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/Problem18_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 18:08:22,925 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 18:08:22,927 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 18:08:22,941 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 18:08:22,941 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 18:08:22,942 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 18:08:22,943 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 18:08:22,945 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 18:08:22,947 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 18:08:22,947 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 18:08:22,948 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 18:08:22,949 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 18:08:22,950 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 18:08:22,951 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 18:08:22,952 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 18:08:22,952 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 18:08:22,953 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 18:08:22,955 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 18:08:22,957 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 18:08:22,959 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 18:08:22,960 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 18:08:22,961 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 18:08:22,964 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 18:08:22,964 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 18:08:22,965 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 18:08:22,966 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 18:08:22,967 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 18:08:22,967 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 18:08:22,968 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 18:08:22,969 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 18:08:22,970 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 18:08:22,970 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 18:08:22,971 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 18:08:22,971 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 18:08:22,972 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 18:08:22,973 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 18:08:22,973 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 18:08:22,990 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 18:08:22,990 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 18:08:22,991 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 18:08:22,991 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 18:08:22,991 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 18:08:22,991 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 18:08:22,992 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 18:08:22,992 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 18:08:22,992 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 18:08:22,992 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 18:08:22,992 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 18:08:22,993 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 18:08:22,993 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 18:08:22,993 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 18:08:22,994 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 18:08:22,994 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 18:08:22,994 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 18:08:22,994 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 18:08:22,994 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 18:08:22,995 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 18:08:22,995 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 18:08:22,995 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 18:08:22,995 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 18:08:22,995 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:08:22,996 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 18:08:22,996 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 18:08:22,996 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 18:08:22,996 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 18:08:22,996 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 18:08:22,997 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 18:08:22,997 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 18:08:22,997 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 18:08:22,997 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 18:08:23,054 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 18:08:23,069 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 18:08:23,075 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 18:08:23,077 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 18:08:23,077 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 18:08:23,078 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label02_true-unreach-call.c [2018-09-14 18:08:23,446 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e57076eb6/1e535a4205984fbb99f8772740521949/FLAG5cb693fea [2018-09-14 18:08:23,946 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 18:08:23,947 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label02_true-unreach-call.c [2018-09-14 18:08:23,977 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e57076eb6/1e535a4205984fbb99f8772740521949/FLAG5cb693fea [2018-09-14 18:08:23,999 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e57076eb6/1e535a4205984fbb99f8772740521949 [2018-09-14 18:08:24,012 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 18:08:24,016 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 18:08:24,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 18:08:24,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 18:08:24,027 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 18:08:24,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:08:24" (1/1) ... [2018-09-14 18:08:24,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@428e54a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:08:24, skipping insertion in model container [2018-09-14 18:08:24,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:08:24" (1/1) ... [2018-09-14 18:08:24,045 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 18:08:25,318 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:08:25,337 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 18:08:25,890 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:08:26,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:08:26 WrapperNode [2018-09-14 18:08:26,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 18:08:26,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 18:08:26,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 18:08:26,043 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 18:08:26,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:08:26" (1/1) ... [2018-09-14 18:08:26,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:08:26" (1/1) ... [2018-09-14 18:08:26,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 18:08:26,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 18:08:26,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 18:08:26,260 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 18:08:26,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:08:26" (1/1) ... [2018-09-14 18:08:26,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:08:26" (1/1) ... [2018-09-14 18:08:26,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:08:26" (1/1) ... [2018-09-14 18:08:26,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:08:26" (1/1) ... [2018-09-14 18:08:26,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:08:26" (1/1) ... [2018-09-14 18:08:26,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:08:26" (1/1) ... [2018-09-14 18:08:26,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:08:26" (1/1) ... [2018-09-14 18:08:26,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 18:08:26,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 18:08:26,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 18:08:26,860 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 18:08:26,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:08:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:08:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 18:08:26,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 18:08:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 18:08:26,934 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 18:08:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 18:08:26,935 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 18:08:26,935 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 18:08:26,935 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 18:08:26,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 18:08:26,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 18:08:26,936 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 18:08:26,936 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 18:08:35,419 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 18:08:35,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:08:35 BoogieIcfgContainer [2018-09-14 18:08:35,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 18:08:35,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 18:08:35,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 18:08:35,426 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 18:08:35,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 06:08:24" (1/3) ... [2018-09-14 18:08:35,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e68ce89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:08:35, skipping insertion in model container [2018-09-14 18:08:35,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:08:26" (2/3) ... [2018-09-14 18:08:35,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e68ce89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:08:35, skipping insertion in model container [2018-09-14 18:08:35,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:08:35" (3/3) ... [2018-09-14 18:08:35,430 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label02_true-unreach-call.c [2018-09-14 18:08:35,438 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 18:08:35,446 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 18:08:35,508 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 18:08:35,509 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 18:08:35,509 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 18:08:35,509 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 18:08:35,509 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 18:08:35,509 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 18:08:35,509 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 18:08:35,510 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 18:08:35,510 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 18:08:35,549 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-09-14 18:08:35,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-14 18:08:35,567 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:08:35,568 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:08:35,569 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:08:35,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1847175428, now seen corresponding path program 1 times [2018-09-14 18:08:35,576 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:08:35,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:08:35,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:08:35,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:08:35,629 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:08:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:08:36,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:08:36,172 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:08:36,172 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 18:08:36,172 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:08:36,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:08:36,196 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:08:36,197 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:08:36,200 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-09-14 18:08:43,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:08:43,450 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-09-14 18:08:43,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:08:43,455 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2018-09-14 18:08:43,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:08:43,492 INFO L225 Difference]: With dead ends: 2251 [2018-09-14 18:08:43,493 INFO L226 Difference]: Without dead ends: 1474 [2018-09-14 18:08:43,504 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:08:43,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-09-14 18:08:43,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-09-14 18:08:43,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-09-14 18:08:43,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-09-14 18:08:43,686 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 68 [2018-09-14 18:08:43,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:08:43,687 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-09-14 18:08:43,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:08:43,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-09-14 18:08:43,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-14 18:08:43,703 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:08:43,703 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:08:43,704 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:08:43,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1532118751, now seen corresponding path program 1 times [2018-09-14 18:08:43,704 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:08:43,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:08:43,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:08:43,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:08:43,708 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:08:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:08:44,074 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:08:44,200 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:08:44,201 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:08:44,201 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:08:44,201 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:08:44,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:08:44,204 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:08:44,204 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:08:44,204 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-09-14 18:08:52,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:08:52,818 INFO L93 Difference]: Finished difference Result 4422 states and 8490 transitions. [2018-09-14 18:08:52,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:08:52,825 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-09-14 18:08:52,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:08:52,846 INFO L225 Difference]: With dead ends: 4422 [2018-09-14 18:08:52,846 INFO L226 Difference]: Without dead ends: 2954 [2018-09-14 18:08:52,851 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:08:52,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-09-14 18:08:52,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2928. [2018-09-14 18:08:52,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-09-14 18:08:52,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5043 transitions. [2018-09-14 18:08:52,942 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5043 transitions. Word has length 143 [2018-09-14 18:08:52,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:08:52,943 INFO L480 AbstractCegarLoop]: Abstraction has 2928 states and 5043 transitions. [2018-09-14 18:08:52,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:08:52,943 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5043 transitions. [2018-09-14 18:08:52,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-09-14 18:08:52,949 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:08:52,950 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:08:52,950 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:08:52,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1969176313, now seen corresponding path program 1 times [2018-09-14 18:08:52,952 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:08:52,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:08:52,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:08:52,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:08:52,954 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:08:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:08:53,183 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:08:53,184 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:08:53,184 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:08:53,184 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:08:53,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:08:53,185 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:08:53,185 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:08:53,185 INFO L87 Difference]: Start difference. First operand 2928 states and 5043 transitions. Second operand 6 states. [2018-09-14 18:09:06,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:09:06,286 INFO L93 Difference]: Finished difference Result 11887 states and 21681 transitions. [2018-09-14 18:09:06,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-14 18:09:06,291 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2018-09-14 18:09:06,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:09:06,366 INFO L225 Difference]: With dead ends: 11887 [2018-09-14 18:09:06,366 INFO L226 Difference]: Without dead ends: 8965 [2018-09-14 18:09:06,397 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-14 18:09:06,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8965 states. [2018-09-14 18:09:06,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8965 to 8893. [2018-09-14 18:09:06,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8893 states. [2018-09-14 18:09:06,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8893 states to 8893 states and 13539 transitions. [2018-09-14 18:09:06,665 INFO L78 Accepts]: Start accepts. Automaton has 8893 states and 13539 transitions. Word has length 155 [2018-09-14 18:09:06,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:09:06,666 INFO L480 AbstractCegarLoop]: Abstraction has 8893 states and 13539 transitions. [2018-09-14 18:09:06,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:09:06,666 INFO L276 IsEmpty]: Start isEmpty. Operand 8893 states and 13539 transitions. [2018-09-14 18:09:06,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-09-14 18:09:06,671 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:09:06,672 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-14 18:09:06,672 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:09:06,672 INFO L82 PathProgramCache]: Analyzing trace with hash 642429817, now seen corresponding path program 1 times [2018-09-14 18:09:06,672 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:09:06,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:09:06,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:09:06,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:09:06,674 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:09:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:09:06,887 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 122 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:09:06,888 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:09:06,888 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:09:06,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:09:06,897 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:09:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:09:06,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:09:07,597 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-14 18:09:07,597 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:09:08,270 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 122 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:09:08,291 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:09:08,292 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-09-14 18:09:08,292 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:09:08,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:09:08,293 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:09:08,293 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-09-14 18:09:08,293 INFO L87 Difference]: Start difference. First operand 8893 states and 13539 transitions. Second operand 5 states. [2018-09-14 18:09:14,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:09:14,797 INFO L93 Difference]: Finished difference Result 22322 states and 34480 transitions. [2018-09-14 18:09:14,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:09:14,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2018-09-14 18:09:14,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:09:14,877 INFO L225 Difference]: With dead ends: 22322 [2018-09-14 18:09:14,877 INFO L226 Difference]: Without dead ends: 13435 [2018-09-14 18:09:14,913 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 445 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2018-09-14 18:09:14,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13435 states. [2018-09-14 18:09:15,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13435 to 13390. [2018-09-14 18:09:15,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13390 states. [2018-09-14 18:09:15,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13390 states to 13390 states and 19353 transitions. [2018-09-14 18:09:15,309 INFO L78 Accepts]: Start accepts. Automaton has 13390 states and 19353 transitions. Word has length 225 [2018-09-14 18:09:15,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:09:15,309 INFO L480 AbstractCegarLoop]: Abstraction has 13390 states and 19353 transitions. [2018-09-14 18:09:15,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:09:15,310 INFO L276 IsEmpty]: Start isEmpty. Operand 13390 states and 19353 transitions. [2018-09-14 18:09:15,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-09-14 18:09:15,319 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:09:15,320 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:09:15,320 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:09:15,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1278893676, now seen corresponding path program 1 times [2018-09-14 18:09:15,322 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:09:15,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:09:15,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:09:15,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:09:15,325 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:09:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:09:15,893 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:09:15,894 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:09:15,894 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:09:16,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:09:16,067 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:09:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:09:16,169 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:09:16,533 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:09:16,533 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:09:16,766 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 18:09:17,047 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:09:17,068 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:09:17,069 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 4 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:09:17,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:09:17,085 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:09:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:09:17,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:09:17,571 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:09:17,571 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:09:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:09:17,869 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:09:17,870 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-14 18:09:17,870 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:09:17,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:09:17,872 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:09:17,872 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-09-14 18:09:17,873 INFO L87 Difference]: Start difference. First operand 13390 states and 19353 transitions. Second operand 9 states. [2018-09-14 18:09:32,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:09:32,089 INFO L93 Difference]: Finished difference Result 46994 states and 83071 transitions. [2018-09-14 18:09:32,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-14 18:09:32,090 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 286 [2018-09-14 18:09:32,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:09:32,335 INFO L225 Difference]: With dead ends: 46994 [2018-09-14 18:09:32,336 INFO L226 Difference]: Without dead ends: 33610 [2018-09-14 18:09:32,460 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1165 GetRequests, 1141 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2018-09-14 18:09:32,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33610 states. [2018-09-14 18:09:33,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33610 to 33313. [2018-09-14 18:09:33,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33313 states. [2018-09-14 18:09:33,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33313 states to 33313 states and 52952 transitions. [2018-09-14 18:09:33,885 INFO L78 Accepts]: Start accepts. Automaton has 33313 states and 52952 transitions. Word has length 286 [2018-09-14 18:09:33,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:09:33,886 INFO L480 AbstractCegarLoop]: Abstraction has 33313 states and 52952 transitions. [2018-09-14 18:09:33,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:09:33,886 INFO L276 IsEmpty]: Start isEmpty. Operand 33313 states and 52952 transitions. [2018-09-14 18:09:33,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-09-14 18:09:33,898 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:09:33,899 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:09:33,899 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:09:33,899 INFO L82 PathProgramCache]: Analyzing trace with hash 910952478, now seen corresponding path program 1 times [2018-09-14 18:09:33,900 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:09:33,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:09:33,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:09:33,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:09:33,901 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:09:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:09:34,496 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 260 proven. 73 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 18:09:34,497 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:09:34,497 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:09:34,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:09:34,512 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:09:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:09:34,609 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:09:34,819 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 354 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-14 18:09:34,819 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:09:35,068 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 260 proven. 73 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 18:09:35,088 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:09:35,089 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 6 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:09:35,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:09:35,104 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:09:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:09:35,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:09:35,393 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 354 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-14 18:09:35,393 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:09:35,532 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 260 proven. 73 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 18:09:35,534 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:09:35,534 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 18:09:35,534 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:09:35,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:09:35,535 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:09:35,536 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 18:09:35,536 INFO L87 Difference]: Start difference. First operand 33313 states and 52952 transitions. Second operand 9 states. [2018-09-14 18:09:50,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:09:50,365 INFO L93 Difference]: Finished difference Result 123030 states and 275713 transitions. [2018-09-14 18:09:50,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-14 18:09:50,365 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 352 [2018-09-14 18:09:50,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:09:51,632 INFO L225 Difference]: With dead ends: 123030 [2018-09-14 18:09:51,632 INFO L226 Difference]: Without dead ends: 77360 [2018-09-14 18:09:53,179 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1430 GetRequests, 1405 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-09-14 18:09:53,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77360 states. [2018-09-14 18:09:55,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77360 to 76366. [2018-09-14 18:09:55,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76366 states. [2018-09-14 18:09:56,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76366 states to 76366 states and 121117 transitions. [2018-09-14 18:09:56,630 INFO L78 Accepts]: Start accepts. Automaton has 76366 states and 121117 transitions. Word has length 352 [2018-09-14 18:09:56,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:09:56,630 INFO L480 AbstractCegarLoop]: Abstraction has 76366 states and 121117 transitions. [2018-09-14 18:09:56,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:09:56,631 INFO L276 IsEmpty]: Start isEmpty. Operand 76366 states and 121117 transitions. [2018-09-14 18:09:56,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2018-09-14 18:09:56,658 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:09:56,658 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:09:56,659 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:09:56,659 INFO L82 PathProgramCache]: Analyzing trace with hash -442739913, now seen corresponding path program 1 times [2018-09-14 18:09:56,659 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:09:56,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:09:56,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:09:56,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:09:56,660 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:09:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:09:57,057 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:09:58,419 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 122 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:09:58,420 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:09:58,420 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:09:58,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:09:58,434 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:09:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:09:58,565 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:09:58,970 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-14 18:09:58,971 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:09:59,396 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 122 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:09:59,416 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:09:59,417 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 18:09:59,417 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:09:59,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:09:59,418 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:09:59,418 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-09-14 18:09:59,418 INFO L87 Difference]: Start difference. First operand 76366 states and 121117 transitions. Second operand 5 states. [2018-09-14 18:10:08,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:10:08,569 INFO L93 Difference]: Finished difference Result 159393 states and 254584 transitions. [2018-09-14 18:10:08,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 18:10:08,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 487 [2018-09-14 18:10:08,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:10:09,393 INFO L225 Difference]: With dead ends: 159393 [2018-09-14 18:10:09,394 INFO L226 Difference]: Without dead ends: 83038 [2018-09-14 18:10:10,041 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 983 GetRequests, 970 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:10:10,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83038 states. [2018-09-14 18:10:12,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83038 to 83004. [2018-09-14 18:10:12,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83004 states. [2018-09-14 18:10:13,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83004 states to 83004 states and 127085 transitions. [2018-09-14 18:10:13,651 INFO L78 Accepts]: Start accepts. Automaton has 83004 states and 127085 transitions. Word has length 487 [2018-09-14 18:10:13,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:10:13,652 INFO L480 AbstractCegarLoop]: Abstraction has 83004 states and 127085 transitions. [2018-09-14 18:10:13,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:10:13,653 INFO L276 IsEmpty]: Start isEmpty. Operand 83004 states and 127085 transitions. [2018-09-14 18:10:13,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2018-09-14 18:10:13,673 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:10:13,674 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:10:13,674 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:10:13,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1088306046, now seen corresponding path program 1 times [2018-09-14 18:10:13,675 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:10:13,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:10:13,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:10:13,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:10:13,676 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:10:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:10:14,223 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 309 proven. 86 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 18:10:14,223 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:10:14,223 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:10:14,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:10:14,232 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:10:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:10:14,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:10:14,574 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-14 18:10:14,575 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:10:15,561 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 309 proven. 86 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 18:10:15,583 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:10:15,583 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:10:15,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:10:15,598 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:10:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:10:15,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:10:16,128 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-14 18:10:16,128 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:10:16,427 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 309 proven. 86 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 18:10:16,429 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:10:16,430 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 13 [2018-09-14 18:10:16,430 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:10:16,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:10:16,431 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:10:16,431 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-14 18:10:16,432 INFO L87 Difference]: Start difference. First operand 83004 states and 127085 transitions. Second operand 9 states. [2018-09-14 18:10:26,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:10:26,174 INFO L93 Difference]: Finished difference Result 158296 states and 246559 transitions. [2018-09-14 18:10:26,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 18:10:26,174 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 514 [2018-09-14 18:10:26,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:10:26,805 INFO L225 Difference]: With dead ends: 158296 [2018-09-14 18:10:26,805 INFO L226 Difference]: Without dead ends: 83172 [2018-09-14 18:10:27,528 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2072 GetRequests, 2050 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2018-09-14 18:10:27,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83172 states. [2018-09-14 18:10:29,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83172 to 82942. [2018-09-14 18:10:29,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82942 states. [2018-09-14 18:10:29,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82942 states to 82942 states and 114251 transitions. [2018-09-14 18:10:29,774 INFO L78 Accepts]: Start accepts. Automaton has 82942 states and 114251 transitions. Word has length 514 [2018-09-14 18:10:29,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:10:29,775 INFO L480 AbstractCegarLoop]: Abstraction has 82942 states and 114251 transitions. [2018-09-14 18:10:29,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:10:29,776 INFO L276 IsEmpty]: Start isEmpty. Operand 82942 states and 114251 transitions. [2018-09-14 18:10:29,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2018-09-14 18:10:29,788 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:10:29,789 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:10:29,789 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:10:29,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1269184876, now seen corresponding path program 1 times [2018-09-14 18:10:29,789 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:10:29,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:10:29,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:10:29,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:10:29,791 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:10:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:10:30,300 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-14 18:10:30,301 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:10:30,301 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:10:30,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:10:30,310 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:10:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:10:30,471 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:10:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-14 18:10:31,347 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:10:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-14 18:10:31,650 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:10:31,651 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:10:31,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:10:31,667 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:10:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:10:32,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:10:32,469 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-14 18:10:32,469 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:10:36,062 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-14 18:10:36,065 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:10:36,065 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 18:10:36,066 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:10:36,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:10:36,067 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:10:36,067 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 18:10:36,068 INFO L87 Difference]: Start difference. First operand 82942 states and 114251 transitions. Second operand 9 states. [2018-09-14 18:10:50,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:10:50,648 INFO L93 Difference]: Finished difference Result 227892 states and 414852 transitions. [2018-09-14 18:10:50,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-14 18:10:50,650 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 674 [2018-09-14 18:10:50,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:10:51,446 INFO L225 Difference]: With dead ends: 227892 [2018-09-14 18:10:51,446 INFO L226 Difference]: Without dead ends: 109798 [2018-09-14 18:10:53,294 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2723 GetRequests, 2695 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2018-09-14 18:10:53,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109798 states. [2018-09-14 18:10:55,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109798 to 108867. [2018-09-14 18:10:55,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108867 states. [2018-09-14 18:10:56,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108867 states to 108867 states and 176516 transitions. [2018-09-14 18:10:56,522 INFO L78 Accepts]: Start accepts. Automaton has 108867 states and 176516 transitions. Word has length 674 [2018-09-14 18:10:56,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:10:56,524 INFO L480 AbstractCegarLoop]: Abstraction has 108867 states and 176516 transitions. [2018-09-14 18:10:56,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:10:56,524 INFO L276 IsEmpty]: Start isEmpty. Operand 108867 states and 176516 transitions. [2018-09-14 18:10:56,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2018-09-14 18:10:56,536 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:10:56,537 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:10:56,537 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:10:56,538 INFO L82 PathProgramCache]: Analyzing trace with hash -2016710888, now seen corresponding path program 1 times [2018-09-14 18:10:56,538 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:10:56,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:10:56,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:10:56,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:10:56,539 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:10:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:10:57,870 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2018-09-14 18:10:57,871 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:10:57,871 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:10:57,871 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:10:57,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:10:57,872 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:10:57,872 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:10:57,873 INFO L87 Difference]: Start difference. First operand 108867 states and 176516 transitions. Second operand 4 states. [2018-09-14 18:11:05,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:11:05,388 INFO L93 Difference]: Finished difference Result 213405 states and 341954 transitions. [2018-09-14 18:11:05,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:11:05,389 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 719 [2018-09-14 18:11:05,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:11:05,774 INFO L225 Difference]: With dead ends: 213405 [2018-09-14 18:11:05,774 INFO L226 Difference]: Without dead ends: 104024 [2018-09-14 18:11:06,097 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:11:06,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104024 states. [2018-09-14 18:11:08,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104024 to 104010. [2018-09-14 18:11:08,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104010 states. [2018-09-14 18:11:09,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104010 states to 104010 states and 150359 transitions. [2018-09-14 18:11:09,194 INFO L78 Accepts]: Start accepts. Automaton has 104010 states and 150359 transitions. Word has length 719 [2018-09-14 18:11:09,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:11:09,195 INFO L480 AbstractCegarLoop]: Abstraction has 104010 states and 150359 transitions. [2018-09-14 18:11:09,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:11:09,195 INFO L276 IsEmpty]: Start isEmpty. Operand 104010 states and 150359 transitions. [2018-09-14 18:11:09,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2018-09-14 18:11:09,209 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:11:09,210 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:11:09,210 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:11:09,210 INFO L82 PathProgramCache]: Analyzing trace with hash 860135532, now seen corresponding path program 1 times [2018-09-14 18:11:09,210 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:11:09,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:11:09,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:11:09,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:11:09,212 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:11:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:11:09,525 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:11:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 183 proven. 236 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-09-14 18:11:10,239 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:11:10,239 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:11:10,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:11:10,247 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:11:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:11:10,446 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:11:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 301 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-09-14 18:11:11,301 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:11:11,946 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 183 proven. 170 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2018-09-14 18:11:11,968 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:11:11,968 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 3] total 9 [2018-09-14 18:11:11,969 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:11:11,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:11:11,970 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:11:11,970 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:11:11,970 INFO L87 Difference]: Start difference. First operand 104010 states and 150359 transitions. Second operand 3 states. [2018-09-14 18:11:17,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:11:17,278 INFO L93 Difference]: Finished difference Result 215541 states and 314153 transitions. [2018-09-14 18:11:17,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:11:17,278 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 762 [2018-09-14 18:11:17,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:11:17,816 INFO L225 Difference]: With dead ends: 215541 [2018-09-14 18:11:17,816 INFO L226 Difference]: Without dead ends: 107157 [2018-09-14 18:11:18,239 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1531 GetRequests, 1523 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:11:18,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107157 states. [2018-09-14 18:11:20,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107157 to 107157. [2018-09-14 18:11:20,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107157 states. [2018-09-14 18:11:21,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107157 states to 107157 states and 153559 transitions. [2018-09-14 18:11:21,235 INFO L78 Accepts]: Start accepts. Automaton has 107157 states and 153559 transitions. Word has length 762 [2018-09-14 18:11:21,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:11:21,236 INFO L480 AbstractCegarLoop]: Abstraction has 107157 states and 153559 transitions. [2018-09-14 18:11:21,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:11:21,236 INFO L276 IsEmpty]: Start isEmpty. Operand 107157 states and 153559 transitions. [2018-09-14 18:11:21,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2018-09-14 18:11:21,243 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:11:21,244 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:11:21,244 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:11:21,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1815146733, now seen corresponding path program 1 times [2018-09-14 18:11:21,245 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:11:21,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:11:21,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:11:21,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:11:21,246 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:11:21,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:11:21,732 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:11:23,020 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 181 proven. 250 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-09-14 18:11:23,020 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:11:23,020 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:11:23,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:11:23,029 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:11:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:11:23,200 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:11:23,603 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked. [2018-09-14 18:11:23,604 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:11:23,954 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked. [2018-09-14 18:11:23,975 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 18:11:23,976 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2018-09-14 18:11:23,976 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:11:23,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:11:23,977 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:11:23,977 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-14 18:11:23,977 INFO L87 Difference]: Start difference. First operand 107157 states and 153559 transitions. Second operand 3 states. [2018-09-14 18:11:31,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:11:31,642 INFO L93 Difference]: Finished difference Result 246706 states and 353744 transitions. [2018-09-14 18:11:31,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:11:31,642 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 761 [2018-09-14 18:11:31,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:11:32,211 INFO L225 Difference]: With dead ends: 246706 [2018-09-14 18:11:32,211 INFO L226 Difference]: Without dead ends: 138894 [2018-09-14 18:11:32,569 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1532 GetRequests, 1522 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-14 18:11:32,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138894 states. [2018-09-14 18:11:35,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138894 to 138889. [2018-09-14 18:11:35,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138889 states. [2018-09-14 18:11:36,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138889 states to 138889 states and 192014 transitions. [2018-09-14 18:11:36,978 INFO L78 Accepts]: Start accepts. Automaton has 138889 states and 192014 transitions. Word has length 761 [2018-09-14 18:11:36,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:11:36,979 INFO L480 AbstractCegarLoop]: Abstraction has 138889 states and 192014 transitions. [2018-09-14 18:11:36,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:11:36,979 INFO L276 IsEmpty]: Start isEmpty. Operand 138889 states and 192014 transitions. [2018-09-14 18:11:37,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1268 [2018-09-14 18:11:37,109 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:11:37,110 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:11:37,110 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:11:37,110 INFO L82 PathProgramCache]: Analyzing trace with hash 203545900, now seen corresponding path program 1 times [2018-09-14 18:11:37,110 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:11:37,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:11:37,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:11:37,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:11:37,112 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:11:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:11:37,835 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:11:39,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1700 backedges. 503 proven. 455 refuted. 0 times theorem prover too weak. 742 trivial. 0 not checked. [2018-09-14 18:11:39,584 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:11:39,584 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:11:39,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:11:39,593 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:11:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:11:39,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:11:40,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1700 backedges. 1257 proven. 2 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2018-09-14 18:11:40,982 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:11:41,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1700 backedges. 594 proven. 89 refuted. 0 times theorem prover too weak. 1017 trivial. 0 not checked. [2018-09-14 18:11:41,639 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:11:41,639 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:11:41,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:11:41,656 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:11:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:11:42,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:11:43,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1700 backedges. 1257 proven. 2 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2018-09-14 18:11:43,213 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:11:43,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1700 backedges. 594 proven. 89 refuted. 0 times theorem prover too weak. 1017 trivial. 0 not checked. [2018-09-14 18:11:43,950 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:11:43,952 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 5, 5] total 17 [2018-09-14 18:11:43,952 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:11:43,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-14 18:11:43,953 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-14 18:11:43,954 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2018-09-14 18:11:43,954 INFO L87 Difference]: Start difference. First operand 138889 states and 192014 transitions. Second operand 11 states. Received shutdown request... [2018-09-14 18:12:01,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-14 18:12:01,877 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 18:12:01,884 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 18:12:01,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 06:12:01 BoogieIcfgContainer [2018-09-14 18:12:01,884 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 18:12:01,885 INFO L168 Benchmark]: Toolchain (without parser) took 217871.78 ms. Allocated memory was 1.5 GB in the beginning and 5.0 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-09-14 18:12:01,886 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 18:12:01,887 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2024.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 169.1 MB). Peak memory consumption was 169.1 MB. Max. memory is 7.1 GB. [2018-09-14 18:12:01,887 INFO L168 Benchmark]: Boogie Procedure Inliner took 216.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-14 18:12:01,888 INFO L168 Benchmark]: Boogie Preprocessor took 599.75 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 869.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2018-09-14 18:12:01,889 INFO L168 Benchmark]: RCFGBuilder took 8561.62 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 499.2 MB). Peak memory consumption was 499.2 MB. Max. memory is 7.1 GB. [2018-09-14 18:12:01,890 INFO L168 Benchmark]: TraceAbstraction took 206461.91 ms. Allocated memory was 2.4 GB in the beginning and 5.0 GB in the end (delta: 2.6 GB). Free memory was 1.8 GB in the beginning and 2.9 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-09-14 18:12:01,895 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2024.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 169.1 MB). Peak memory consumption was 169.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 216.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 599.75 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 869.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8561.62 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 499.2 MB). Peak memory consumption was 499.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206461.91 ms. Allocated memory was 2.4 GB in the beginning and 5.0 GB in the end (delta: 2.6 GB). Free memory was 1.8 GB in the beginning and 2.9 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 192]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 192). Cancelled while BasicCegarLoop was constructing difference of abstraction (138889states) and FLOYD_HOARE automaton (currently 34 states, 11 states before enhancement), while ReachableStatesComputation was computing reachable states (297217 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 206.3s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 147.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3286 SDtfs, 42093 SDslu, 2177 SDs, 0 SdLazy, 78994 SolverSat, 17556 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 88.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17059 GetRequests, 16843 SyntacticMatches, 38 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 8.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138889occurred in iteration=12, 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: 25.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 2648 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 23.4s InterpolantComputationTime, 14834 NumberOfCodeBlocks, 14834 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 23214 ConstructedInterpolants, 0 QuantifiedInterpolants, 32461975 SizeOfPredicates, 11 NumberOfNonLiveVariables, 11818 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 41 InterpolantComputations, 9 PerfectInterpolantSequences, 19750/21842 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/Problem18_label02_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_18-12-01-921.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label02_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_18-12-01-921.csv Completed graceful shutdown