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/Problem14_label09_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:47:56,286 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:47:56,289 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:47:56,308 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:47:56,308 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:47:56,309 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:47:56,311 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:47:56,313 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:47:56,315 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:47:56,316 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:47:56,317 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:47:56,317 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:47:56,318 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:47:56,319 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:47:56,320 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:47:56,321 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:47:56,322 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:47:56,324 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:47:56,325 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:47:56,327 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:47:56,328 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:47:56,329 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:47:56,332 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 11:47:56,332 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 11:47:56,332 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 11:47:56,333 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 11:47:56,334 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 11:47:56,335 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 11:47:56,336 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 11:47:56,337 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 11:47:56,337 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 11:47:56,338 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 11:47:56,338 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:47:56,338 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:47:56,339 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:47:56,340 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:47:56,340 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 [2018-09-18 11:47:56,362 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:47:56,363 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:47:56,364 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:47:56,364 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:47:56,364 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:47:56,364 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:47:56,367 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:47:56,367 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:47:56,367 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:47:56,367 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:47:56,368 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:47:56,368 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:47:56,369 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:47:56,369 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:47:56,369 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:47:56,369 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:47:56,369 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:47:56,370 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:47:56,370 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:47:56,370 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:47:56,371 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:47:56,371 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:47:56,371 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:47:56,371 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:47:56,371 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:47:56,372 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:47:56,372 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:47:56,372 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:47:56,372 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:47:56,372 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:47:56,372 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:47:56,373 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:47:56,373 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:47:56,373 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:47:56,425 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:47:56,443 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:47:56,449 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:47:56,451 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:47:56,451 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:47:56,452 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label09_true-unreach-call_false-termination.c [2018-09-18 11:47:56,856 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8571db779/95b800f1ebfe48b7b81b1b7cc66f05d6/FLAG883f9086d [2018-09-18 11:47:57,135 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:47:57,138 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label09_true-unreach-call_false-termination.c [2018-09-18 11:47:57,157 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8571db779/95b800f1ebfe48b7b81b1b7cc66f05d6/FLAG883f9086d [2018-09-18 11:47:57,180 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8571db779/95b800f1ebfe48b7b81b1b7cc66f05d6 [2018-09-18 11:47:57,189 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:47:57,192 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:47:57,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:47:57,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:47:57,200 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:47:57,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:47:57" (1/1) ... [2018-09-18 11:47:57,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@537cd63d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:47:57, skipping insertion in model container [2018-09-18 11:47:57,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:47:57" (1/1) ... [2018-09-18 11:47:57,216 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:47:57,781 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:47:57,800 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:47:57,945 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:47:57,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:47:57 WrapperNode [2018-09-18 11:47:57,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:47:57,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:47:57,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:47:57,997 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:47:58,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:47:57" (1/1) ... [2018-09-18 11:47:58,041 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:47:57" (1/1) ... [2018-09-18 11:47:58,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:47:58,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:47:58,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:47:58,123 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:47:58,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:47:57" (1/1) ... [2018-09-18 11:47:58,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:47:57" (1/1) ... [2018-09-18 11:47:58,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:47:57" (1/1) ... [2018-09-18 11:47:58,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:47:57" (1/1) ... [2018-09-18 11:47:58,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:47:57" (1/1) ... [2018-09-18 11:47:58,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:47:57" (1/1) ... [2018-09-18 11:47:58,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:47:57" (1/1) ... [2018-09-18 11:47:58,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:47:58,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:47:58,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:47:58,391 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:47:58,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:47:57" (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 [2018-09-18 11:47:58,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:47:58,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:47:58,475 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:47:58,475 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:47:58,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:47:58,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:47:58,475 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:47:58,476 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:48:02,172 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:48:02,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:48:02 BoogieIcfgContainer [2018-09-18 11:48:02,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:48:02,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:48:02,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:48:02,178 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:48:02,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:47:57" (1/3) ... [2018-09-18 11:48:02,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf4f990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:48:02, skipping insertion in model container [2018-09-18 11:48:02,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:47:57" (2/3) ... [2018-09-18 11:48:02,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf4f990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:48:02, skipping insertion in model container [2018-09-18 11:48:02,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:48:02" (3/3) ... [2018-09-18 11:48:02,183 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label09_true-unreach-call_false-termination.c [2018-09-18 11:48:02,193 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:48:02,202 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:48:02,265 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:48:02,266 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:48:02,267 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:48:02,267 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:48:02,267 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:48:02,267 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:48:02,267 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:48:02,268 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:48:02,268 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:48:02,306 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-09-18 11:48:02,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-18 11:48:02,316 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:48:02,318 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] [2018-09-18 11:48:02,319 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:48:02,325 INFO L82 PathProgramCache]: Analyzing trace with hash 968801788, now seen corresponding path program 1 times [2018-09-18 11:48:02,328 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:48:02,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:02,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:02,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:02,375 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:48:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:02,831 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-09-18 11:48:02,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:48:02,847 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:48:02,847 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:48:02,847 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:48:02,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:48:02,869 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:48:02,870 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:48:02,872 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-09-18 11:48:05,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:48:05,835 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-09-18 11:48:05,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:48:05,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-09-18 11:48:05,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:48:05,861 INFO L225 Difference]: With dead ends: 894 [2018-09-18 11:48:05,862 INFO L226 Difference]: Without dead ends: 633 [2018-09-18 11:48:05,870 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:48:05,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-09-18 11:48:05,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-09-18 11:48:05,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-09-18 11:48:05,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 962 transitions. [2018-09-18 11:48:05,965 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 962 transitions. Word has length 52 [2018-09-18 11:48:05,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:48:05,966 INFO L480 AbstractCegarLoop]: Abstraction has 633 states and 962 transitions. [2018-09-18 11:48:05,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:48:05,966 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 962 transitions. [2018-09-18 11:48:05,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-09-18 11:48:05,977 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:48:05,978 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:48:05,978 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:48:05,979 INFO L82 PathProgramCache]: Analyzing trace with hash -415473421, now seen corresponding path program 1 times [2018-09-18 11:48:05,979 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:48:05,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:05,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:05,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:05,981 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:48:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:06,298 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:48:06,299 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:48:06,299 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:48:06,299 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:48:06,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:48:06,302 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:48:06,302 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:48:06,303 INFO L87 Difference]: Start difference. First operand 633 states and 962 transitions. Second operand 4 states. [2018-09-18 11:48:09,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:48:09,652 INFO L93 Difference]: Finished difference Result 2358 states and 3740 transitions. [2018-09-18 11:48:09,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:48:09,653 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2018-09-18 11:48:09,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:48:09,671 INFO L225 Difference]: With dead ends: 2358 [2018-09-18 11:48:09,671 INFO L226 Difference]: Without dead ends: 1731 [2018-09-18 11:48:09,678 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:48:09,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-09-18 11:48:09,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-09-18 11:48:09,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-09-18 11:48:09,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2514 transitions. [2018-09-18 11:48:09,780 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2514 transitions. Word has length 165 [2018-09-18 11:48:09,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:48:09,782 INFO L480 AbstractCegarLoop]: Abstraction has 1731 states and 2514 transitions. [2018-09-18 11:48:09,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:48:09,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2514 transitions. [2018-09-18 11:48:09,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-09-18 11:48:09,794 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:48:09,795 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:48:09,795 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:48:09,795 INFO L82 PathProgramCache]: Analyzing trace with hash 603968484, now seen corresponding path program 1 times [2018-09-18 11:48:09,795 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:48:09,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:09,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:09,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:09,797 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:48:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:10,136 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:48:10,136 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:48:10,136 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 [2018-09-18 11:48:10,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:10,150 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:48:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:10,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:48:10,589 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:48:10,589 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:48:10,917 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:48:10,939 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:48:10,939 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 [2018-09-18 11:48:10,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:10,956 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:48:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:11,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:48:11,399 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:48:11,399 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:48:11,901 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:48:11,903 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:48:11,904 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 11:48:11,904 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:48:11,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:48:11,909 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:48:11,909 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:48:11,910 INFO L87 Difference]: Start difference. First operand 1731 states and 2514 transitions. Second operand 9 states. [2018-09-18 11:48:19,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:48:19,668 INFO L93 Difference]: Finished difference Result 8162 states and 14210 transitions. [2018-09-18 11:48:19,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-18 11:48:19,669 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 240 [2018-09-18 11:48:19,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:48:19,720 INFO L225 Difference]: With dead ends: 8162 [2018-09-18 11:48:19,721 INFO L226 Difference]: Without dead ends: 4013 [2018-09-18 11:48:19,853 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 958 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-09-18 11:48:19,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4013 states. [2018-09-18 11:48:20,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4013 to 3863. [2018-09-18 11:48:20,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3863 states. [2018-09-18 11:48:20,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3863 states to 3863 states and 5261 transitions. [2018-09-18 11:48:20,050 INFO L78 Accepts]: Start accepts. Automaton has 3863 states and 5261 transitions. Word has length 240 [2018-09-18 11:48:20,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:48:20,051 INFO L480 AbstractCegarLoop]: Abstraction has 3863 states and 5261 transitions. [2018-09-18 11:48:20,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:48:20,051 INFO L276 IsEmpty]: Start isEmpty. Operand 3863 states and 5261 transitions. [2018-09-18 11:48:20,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-09-18 11:48:20,066 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:48:20,066 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:48:20,066 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:48:20,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1784650764, now seen corresponding path program 1 times [2018-09-18 11:48:20,067 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:48:20,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:20,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:20,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:20,068 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:48:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:20,315 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:48:20,316 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:48:20,316 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 [2018-09-18 11:48:20,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:20,325 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:48:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:20,394 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:48:20,709 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:48:20,709 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:48:20,837 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:48:20,857 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:48:20,858 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:48:20,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:20,874 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:48:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:21,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:48:21,174 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:48:21,174 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:48:21,350 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:48:21,352 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:48:21,352 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 11:48:21,352 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:48:21,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:48:21,354 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:48:21,354 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:48:21,355 INFO L87 Difference]: Start difference. First operand 3863 states and 5261 transitions. Second operand 9 states. [2018-09-18 11:48:24,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:48:24,261 INFO L93 Difference]: Finished difference Result 9227 states and 14249 transitions. [2018-09-18 11:48:24,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-18 11:48:24,261 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 252 [2018-09-18 11:48:24,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:48:24,286 INFO L225 Difference]: With dead ends: 9227 [2018-09-18 11:48:24,286 INFO L226 Difference]: Without dead ends: 3556 [2018-09-18 11:48:24,324 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1030 GetRequests, 1006 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-09-18 11:48:24,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3556 states. [2018-09-18 11:48:24,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3556 to 3436. [2018-09-18 11:48:24,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3436 states. [2018-09-18 11:48:24,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3436 states to 3436 states and 4501 transitions. [2018-09-18 11:48:24,439 INFO L78 Accepts]: Start accepts. Automaton has 3436 states and 4501 transitions. Word has length 252 [2018-09-18 11:48:24,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:48:24,440 INFO L480 AbstractCegarLoop]: Abstraction has 3436 states and 4501 transitions. [2018-09-18 11:48:24,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:48:24,440 INFO L276 IsEmpty]: Start isEmpty. Operand 3436 states and 4501 transitions. [2018-09-18 11:48:24,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-09-18 11:48:24,452 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:48:24,452 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, 2, 2, 2, 2, 2, 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] [2018-09-18 11:48:24,452 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:48:24,453 INFO L82 PathProgramCache]: Analyzing trace with hash -647309685, now seen corresponding path program 1 times [2018-09-18 11:48:24,453 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:48:24,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:24,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:24,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:24,454 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:48:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:24,941 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 7 [2018-09-18 11:48:25,537 WARN L178 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 16 [2018-09-18 11:48:25,815 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-18 11:48:26,120 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 123 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:48:26,121 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:48:26,121 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-18 11:48:26,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:26,131 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:48:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:26,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:48:26,425 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-09-18 11:48:26,425 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:48:26,599 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2018-09-18 11:48:27,161 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 90 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:48:27,181 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:48:27,181 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 5] total 14 [2018-09-18 11:48:27,181 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:48:27,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:48:27,182 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:48:27,182 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2018-09-18 11:48:27,182 INFO L87 Difference]: Start difference. First operand 3436 states and 4501 transitions. Second operand 5 states. [2018-09-18 11:48:29,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:48:29,696 INFO L93 Difference]: Finished difference Result 7773 states and 10140 transitions. [2018-09-18 11:48:29,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:48:29,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 257 [2018-09-18 11:48:29,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:48:29,722 INFO L225 Difference]: With dead ends: 7773 [2018-09-18 11:48:29,722 INFO L226 Difference]: Without dead ends: 4523 [2018-09-18 11:48:29,732 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 512 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-09-18 11:48:29,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4523 states. [2018-09-18 11:48:29,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4523 to 4089. [2018-09-18 11:48:29,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4089 states. [2018-09-18 11:48:29,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4089 states to 4089 states and 5337 transitions. [2018-09-18 11:48:29,857 INFO L78 Accepts]: Start accepts. Automaton has 4089 states and 5337 transitions. Word has length 257 [2018-09-18 11:48:29,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:48:29,857 INFO L480 AbstractCegarLoop]: Abstraction has 4089 states and 5337 transitions. [2018-09-18 11:48:29,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:48:29,857 INFO L276 IsEmpty]: Start isEmpty. Operand 4089 states and 5337 transitions. [2018-09-18 11:48:29,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-09-18 11:48:29,868 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:48:29,868 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:48:29,868 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:48:29,869 INFO L82 PathProgramCache]: Analyzing trace with hash 942963088, now seen corresponding path program 1 times [2018-09-18 11:48:29,869 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:48:29,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:29,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:29,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:29,870 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:48:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:30,168 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:48:30,336 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 91 proven. 35 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-09-18 11:48:30,336 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:48:30,336 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 [2018-09-18 11:48:30,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:30,344 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:48:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:30,416 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:48:30,489 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:48:30,489 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:48:30,607 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:48:30,628 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:48:30,628 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 [2018-09-18 11:48:30,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:30,650 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:48:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:30,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:48:31,167 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-09-18 11:48:31,167 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:48:31,687 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-09-18 11:48:31,690 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-18 11:48:31,690 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 11 [2018-09-18 11:48:31,690 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:48:31,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:48:31,691 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:48:31,692 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:48:31,693 INFO L87 Difference]: Start difference. First operand 4089 states and 5337 transitions. Second operand 5 states. [2018-09-18 11:48:32,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:48:32,973 INFO L93 Difference]: Finished difference Result 7887 states and 10307 transitions. [2018-09-18 11:48:32,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:48:32,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 266 [2018-09-18 11:48:32,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:48:33,042 INFO L225 Difference]: With dead ends: 7887 [2018-09-18 11:48:33,043 INFO L226 Difference]: Without dead ends: 4017 [2018-09-18 11:48:33,049 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1072 GetRequests, 1056 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:48:33,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4017 states. [2018-09-18 11:48:33,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4017 to 3987. [2018-09-18 11:48:33,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3987 states. [2018-09-18 11:48:33,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3987 states to 3987 states and 4954 transitions. [2018-09-18 11:48:33,133 INFO L78 Accepts]: Start accepts. Automaton has 3987 states and 4954 transitions. Word has length 266 [2018-09-18 11:48:33,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:48:33,134 INFO L480 AbstractCegarLoop]: Abstraction has 3987 states and 4954 transitions. [2018-09-18 11:48:33,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:48:33,134 INFO L276 IsEmpty]: Start isEmpty. Operand 3987 states and 4954 transitions. [2018-09-18 11:48:33,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-09-18 11:48:33,148 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:48:33,149 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:48:33,149 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:48:33,149 INFO L82 PathProgramCache]: Analyzing trace with hash 612694908, now seen corresponding path program 1 times [2018-09-18 11:48:33,149 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:48:33,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:33,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:33,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:33,151 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:48:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:34,218 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 223 proven. 140 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:48:34,218 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:48:34,218 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 [2018-09-18 11:48:34,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:34,226 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:48:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:34,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:48:34,779 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-18 11:48:34,992 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 269 proven. 53 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-09-18 11:48:34,992 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:48:35,642 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 145 proven. 218 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:48:35,663 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:48:35,664 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 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:48:35,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:35,680 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:48:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:35,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:48:36,191 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 269 proven. 53 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-09-18 11:48:36,191 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:48:36,917 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 145 proven. 218 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:48:36,919 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:48:36,919 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8, 8, 8] total 26 [2018-09-18 11:48:36,919 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:48:36,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-18 11:48:36,921 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-18 11:48:36,922 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2018-09-18 11:48:36,922 INFO L87 Difference]: Start difference. First operand 3987 states and 4954 transitions. Second operand 15 states. [2018-09-18 11:48:40,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:48:40,961 INFO L93 Difference]: Finished difference Result 8564 states and 10608 transitions. [2018-09-18 11:48:40,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-18 11:48:40,961 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 342 [2018-09-18 11:48:40,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:48:40,978 INFO L225 Difference]: With dead ends: 8564 [2018-09-18 11:48:40,978 INFO L226 Difference]: Without dead ends: 4567 [2018-09-18 11:48:41,034 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1409 GetRequests, 1366 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=401, Invalid=1239, Unknown=0, NotChecked=0, Total=1640 [2018-09-18 11:48:41,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4567 states. [2018-09-18 11:48:41,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4567 to 4167. [2018-09-18 11:48:41,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4167 states. [2018-09-18 11:48:41,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4167 states to 4167 states and 4881 transitions. [2018-09-18 11:48:41,123 INFO L78 Accepts]: Start accepts. Automaton has 4167 states and 4881 transitions. Word has length 342 [2018-09-18 11:48:41,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:48:41,124 INFO L480 AbstractCegarLoop]: Abstraction has 4167 states and 4881 transitions. [2018-09-18 11:48:41,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-18 11:48:41,124 INFO L276 IsEmpty]: Start isEmpty. Operand 4167 states and 4881 transitions. [2018-09-18 11:48:41,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2018-09-18 11:48:41,140 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:48:41,141 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:48:41,141 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:48:41,141 INFO L82 PathProgramCache]: Analyzing trace with hash 2101236023, now seen corresponding path program 1 times [2018-09-18 11:48:41,141 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:48:41,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:41,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:41,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:41,142 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:48:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:41,564 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:48:42,060 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 86 proven. 307 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:48:42,061 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:48:42,061 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 [2018-09-18 11:48:42,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:42,069 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:48:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:42,166 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:48:42,381 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2018-09-18 11:48:42,382 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:48:42,513 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-18 11:48:43,122 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 135 proven. 174 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-18 11:48:43,142 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:48:43,143 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [17, 5] total 21 [2018-09-18 11:48:43,143 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:48:43,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:48:43,144 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:48:43,144 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2018-09-18 11:48:43,144 INFO L87 Difference]: Start difference. First operand 4167 states and 4881 transitions. Second operand 5 states. [2018-09-18 11:48:44,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:48:44,757 INFO L93 Difference]: Finished difference Result 9985 states and 11792 transitions. [2018-09-18 11:48:44,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:48:44,757 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 367 [2018-09-18 11:48:44,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:48:44,777 INFO L225 Difference]: With dead ends: 9985 [2018-09-18 11:48:44,778 INFO L226 Difference]: Without dead ends: 6007 [2018-09-18 11:48:44,788 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 757 GetRequests, 731 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2018-09-18 11:48:44,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6007 states. [2018-09-18 11:48:44,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6007 to 6007. [2018-09-18 11:48:44,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6007 states. [2018-09-18 11:48:44,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6007 states to 6007 states and 6806 transitions. [2018-09-18 11:48:44,909 INFO L78 Accepts]: Start accepts. Automaton has 6007 states and 6806 transitions. Word has length 367 [2018-09-18 11:48:44,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:48:44,909 INFO L480 AbstractCegarLoop]: Abstraction has 6007 states and 6806 transitions. [2018-09-18 11:48:44,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:48:44,910 INFO L276 IsEmpty]: Start isEmpty. Operand 6007 states and 6806 transitions. [2018-09-18 11:48:44,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-09-18 11:48:44,927 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:48:44,928 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, 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, 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, 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] [2018-09-18 11:48:44,928 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:48:44,929 INFO L82 PathProgramCache]: Analyzing trace with hash 238759036, now seen corresponding path program 1 times [2018-09-18 11:48:44,929 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:48:44,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:44,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:44,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:44,930 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:48:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:45,322 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-09-18 11:48:45,733 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 298 proven. 312 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-09-18 11:48:45,733 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:48:45,734 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 [2018-09-18 11:48:45,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:45,743 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:48:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:45,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:48:46,076 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 578 proven. 2 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2018-09-18 11:48:46,076 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:48:46,481 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 412 proven. 73 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-09-18 11:48:46,502 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:48:46,502 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 [2018-09-18 11:48:46,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:46,517 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:48:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:46,779 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:48:46,941 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 574 proven. 6 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2018-09-18 11:48:46,941 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:48:47,481 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 412 proven. 73 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-09-18 11:48:47,484 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:48:47,485 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 5, 5] total 13 [2018-09-18 11:48:47,485 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:48:47,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-18 11:48:47,486 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-18 11:48:47,487 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-18 11:48:47,487 INFO L87 Difference]: Start difference. First operand 6007 states and 6806 transitions. Second operand 11 states. [2018-09-18 11:48:52,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:48:52,523 INFO L93 Difference]: Finished difference Result 12040 states and 13934 transitions. [2018-09-18 11:48:52,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-18 11:48:52,523 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 478 [2018-09-18 11:48:52,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:48:52,538 INFO L225 Difference]: With dead ends: 12040 [2018-09-18 11:48:52,538 INFO L226 Difference]: Without dead ends: 5367 [2018-09-18 11:48:52,553 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1964 GetRequests, 1928 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=313, Invalid=1019, Unknown=0, NotChecked=0, Total=1332 [2018-09-18 11:48:52,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5367 states. [2018-09-18 11:48:52,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5367 to 4918. [2018-09-18 11:48:52,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4918 states. [2018-09-18 11:48:52,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4918 states to 4918 states and 5466 transitions. [2018-09-18 11:48:52,638 INFO L78 Accepts]: Start accepts. Automaton has 4918 states and 5466 transitions. Word has length 478 [2018-09-18 11:48:52,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:48:52,639 INFO L480 AbstractCegarLoop]: Abstraction has 4918 states and 5466 transitions. [2018-09-18 11:48:52,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-18 11:48:52,640 INFO L276 IsEmpty]: Start isEmpty. Operand 4918 states and 5466 transitions. [2018-09-18 11:48:52,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2018-09-18 11:48:52,657 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:48:52,657 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:48:52,657 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:48:52,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1079910227, now seen corresponding path program 1 times [2018-09-18 11:48:52,658 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:48:52,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:52,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:52,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:52,659 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:48:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:53,200 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-18 11:48:53,404 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-18 11:48:54,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 556 proven. 467 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2018-09-18 11:48:54,551 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:48:54,551 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 [2018-09-18 11:48:54,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:54,559 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:48:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:54,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:48:54,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 237 proven. 0 refuted. 0 times theorem prover too weak. 971 trivial. 0 not checked. [2018-09-18 11:48:54,884 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:48:55,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 237 proven. 0 refuted. 0 times theorem prover too weak. 971 trivial. 0 not checked. [2018-09-18 11:48:55,139 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 11:48:55,140 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [12] total 14 [2018-09-18 11:48:55,140 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:48:55,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:48:55,140 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:48:55,141 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2018-09-18 11:48:55,141 INFO L87 Difference]: Start difference. First operand 4918 states and 5466 transitions. Second operand 3 states. [2018-09-18 11:48:55,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:48:55,698 INFO L93 Difference]: Finished difference Result 9802 states and 10906 transitions. [2018-09-18 11:48:55,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:48:55,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 575 [2018-09-18 11:48:55,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:48:55,711 INFO L225 Difference]: With dead ends: 9802 [2018-09-18 11:48:55,711 INFO L226 Difference]: Without dead ends: 5258 [2018-09-18 11:48:55,718 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1163 GetRequests, 1151 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2018-09-18 11:48:55,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5258 states. [2018-09-18 11:48:55,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5258 to 5246. [2018-09-18 11:48:55,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5246 states. [2018-09-18 11:48:55,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5246 states to 5246 states and 5801 transitions. [2018-09-18 11:48:55,799 INFO L78 Accepts]: Start accepts. Automaton has 5246 states and 5801 transitions. Word has length 575 [2018-09-18 11:48:55,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:48:55,800 INFO L480 AbstractCegarLoop]: Abstraction has 5246 states and 5801 transitions. [2018-09-18 11:48:55,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:48:55,801 INFO L276 IsEmpty]: Start isEmpty. Operand 5246 states and 5801 transitions. [2018-09-18 11:48:55,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2018-09-18 11:48:55,810 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:48:55,811 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:48:55,811 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:48:55,812 INFO L82 PathProgramCache]: Analyzing trace with hash -888227816, now seen corresponding path program 1 times [2018-09-18 11:48:55,812 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:48:55,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:55,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:55,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:48:55,813 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:48:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:57,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 556 proven. 482 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-09-18 11:48:57,141 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:48:57,141 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:48:57,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:57,150 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:48:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:57,301 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:48:57,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 651 proven. 2 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2018-09-18 11:48:57,562 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:48:57,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 651 proven. 2 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2018-09-18 11:48:57,835 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:48:57,835 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 16 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 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:48:57,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:48:57,851 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:48:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:48:58,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:48:58,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 651 proven. 2 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2018-09-18 11:48:58,673 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:48:59,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 651 proven. 2 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2018-09-18 11:48:59,023 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:48:59,024 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 5, 5] total 21 [2018-09-18 11:48:59,024 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:48:59,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-18 11:48:59,026 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-18 11:48:59,026 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2018-09-18 11:48:59,027 INFO L87 Difference]: Start difference. First operand 5246 states and 5801 transitions. Second operand 15 states. [2018-09-18 11:49:06,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:49:06,474 INFO L93 Difference]: Finished difference Result 10547 states and 12021 transitions. [2018-09-18 11:49:06,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-18 11:49:06,475 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 586 [2018-09-18 11:49:06,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:49:06,489 INFO L225 Difference]: With dead ends: 10547 [2018-09-18 11:49:06,490 INFO L226 Difference]: Without dead ends: 5244 [2018-09-18 11:49:06,501 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2393 GetRequests, 2351 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=364, Invalid=1358, Unknown=0, NotChecked=0, Total=1722 [2018-09-18 11:49:06,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5244 states. [2018-09-18 11:49:06,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5244 to 5052. [2018-09-18 11:49:06,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5052 states. [2018-09-18 11:49:06,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5052 states to 5052 states and 5325 transitions. [2018-09-18 11:49:06,594 INFO L78 Accepts]: Start accepts. Automaton has 5052 states and 5325 transitions. Word has length 586 [2018-09-18 11:49:06,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:49:06,595 INFO L480 AbstractCegarLoop]: Abstraction has 5052 states and 5325 transitions. [2018-09-18 11:49:06,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-18 11:49:06,595 INFO L276 IsEmpty]: Start isEmpty. Operand 5052 states and 5325 transitions. [2018-09-18 11:49:06,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2018-09-18 11:49:06,602 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:49:06,603 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2018-09-18 11:49:06,603 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:49:06,603 INFO L82 PathProgramCache]: Analyzing trace with hash -295432696, now seen corresponding path program 1 times [2018-09-18 11:49:06,603 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:49:06,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:49:06,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:49:06,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:49:06,605 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:49:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:49:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1184 backedges. 582 proven. 422 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-09-18 11:49:08,242 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:49:08,242 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:49:08,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:49:08,250 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:49:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:49:08,405 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:49:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1184 backedges. 811 proven. 2 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2018-09-18 11:49:08,825 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:49:09,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1184 backedges. 576 proven. 73 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2018-09-18 11:49:09,756 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:49:09,756 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 18 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 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:49:09,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:49:09,772 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:49:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:49:10,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:49:11,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1184 backedges. 739 proven. 74 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2018-09-18 11:49:11,200 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:49:11,655 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2018-09-18 11:49:13,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1184 backedges. 255 proven. 599 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-09-18 11:49:13,577 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:49:13,578 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5, 10, 11] total 31 [2018-09-18 11:49:13,578 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:49:13,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-18 11:49:13,579 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-18 11:49:13,579 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2018-09-18 11:49:13,580 INFO L87 Difference]: Start difference. First operand 5052 states and 5325 transitions. Second operand 17 states. [2018-09-18 11:49:16,654 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2018-09-18 11:49:17,003 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2018-09-18 11:49:18,362 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2018-09-18 11:49:18,896 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2018-09-18 11:49:19,508 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2018-09-18 11:49:19,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:49:19,985 INFO L93 Difference]: Finished difference Result 10660 states and 11322 transitions. [2018-09-18 11:49:19,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-18 11:49:19,986 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 592 [2018-09-18 11:49:19,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:49:20,000 INFO L225 Difference]: With dead ends: 10660 [2018-09-18 11:49:20,001 INFO L226 Difference]: Without dead ends: 5482 [2018-09-18 11:49:20,009 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2431 GetRequests, 2360 SyntacticMatches, 13 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=659, Invalid=2881, Unknown=0, NotChecked=0, Total=3540 [2018-09-18 11:49:20,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5482 states. [2018-09-18 11:49:20,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5482 to 5050. [2018-09-18 11:49:20,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5050 states. [2018-09-18 11:49:20,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5050 states to 5050 states and 5312 transitions. [2018-09-18 11:49:20,098 INFO L78 Accepts]: Start accepts. Automaton has 5050 states and 5312 transitions. Word has length 592 [2018-09-18 11:49:20,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:49:20,099 INFO L480 AbstractCegarLoop]: Abstraction has 5050 states and 5312 transitions. [2018-09-18 11:49:20,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-18 11:49:20,099 INFO L276 IsEmpty]: Start isEmpty. Operand 5050 states and 5312 transitions. [2018-09-18 11:49:20,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2018-09-18 11:49:20,107 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:49:20,108 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2018-09-18 11:49:20,108 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:49:20,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1451399131, now seen corresponding path program 1 times [2018-09-18 11:49:20,109 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:49:20,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:49:20,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:49:20,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:49:20,110 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:49:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:49:20,593 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:49:21,192 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-18 11:49:22,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 356 proven. 393 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2018-09-18 11:49:22,089 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:49:22,089 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 [2018-09-18 11:49:22,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:49:22,096 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:49:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:49:22,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:49:22,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 528 proven. 2 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2018-09-18 11:49:22,593 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:49:23,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 528 proven. 2 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2018-09-18 11:49:23,048 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:49:23,049 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 [2018-09-18 11:49:23,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:49:23,066 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:49:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:49:23,415 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:49:24,039 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-18 11:49:24,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 453 proven. 404 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2018-09-18 11:49:24,219 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:49:24,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 528 proven. 2 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2018-09-18 11:49:24,814 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:49:24,815 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5, 7, 5] total 25 [2018-09-18 11:49:24,815 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:49:24,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-18 11:49:24,816 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-18 11:49:24,817 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2018-09-18 11:49:24,817 INFO L87 Difference]: Start difference. First operand 5050 states and 5312 transitions. Second operand 17 states. [2018-09-18 11:49:36,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:49:36,035 INFO L93 Difference]: Finished difference Result 13435 states and 14402 transitions. [2018-09-18 11:49:36,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-18 11:49:36,035 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 625 [2018-09-18 11:49:36,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:49:36,056 INFO L225 Difference]: With dead ends: 13435 [2018-09-18 11:49:36,057 INFO L226 Difference]: Without dead ends: 8576 [2018-09-18 11:49:36,067 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2617 GetRequests, 2531 SyntacticMatches, 6 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1841 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1195, Invalid=5447, Unknown=0, NotChecked=0, Total=6642 [2018-09-18 11:49:36,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8576 states. [2018-09-18 11:49:36,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8576 to 7867. [2018-09-18 11:49:36,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7867 states. [2018-09-18 11:49:36,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7867 states to 7867 states and 8243 transitions. [2018-09-18 11:49:36,216 INFO L78 Accepts]: Start accepts. Automaton has 7867 states and 8243 transitions. Word has length 625 [2018-09-18 11:49:36,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:49:36,218 INFO L480 AbstractCegarLoop]: Abstraction has 7867 states and 8243 transitions. [2018-09-18 11:49:36,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-18 11:49:36,218 INFO L276 IsEmpty]: Start isEmpty. Operand 7867 states and 8243 transitions. [2018-09-18 11:49:36,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2018-09-18 11:49:36,226 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:49:36,227 INFO L376 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2018-09-18 11:49:36,227 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:49:36,227 INFO L82 PathProgramCache]: Analyzing trace with hash 382307067, now seen corresponding path program 1 times [2018-09-18 11:49:36,228 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:49:36,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:49:36,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:49:36,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:49:36,229 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:49:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:49:36,672 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-18 11:49:37,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 804 proven. 749 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 11:49:37,464 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:49:37,465 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 [2018-09-18 11:49:37,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:49:37,472 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:49:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:49:37,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:49:38,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 1022 proven. 2 refuted. 0 times theorem prover too weak. 614 trivial. 0 not checked. [2018-09-18 11:49:38,037 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:49:38,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 718 proven. 73 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2018-09-18 11:49:38,862 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:49:38,862 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 22 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 22 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:49:38,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:49:38,878 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:49:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:49:39,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:49:39,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 1024 proven. 18 refuted. 0 times theorem prover too weak. 596 trivial. 0 not checked. [2018-09-18 11:49:39,550 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:49:40,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 718 proven. 73 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2018-09-18 11:49:40,467 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:49:40,467 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 6, 5] total 23 [2018-09-18 11:49:40,467 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:49:40,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-18 11:49:40,468 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-18 11:49:40,469 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2018-09-18 11:49:40,469 INFO L87 Difference]: Start difference. First operand 7867 states and 8243 transitions. Second operand 15 states. [2018-09-18 11:49:43,361 WARN L178 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-09-18 11:49:44,963 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2018-09-18 11:49:47,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:49:47,348 INFO L93 Difference]: Finished difference Result 16394 states and 17737 transitions. [2018-09-18 11:49:47,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-18 11:49:47,349 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 681 [2018-09-18 11:49:47,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:49:47,373 INFO L225 Difference]: With dead ends: 16394 [2018-09-18 11:49:47,373 INFO L226 Difference]: Without dead ends: 8347 [2018-09-18 11:49:47,385 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2807 GetRequests, 2738 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1398 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=761, Invalid=3795, Unknown=0, NotChecked=0, Total=4556 [2018-09-18 11:49:47,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8347 states. [2018-09-18 11:49:47,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8347 to 8058. [2018-09-18 11:49:47,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8058 states. [2018-09-18 11:49:47,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8058 states to 8058 states and 8532 transitions. [2018-09-18 11:49:47,571 INFO L78 Accepts]: Start accepts. Automaton has 8058 states and 8532 transitions. Word has length 681 [2018-09-18 11:49:47,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:49:47,572 INFO L480 AbstractCegarLoop]: Abstraction has 8058 states and 8532 transitions. [2018-09-18 11:49:47,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-18 11:49:47,573 INFO L276 IsEmpty]: Start isEmpty. Operand 8058 states and 8532 transitions. [2018-09-18 11:49:47,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 844 [2018-09-18 11:49:47,583 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:49:47,584 INFO L376 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:49:47,584 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:49:47,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1117645179, now seen corresponding path program 1 times [2018-09-18 11:49:47,585 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:49:47,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:49:47,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:49:47,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:49:47,586 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:49:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:49:48,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2308 backedges. 897 proven. 43 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2018-09-18 11:49:48,799 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:49:48,799 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:49:48,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:49:48,817 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:49:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:49:49,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:49:51,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2308 backedges. 897 proven. 43 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2018-09-18 11:49:51,896 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:49:52,682 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-09-18 11:49:52,787 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-09-18 11:49:54,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2308 backedges. 938 proven. 2 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2018-09-18 11:49:54,194 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:49:54,195 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 24 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 24 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:49:54,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:49:54,210 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:49:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:49:54,666 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:49:55,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2308 backedges. 897 proven. 43 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2018-09-18 11:49:55,215 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:49:56,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2308 backedges. 938 proven. 2 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2018-09-18 11:49:56,379 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:49:56,380 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6, 6, 6] total 13 [2018-09-18 11:49:56,380 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:49:56,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-18 11:49:56,382 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-18 11:49:56,382 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=104, Unknown=1, NotChecked=0, Total=156 [2018-09-18 11:49:56,382 INFO L87 Difference]: Start difference. First operand 8058 states and 8532 transitions. Second operand 10 states. [2018-09-18 11:49:59,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:49:59,826 INFO L93 Difference]: Finished difference Result 15228 states and 16230 transitions. [2018-09-18 11:49:59,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-18 11:49:59,827 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 843 [2018-09-18 11:49:59,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:49:59,846 INFO L225 Difference]: With dead ends: 15228 [2018-09-18 11:49:59,846 INFO L226 Difference]: Without dead ends: 9191 [2018-09-18 11:49:59,857 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3390 GetRequests, 3366 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=117, Invalid=224, Unknown=1, NotChecked=0, Total=342 [2018-09-18 11:49:59,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9191 states. [2018-09-18 11:50:00,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9191 to 9178. [2018-09-18 11:50:00,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9178 states. [2018-09-18 11:50:00,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9178 states to 9178 states and 9751 transitions. [2018-09-18 11:50:00,036 INFO L78 Accepts]: Start accepts. Automaton has 9178 states and 9751 transitions. Word has length 843 [2018-09-18 11:50:00,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:50:00,036 INFO L480 AbstractCegarLoop]: Abstraction has 9178 states and 9751 transitions. [2018-09-18 11:50:00,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-18 11:50:00,036 INFO L276 IsEmpty]: Start isEmpty. Operand 9178 states and 9751 transitions. [2018-09-18 11:50:00,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 963 [2018-09-18 11:50:00,049 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:50:00,050 INFO L376 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:50:00,050 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:50:00,051 INFO L82 PathProgramCache]: Analyzing trace with hash 105404756, now seen corresponding path program 1 times [2018-09-18 11:50:00,051 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:50:00,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:50:00,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:50:00,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:50:00,052 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:50:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:50:00,737 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-18 11:50:00,921 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-09-18 11:50:01,379 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-09-18 11:50:03,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2590 backedges. 487 proven. 1383 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2018-09-18 11:50:03,907 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:50:03,907 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:50:03,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:50:03,917 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:50:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:50:04,144 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:50:17,779 WARN L178 SmtUtils]: Spent 12.92 s on a formula simplification. DAG size of input: 864 DAG size of output: 28 Received shutdown request... [2018-09-18 11:52:05,079 WARN L186 SmtUtils]: Removed 6 from assertion stack [2018-09-18 11:52:05,079 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-18 11:52:05,280 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:52:05,280 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 11:52:05,286 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 11:52:05,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 11:52:05 BoogieIcfgContainer [2018-09-18 11:52:05,286 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 11:52:05,287 INFO L168 Benchmark]: Toolchain (without parser) took 248097.29 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 548.6 MB. Max. memory is 7.1 GB. [2018-09-18 11:52:05,288 INFO L168 Benchmark]: CDTParser took 1.47 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 11:52:05,289 INFO L168 Benchmark]: CACSL2BoogieTranslator took 803.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-09-18 11:52:05,289 INFO L168 Benchmark]: Boogie Procedure Inliner took 125.14 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-18 11:52:05,290 INFO L168 Benchmark]: Boogie Preprocessor took 268.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 779.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -888.8 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. [2018-09-18 11:52:05,291 INFO L168 Benchmark]: RCFGBuilder took 3782.05 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 120.6 MB). Peak memory consumption was 120.6 MB. Max. memory is 7.1 GB. [2018-09-18 11:52:05,292 INFO L168 Benchmark]: TraceAbstraction took 243112.71 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 473.7 MB. Max. memory is 7.1 GB. [2018-09-18 11:52:05,296 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.47 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 803.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 125.14 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 268.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 779.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -888.8 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3782.05 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 120.6 MB). Peak memory consumption was 120.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 243112.71 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 473.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 139]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 139). Cancelled while BasicCegarLoop was analyzing trace of length 963 with TraceHistMax 8, while TraceCheckSpWp was constructing forward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 1017. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 243.0s OverallTime, 16 OverallIterations, 8 TraceHistogramMax, 68.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1265 SDtfs, 27300 SDslu, 2474 SDs, 0 SdLazy, 40918 SolverSat, 5638 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 47.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22556 GetRequests, 22061 SyntacticMatches, 60 SemanticMatches, 435 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5945 ImplicationChecksByTransitivity, 25.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9178occurred in iteration=15, 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: 1.7s AutomataMinimizationTime, 15 MinimizatonAttempts, 3230 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 4.3s SatisfiabilityAnalysisTime, 37.0s InterpolantComputationTime, 17330 NumberOfCodeBlocks, 17330 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 28278 ConstructedInterpolants, 330 QuantifiedInterpolants, 77073092 SizeOfPredicates, 59 NumberOfNonLiveVariables, 16933 ConjunctsInSsa, 304 ConjunctsInUnsatCore, 61 InterpolantComputations, 7 PerfectInterpolantSequences, 45592/51370 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/Problem14_label09_true-unreach-call_false-termination.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-52-05-310.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem14_label09_true-unreach-call_false-termination.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_11-52-05-310.csv Completed graceful shutdown