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/Problem13_label42_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:33:27,332 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:33:27,334 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:33:27,351 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:33:27,351 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:33:27,353 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:33:27,355 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:33:27,357 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:33:27,360 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:33:27,361 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:33:27,369 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:33:27,369 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:33:27,370 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:33:27,371 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:33:27,372 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:33:27,373 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:33:27,379 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:33:27,382 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:33:27,386 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:33:27,388 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:33:27,389 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:33:27,392 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:33:27,397 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:33:27,397 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:33:27,397 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:33:27,400 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:33:27,401 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:33:27,402 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:33:27,403 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:33:27,405 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:33:27,405 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:33:27,406 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:33:27,408 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:33:27,408 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:33:27,410 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:33:27,411 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:33:27,411 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 17:33:27,431 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:33:27,431 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:33:27,432 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:33:27,433 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:33:27,434 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:33:27,434 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:33:27,434 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:33:27,434 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:33:27,434 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:33:27,435 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:33:27,435 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:33:27,436 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:33:27,436 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:33:27,436 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:33:27,437 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:33:27,437 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:33:27,437 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:33:27,437 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:33:27,437 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:33:27,437 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:33:27,438 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:33:27,438 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:33:27,438 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:33:27,440 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:33:27,440 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:33:27,440 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:33:27,440 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:33:27,441 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:33:27,441 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:33:27,441 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:33:27,441 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:33:27,441 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:33:27,441 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:33:27,504 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:33:27,520 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:33:27,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:33:27,525 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:33:27,525 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:33:27,526 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label42_true-unreach-call.c [2018-09-14 17:33:27,781 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d15ea4f6c/e82e5cfe91f34027b1378922b1be8750/FLAGa428a2dcc [2018-09-14 17:33:28,421 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:33:28,422 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label42_true-unreach-call.c [2018-09-14 17:33:28,462 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d15ea4f6c/e82e5cfe91f34027b1378922b1be8750/FLAGa428a2dcc [2018-09-14 17:33:28,482 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d15ea4f6c/e82e5cfe91f34027b1378922b1be8750 [2018-09-14 17:33:28,494 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:33:28,499 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:33:28,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:33:28,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:33:28,509 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:33:28,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:33:28" (1/1) ... [2018-09-14 17:33:28,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bb9db92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:33:28, skipping insertion in model container [2018-09-14 17:33:28,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:33:28" (1/1) ... [2018-09-14 17:33:28,528 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:33:29,974 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:33:29,996 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:33:31,135 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:33:31,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:33:31 WrapperNode [2018-09-14 17:33:31,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:33:31,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:33:31,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:33:31,543 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:33:31,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:33:31" (1/1) ... [2018-09-14 17:33:31,695 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:33:31" (1/1) ... [2018-09-14 17:33:31,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:33:31,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:33:31,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:33:31,904 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:33:32,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:33:31" (1/1) ... [2018-09-14 17:33:32,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:33:31" (1/1) ... [2018-09-14 17:33:32,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:33:31" (1/1) ... [2018-09-14 17:33:32,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:33:31" (1/1) ... [2018-09-14 17:33:33,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:33:31" (1/1) ... [2018-09-14 17:33:33,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:33:31" (1/1) ... [2018-09-14 17:33:33,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:33:31" (1/1) ... [2018-09-14 17:33:33,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:33:33,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:33:33,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:33:33,249 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:33:33,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:33:31" (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 17:33:33,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:33:33,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:33:33,326 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 17:33:33,326 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 17:33:33,326 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 17:33:33,326 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 17:33:33,326 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:33:33,326 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:33:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:33:33,327 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:33:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:33:33,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:33:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:33:33,327 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:33:44,923 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:33:44,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:33:44 BoogieIcfgContainer [2018-09-14 17:33:44,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:33:44,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:33:44,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:33:44,928 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:33:44,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:33:28" (1/3) ... [2018-09-14 17:33:44,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6de27d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:33:44, skipping insertion in model container [2018-09-14 17:33:44,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:33:31" (2/3) ... [2018-09-14 17:33:44,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6de27d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:33:44, skipping insertion in model container [2018-09-14 17:33:44,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:33:44" (3/3) ... [2018-09-14 17:33:44,932 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label42_true-unreach-call.c [2018-09-14 17:33:44,942 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:33:44,952 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:33:45,018 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:33:45,018 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:33:45,019 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:33:45,019 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:33:45,019 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:33:45,019 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:33:45,019 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:33:45,019 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:33:45,019 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:33:45,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-14 17:33:45,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-14 17:33:45,097 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:33:45,098 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:33:45,100 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:33:45,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1770921932, now seen corresponding path program 1 times [2018-09-14 17:33:45,107 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:33:45,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:45,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:45,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:45,159 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:33:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:45,698 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 17:33:45,701 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:33:45,701 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:33:45,702 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:33:45,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:33:45,726 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:33:45,727 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:33:45,729 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-09-14 17:34:02,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:34:02,027 INFO L93 Difference]: Finished difference Result 4105 states and 7669 transitions. [2018-09-14 17:34:02,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:34:02,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2018-09-14 17:34:02,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:34:02,090 INFO L225 Difference]: With dead ends: 4105 [2018-09-14 17:34:02,091 INFO L226 Difference]: Without dead ends: 2979 [2018-09-14 17:34:02,107 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:34:02,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2018-09-14 17:34:02,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2849. [2018-09-14 17:34:02,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2849 states. [2018-09-14 17:34:02,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 5075 transitions. [2018-09-14 17:34:02,346 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 5075 transitions. Word has length 72 [2018-09-14 17:34:02,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:34:02,347 INFO L480 AbstractCegarLoop]: Abstraction has 2849 states and 5075 transitions. [2018-09-14 17:34:02,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:34:02,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 5075 transitions. [2018-09-14 17:34:02,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-14 17:34:02,370 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:34:02,370 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:34:02,371 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:34:02,371 INFO L82 PathProgramCache]: Analyzing trace with hash -646362735, now seen corresponding path program 1 times [2018-09-14 17:34:02,371 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:34:02,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:34:02,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:34:02,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:34:02,374 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:34:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:34:02,671 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:34:02,915 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:34:02,915 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:34:02,915 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:34:02,916 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:34:02,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:34:02,918 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:34:02,918 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:34:02,918 INFO L87 Difference]: Start difference. First operand 2849 states and 5075 transitions. Second operand 6 states. [2018-09-14 17:34:16,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:34:16,330 INFO L93 Difference]: Finished difference Result 8249 states and 15059 transitions. [2018-09-14 17:34:16,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:34:16,330 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-09-14 17:34:16,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:34:16,366 INFO L225 Difference]: With dead ends: 8249 [2018-09-14 17:34:16,366 INFO L226 Difference]: Without dead ends: 5406 [2018-09-14 17:34:16,378 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:34:16,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5406 states. [2018-09-14 17:34:16,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5406 to 5361. [2018-09-14 17:34:16,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5361 states. [2018-09-14 17:34:16,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5361 states to 5361 states and 8751 transitions. [2018-09-14 17:34:16,523 INFO L78 Accepts]: Start accepts. Automaton has 5361 states and 8751 transitions. Word has length 143 [2018-09-14 17:34:16,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:34:16,524 INFO L480 AbstractCegarLoop]: Abstraction has 5361 states and 8751 transitions. [2018-09-14 17:34:16,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:34:16,524 INFO L276 IsEmpty]: Start isEmpty. Operand 5361 states and 8751 transitions. [2018-09-14 17:34:16,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-14 17:34:16,528 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:34:16,529 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:34:16,529 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:34:16,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1327608448, now seen corresponding path program 1 times [2018-09-14 17:34:16,529 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:34:16,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:34:16,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:34:16,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:34:16,531 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:34:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:34:16,795 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:34:16,795 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:34:16,795 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:34:16,796 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:34:16,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:34:16,797 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:34:16,797 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:34:16,797 INFO L87 Difference]: Start difference. First operand 5361 states and 8751 transitions. Second operand 6 states. [2018-09-14 17:34:30,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:34:30,450 INFO L93 Difference]: Finished difference Result 18313 states and 30872 transitions. [2018-09-14 17:34:30,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:34:30,450 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-09-14 17:34:30,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:34:30,515 INFO L225 Difference]: With dead ends: 18313 [2018-09-14 17:34:30,516 INFO L226 Difference]: Without dead ends: 12958 [2018-09-14 17:34:30,553 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:34:30,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12958 states. [2018-09-14 17:34:30,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12958 to 12892. [2018-09-14 17:34:30,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12892 states. [2018-09-14 17:34:30,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12892 states to 12892 states and 19349 transitions. [2018-09-14 17:34:30,904 INFO L78 Accepts]: Start accepts. Automaton has 12892 states and 19349 transitions. Word has length 146 [2018-09-14 17:34:30,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:34:30,904 INFO L480 AbstractCegarLoop]: Abstraction has 12892 states and 19349 transitions. [2018-09-14 17:34:30,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:34:30,904 INFO L276 IsEmpty]: Start isEmpty. Operand 12892 states and 19349 transitions. [2018-09-14 17:34:30,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-09-14 17:34:30,919 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:34:30,919 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-14 17:34:30,920 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:34:30,920 INFO L82 PathProgramCache]: Analyzing trace with hash 2095905532, now seen corresponding path program 1 times [2018-09-14 17:34:30,920 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:34:30,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:34:30,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:34:30,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:34:30,921 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:34:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:34:31,271 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 130 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:34:31,272 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:34:31,272 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 17:34:31,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:34:31,281 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:34:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:34:31,381 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:34:31,508 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-09-14 17:34:31,508 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:34:32,398 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 130 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:34:32,420 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:34:32,420 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-09-14 17:34:32,420 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:34:32,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:34:32,421 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:34:32,422 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:34:32,423 INFO L87 Difference]: Start difference. First operand 12892 states and 19349 transitions. Second operand 5 states. [2018-09-14 17:34:32,560 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-09-14 17:34:47,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:34:47,113 INFO L93 Difference]: Finished difference Result 38949 states and 63273 transitions. [2018-09-14 17:34:47,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:34:47,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2018-09-14 17:34:47,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:34:47,304 INFO L225 Difference]: With dead ends: 38949 [2018-09-14 17:34:47,305 INFO L226 Difference]: Without dead ends: 26063 [2018-09-14 17:34:47,379 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 452 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:34:47,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26063 states. [2018-09-14 17:34:48,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26063 to 25813. [2018-09-14 17:34:48,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25813 states. [2018-09-14 17:34:48,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25813 states to 25813 states and 38254 transitions. [2018-09-14 17:34:48,396 INFO L78 Accepts]: Start accepts. Automaton has 25813 states and 38254 transitions. Word has length 227 [2018-09-14 17:34:48,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:34:48,396 INFO L480 AbstractCegarLoop]: Abstraction has 25813 states and 38254 transitions. [2018-09-14 17:34:48,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:34:48,397 INFO L276 IsEmpty]: Start isEmpty. Operand 25813 states and 38254 transitions. [2018-09-14 17:34:48,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-09-14 17:34:48,424 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:34:48,424 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:34:48,425 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:34:48,425 INFO L82 PathProgramCache]: Analyzing trace with hash 879800449, now seen corresponding path program 1 times [2018-09-14 17:34:48,425 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:34:48,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:34:48,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:34:48,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:34:48,427 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:34:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:34:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:34:48,936 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:34:48,937 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:34:48,937 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:34:48,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:34:48,938 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:34:48,938 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:34:48,938 INFO L87 Difference]: Start difference. First operand 25813 states and 38254 transitions. Second operand 5 states. [2018-09-14 17:35:19,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:35:19,196 INFO L93 Difference]: Finished difference Result 71853 states and 113121 transitions. [2018-09-14 17:35:19,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:35:19,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 272 [2018-09-14 17:35:19,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:35:19,422 INFO L225 Difference]: With dead ends: 71853 [2018-09-14 17:35:19,422 INFO L226 Difference]: Without dead ends: 46046 [2018-09-14 17:35:19,494 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:35:19,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46046 states. [2018-09-14 17:35:20,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46046 to 45853. [2018-09-14 17:35:20,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45853 states. [2018-09-14 17:35:20,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45853 states to 45853 states and 71373 transitions. [2018-09-14 17:35:20,645 INFO L78 Accepts]: Start accepts. Automaton has 45853 states and 71373 transitions. Word has length 272 [2018-09-14 17:35:20,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:35:20,646 INFO L480 AbstractCegarLoop]: Abstraction has 45853 states and 71373 transitions. [2018-09-14 17:35:20,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:35:20,646 INFO L276 IsEmpty]: Start isEmpty. Operand 45853 states and 71373 transitions. [2018-09-14 17:35:20,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-09-14 17:35:20,680 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:35:20,681 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2018-09-14 17:35:20,681 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:35:20,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1833674880, now seen corresponding path program 1 times [2018-09-14 17:35:20,682 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:35:20,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:35:20,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:35:20,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:35:20,683 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:35:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:35:21,412 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 207 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:35:21,412 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:35:21,412 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 17:35:21,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:35:21,421 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:35:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:35:21,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:35:21,625 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:35:21,625 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:35:22,645 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:35:22,681 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 17:35:22,681 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2018-09-14 17:35:22,681 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:35:22,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:35:22,683 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:35:22,683 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:35:22,683 INFO L87 Difference]: Start difference. First operand 45853 states and 71373 transitions. Second operand 3 states. [2018-09-14 17:35:29,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:35:29,507 INFO L93 Difference]: Finished difference Result 101411 states and 159778 transitions. [2018-09-14 17:35:29,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:35:29,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 283 [2018-09-14 17:35:29,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:35:29,712 INFO L225 Difference]: With dead ends: 101411 [2018-09-14 17:35:29,712 INFO L226 Difference]: Without dead ends: 56375 [2018-09-14 17:35:29,840 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 565 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:35:29,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56375 states. [2018-09-14 17:35:30,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56375 to 52351. [2018-09-14 17:35:30,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52351 states. [2018-09-14 17:35:30,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52351 states to 52351 states and 74050 transitions. [2018-09-14 17:35:30,882 INFO L78 Accepts]: Start accepts. Automaton has 52351 states and 74050 transitions. Word has length 283 [2018-09-14 17:35:30,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:35:30,883 INFO L480 AbstractCegarLoop]: Abstraction has 52351 states and 74050 transitions. [2018-09-14 17:35:30,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:35:30,883 INFO L276 IsEmpty]: Start isEmpty. Operand 52351 states and 74050 transitions. [2018-09-14 17:35:30,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-09-14 17:35:30,915 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:35:30,915 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:35:30,916 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:35:30,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1212497744, now seen corresponding path program 1 times [2018-09-14 17:35:30,916 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:35:30,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:35:30,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:35:30,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:35:30,917 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:35:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:35:31,609 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 195 proven. 140 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-14 17:35:31,610 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:35:31,610 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:35:31,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:35:31,618 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:35:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:35:31,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:35:32,186 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2018-09-14 17:35:32,186 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:35:33,172 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 195 proven. 140 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-14 17:35:33,192 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:35:33,193 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-09-14 17:35:33,193 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:35:33,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:35:33,194 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:35:33,194 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:35:33,194 INFO L87 Difference]: Start difference. First operand 52351 states and 74050 transitions. Second operand 5 states. [2018-09-14 17:35:52,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:35:52,694 INFO L93 Difference]: Finished difference Result 160463 states and 243288 transitions. [2018-09-14 17:35:52,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:35:52,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 305 [2018-09-14 17:35:52,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:35:53,104 INFO L225 Difference]: With dead ends: 160463 [2018-09-14 17:35:53,104 INFO L226 Difference]: Without dead ends: 108118 [2018-09-14 17:35:53,255 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 605 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:35:53,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108118 states. [2018-09-14 17:35:54,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108118 to 107673. [2018-09-14 17:35:54,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107673 states. [2018-09-14 17:35:56,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107673 states to 107673 states and 143385 transitions. [2018-09-14 17:35:56,279 INFO L78 Accepts]: Start accepts. Automaton has 107673 states and 143385 transitions. Word has length 305 [2018-09-14 17:35:56,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:35:56,280 INFO L480 AbstractCegarLoop]: Abstraction has 107673 states and 143385 transitions. [2018-09-14 17:35:56,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:35:56,280 INFO L276 IsEmpty]: Start isEmpty. Operand 107673 states and 143385 transitions. [2018-09-14 17:35:56,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2018-09-14 17:35:56,346 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:35:56,346 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-14 17:35:56,346 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:35:56,347 INFO L82 PathProgramCache]: Analyzing trace with hash -182250650, now seen corresponding path program 1 times [2018-09-14 17:35:56,347 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:35:56,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:35:56,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:35:56,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:35:56,349 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:35:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:35:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 277 proven. 78 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-09-14 17:35:56,990 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:35:56,990 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 17:35:57,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:35:57,007 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:35:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:35:57,124 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:35:57,596 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 366 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-09-14 17:35:57,597 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:35:57,877 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 17:35:58,071 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 277 proven. 78 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-09-14 17:35:58,092 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:35:58,092 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 17:35:58,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:35:58,110 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:35:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:35:58,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:35:58,679 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 366 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-09-14 17:35:58,679 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:35:59,528 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 277 proven. 78 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-09-14 17:35:59,531 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:35:59,531 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 17:35:59,531 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:35:59,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:35:59,532 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:35:59,533 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:35:59,533 INFO L87 Difference]: Start difference. First operand 107673 states and 143385 transitions. Second operand 9 states. [2018-09-14 17:36:24,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:36:24,214 INFO L93 Difference]: Finished difference Result 289197 states and 484228 transitions. [2018-09-14 17:36:24,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-14 17:36:24,214 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 355 [2018-09-14 17:36:24,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:36:25,033 INFO L225 Difference]: With dead ends: 289197 [2018-09-14 17:36:25,034 INFO L226 Difference]: Without dead ends: 182335 [2018-09-14 17:36:25,357 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1442 GetRequests, 1418 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-09-14 17:36:25,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182335 states. [2018-09-14 17:36:29,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182335 to 181416. [2018-09-14 17:36:29,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181416 states. [2018-09-14 17:36:29,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181416 states to 181416 states and 259794 transitions. [2018-09-14 17:36:29,904 INFO L78 Accepts]: Start accepts. Automaton has 181416 states and 259794 transitions. Word has length 355 [2018-09-14 17:36:29,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:36:29,904 INFO L480 AbstractCegarLoop]: Abstraction has 181416 states and 259794 transitions. [2018-09-14 17:36:29,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:36:29,904 INFO L276 IsEmpty]: Start isEmpty. Operand 181416 states and 259794 transitions. [2018-09-14 17:36:29,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-09-14 17:36:29,944 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:36:29,945 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:36:29,945 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:36:29,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1334331705, now seen corresponding path program 1 times [2018-09-14 17:36:29,948 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:36:29,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:36:29,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:36:29,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:36:29,949 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:36:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:36:30,502 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 195 proven. 153 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-09-14 17:36:30,503 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:36:30,503 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 17:36:30,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:36:30,518 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:36:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:36:30,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:36:30,895 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2018-09-14 17:36:30,895 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:36:31,153 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 195 proven. 153 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-09-14 17:36:31,173 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:36:31,174 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2018-09-14 17:36:31,174 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:36:31,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:36:31,175 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:36:31,175 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-14 17:36:31,176 INFO L87 Difference]: Start difference. First operand 181416 states and 259794 transitions. Second operand 5 states. [2018-09-14 17:36:52,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:36:52,474 INFO L93 Difference]: Finished difference Result 411443 states and 593677 transitions. [2018-09-14 17:36:52,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:36:52,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 356 [2018-09-14 17:36:52,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:36:53,254 INFO L225 Difference]: With dead ends: 411443 [2018-09-14 17:36:53,254 INFO L226 Difference]: Without dead ends: 230033 [2018-09-14 17:36:53,633 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 709 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:36:53,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230033 states. [2018-09-14 17:36:59,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230033 to 229092. [2018-09-14 17:36:59,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229092 states. Received shutdown request... [2018-09-14 17:37:09,887 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:37:09,892 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:37:09,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:37:09 BoogieIcfgContainer [2018-09-14 17:37:09,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:37:09,893 INFO L168 Benchmark]: Toolchain (without parser) took 221398.33 ms. Allocated memory was 1.5 GB in the beginning and 5.2 GB in the end (delta: 3.6 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 3.9 GB. Max. memory is 7.1 GB. [2018-09-14 17:37:09,894 INFO L168 Benchmark]: CDTParser took 0.17 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 17:37:09,895 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3042.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 338.2 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. [2018-09-14 17:37:09,896 INFO L168 Benchmark]: Boogie Procedure Inliner took 360.34 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:37:09,896 INFO L168 Benchmark]: Boogie Preprocessor took 1345.45 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:37:09,897 INFO L168 Benchmark]: RCFGBuilder took 11675.15 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 157.3 MB). Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: -401.5 kB). Peak memory consumption was 743.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:37:09,898 INFO L168 Benchmark]: TraceAbstraction took 204967.73 ms. Allocated memory was 2.7 GB in the beginning and 5.2 GB in the end (delta: 2.5 GB). Free memory was 2.4 GB in the beginning and 3.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 3.7 GB. Max. memory is 7.1 GB. [2018-09-14 17:37:09,903 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 3042.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 338.2 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 360.34 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1345.45 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11675.15 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 157.3 MB). Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: -401.5 kB). Peak memory consumption was 743.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204967.73 ms. Allocated memory was 2.7 GB in the beginning and 5.2 GB in the end (delta: 2.5 GB). Free memory was 2.4 GB in the beginning and 3.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 3.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 207]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 207). Cancelled while ReachableStatesComputation was computing reachable states (227309 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 204.8s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 164.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4767 SDtfs, 31457 SDslu, 5004 SDs, 0 SdLazy, 60704 SolverSat, 13405 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 133.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3852 GetRequests, 3760 SyntacticMatches, 14 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=181416occurred in iteration=8, 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: 27.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 6072 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 9.9s InterpolantComputationTime, 4040 NumberOfCodeBlocks, 4040 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 5900 ConstructedInterpolants, 0 QuantifiedInterpolants, 4700306 SizeOfPredicates, 6 NumberOfNonLiveVariables, 3378 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 21 InterpolantComputations, 9 PerfectInterpolantSequences, 5204/6175 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/Problem13_label42_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-37-09-920.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label42_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-37-09-920.csv Completed graceful shutdown