,905 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 352 proven. 34 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2018-09-14 16:03:33,908 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:03:33,908 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 6, 5] total 19 [2018-09-14 16:03:33,909 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:03:33,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-14 16:03:33,909 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-14 16:03:33,910 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2018-09-14 16:03:33,910 INFO L87 Difference]: Start difference. First operand 218933 states and 237697 transitions. Second operand 14 states. [2018-09-14 16:03:41,343 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 15 Received shutdown request... [2018-09-14 16:03:42,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-09-14 16:03:42,367 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 16:03:42,374 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 16:03:42,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 04:03:42 BoogieIcfgContainer [2018-09-14 16:03:42,374 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 16:03:42,375 INFO L168 Benchmark]: Toolchain (without parser) took 217330.54 ms. Allocated memory was 1.5 GB in the beginning and 5.8 GB in the end (delta: 4.3 GB). Free memory was 1.4 GB in the beginning and 3.8 GB in the end (delta: -2.4 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-09-14 16:03:42,376 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 16:03:42,377 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1042.99 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 16:03:42,378 INFO L168 Benchmark]: Boogie Procedure Inliner took 154.52 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 16:03:42,378 INFO L168 Benchmark]: Boogie Preprocessor took 387.34 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 807.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -942.9 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. [2018-09-14 16:03:42,379 INFO L168 Benchmark]: RCFGBuilder took 4819.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 259.9 MB). Peak memory consumption was 259.9 MB. Max. memory is 7.1 GB. [2018-09-14 16:03:42,380 INFO L168 Benchmark]: TraceAbstraction took 210919.33 ms. Allocated memory was 2.3 GB in the beginning and 5.8 GB in the end (delta: 3.5 GB). Free memory was 2.0 GB in the beginning and 3.8 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-09-14 16:03:42,384 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1042.99 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 154.52 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 387.34 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 807.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -942.9 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4819.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 259.9 MB). Peak memory consumption was 259.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210919.33 ms. Allocated memory was 2.3 GB in the beginning and 5.8 GB in the end (delta: 3.5 GB). Free memory was 2.0 GB in the beginning and 3.8 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1629]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1629). Cancelled while BasicCegarLoop was constructing difference of abstraction (218933states) and FLOYD_HOARE automaton (currently 75 states, 14 states before enhancement), while ReachableStatesComputation was computing reachable states (9489 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 210.8s OverallTime, 20 OverallIterations, 5 TraceHistogramMax, 130.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4016 SDtfs, 25142 SDslu, 6355 SDs, 0 SdLazy, 51286 SolverSat, 8201 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 59.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19310 GetRequests, 18810 SyntacticMatches, 40 SemanticMatches, 460 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6390 ImplicationChecksByTransitivity, 18.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=345982occurred in iteration=18, 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: 38.1s AutomataMinimizationTime, 19 MinimizatonAttempts, 57292 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.6s SsaConstructionTime, 8.0s SatisfiabilityAnalysisTime, 27.5s InterpolantComputationTime, 16486 NumberOfCodeBlocks, 16486 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 25789 ConstructedInterpolants, 0 QuantifiedInterpolants, 26292956 SizeOfPredicates, 93 NumberOfNonLiveVariables, 32291 ConjunctsInSsa, 282 ConjunctsInUnsatCore, 68 InterpolantComputations, 13 PerfectInterpolantSequences, 16745/18743 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_label04_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_16-03-42-398.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label04_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_16-03-42-398.csv Completed graceful shutdown