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/Problem16_label42_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 12:06:01,391 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 12:06:01,393 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 12:06:01,406 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 12:06:01,406 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 12:06:01,407 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 12:06:01,409 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 12:06:01,410 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 12:06:01,412 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 12:06:01,413 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 12:06:01,414 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 12:06:01,414 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 12:06:01,415 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 12:06:01,416 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 12:06:01,417 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 12:06:01,418 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 12:06:01,419 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 12:06:01,421 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 12:06:01,423 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 12:06:01,425 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 12:06:01,426 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 12:06:01,427 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 12:06:01,430 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 12:06:01,430 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 12:06:01,430 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 12:06:01,431 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 12:06:01,433 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 12:06:01,433 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 12:06:01,434 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 12:06:01,435 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 12:06:01,436 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 12:06:01,436 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 12:06:01,437 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 12:06:01,437 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 12:06:01,438 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 12:06:01,439 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 12:06:01,439 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 12:06:01,467 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 12:06:01,467 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 12:06:01,468 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 12:06:01,469 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 12:06:01,469 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 12:06:01,469 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 12:06:01,469 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 12:06:01,469 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 12:06:01,470 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 12:06:01,470 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 12:06:01,470 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 12:06:01,470 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 12:06:01,471 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 12:06:01,472 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 12:06:01,472 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 12:06:01,472 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 12:06:01,472 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 12:06:01,472 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 12:06:01,473 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 12:06:01,473 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 12:06:01,473 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 12:06:01,473 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 12:06:01,475 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 12:06:01,475 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 12:06:01,476 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 12:06:01,476 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 12:06:01,476 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 12:06:01,476 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 12:06:01,476 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 12:06:01,477 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 12:06:01,477 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 12:06:01,477 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 12:06:01,477 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 12:06:01,477 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 12:06:01,526 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 12:06:01,539 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 12:06:01,542 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 12:06:01,544 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 12:06:01,544 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 12:06:01,545 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label42_true-unreach-call.c [2018-09-18 12:06:01,898 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f366adb4f/91f276537e3f4e819c53413cf6216101/FLAG4b19ffa35 [2018-09-18 12:06:02,295 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 12:06:02,296 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label42_true-unreach-call.c [2018-09-18 12:06:02,324 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f366adb4f/91f276537e3f4e819c53413cf6216101/FLAG4b19ffa35 [2018-09-18 12:06:02,344 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f366adb4f/91f276537e3f4e819c53413cf6216101 [2018-09-18 12:06:02,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 12:06:02,360 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 12:06:02,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 12:06:02,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 12:06:02,370 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 12:06:02,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:06:02" (1/1) ... [2018-09-18 12:06:02,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@462c0b2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:02, skipping insertion in model container [2018-09-18 12:06:02,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:06:02" (1/1) ... [2018-09-18 12:06:02,390 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 12:06:03,128 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:06:03,146 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 12:06:03,369 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:06:03,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:03 WrapperNode [2018-09-18 12:06:03,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 12:06:03,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 12:06:03,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 12:06:03,452 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 12:06:03,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:03" (1/1) ... [2018-09-18 12:06:03,513 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:03" (1/1) ... [2018-09-18 12:06:03,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 12:06:03,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 12:06:03,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 12:06:03,644 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 12:06:03,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:03" (1/1) ... [2018-09-18 12:06:03,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:03" (1/1) ... [2018-09-18 12:06:03,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:03" (1/1) ... [2018-09-18 12:06:03,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:03" (1/1) ... [2018-09-18 12:06:04,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:03" (1/1) ... [2018-09-18 12:06:04,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:03" (1/1) ... [2018-09-18 12:06:04,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:03" (1/1) ... [2018-09-18 12:06:04,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 12:06:04,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 12:06:04,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 12:06:04,089 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 12:06:04,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 12:06:04,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 12:06:04,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 12:06:04,158 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 12:06:04,158 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 12:06:04,158 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 12:06:04,159 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 12:06:04,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 12:06:04,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 12:06:04,159 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 12:06:04,159 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 12:06:09,980 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 12:06:09,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:06:09 BoogieIcfgContainer [2018-09-18 12:06:09,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 12:06:09,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 12:06:09,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 12:06:09,987 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 12:06:09,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:06:02" (1/3) ... [2018-09-18 12:06:09,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44fede85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:06:09, skipping insertion in model container [2018-09-18 12:06:09,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:03" (2/3) ... [2018-09-18 12:06:09,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44fede85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:06:09, skipping insertion in model container [2018-09-18 12:06:09,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:06:09" (3/3) ... [2018-09-18 12:06:09,991 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label42_true-unreach-call.c [2018-09-18 12:06:10,004 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 12:06:10,015 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 12:06:10,086 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 12:06:10,087 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 12:06:10,087 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 12:06:10,087 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 12:06:10,088 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 12:06:10,088 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 12:06:10,088 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 12:06:10,088 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 12:06:10,088 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 12:06:10,141 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-09-18 12:06:10,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-09-18 12:06:10,156 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:06:10,158 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] [2018-09-18 12:06:10,159 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:06:10,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1180093893, now seen corresponding path program 1 times [2018-09-18 12:06:10,169 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:06:10,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:10,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:10,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:10,232 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:06:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:06:10,730 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:06:10,731 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 12:06:10,731 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:06:10,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:06:10,755 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:06:10,756 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:06:10,759 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-09-18 12:06:14,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:06:14,616 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-09-18 12:06:14,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:06:14,622 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-09-18 12:06:14,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:06:14,648 INFO L225 Difference]: With dead ends: 1156 [2018-09-18 12:06:14,648 INFO L226 Difference]: Without dead ends: 744 [2018-09-18 12:06:14,659 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 [2018-09-18 12:06:14,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-09-18 12:06:14,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-09-18 12:06:14,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-09-18 12:06:14,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1353 transitions. [2018-09-18 12:06:14,799 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1353 transitions. Word has length 69 [2018-09-18 12:06:14,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:06:14,800 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1353 transitions. [2018-09-18 12:06:14,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:06:14,800 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1353 transitions. [2018-09-18 12:06:14,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-09-18 12:06:14,816 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:06:14,816 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:06:14,817 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:06:14,817 INFO L82 PathProgramCache]: Analyzing trace with hash 814141313, now seen corresponding path program 1 times [2018-09-18 12:06:14,817 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:06:14,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:14,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:14,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:14,819 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:06:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:15,230 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:06:15,230 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:06:15,230 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:06:15,231 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:06:15,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:06:15,233 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:06:15,233 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:06:15,234 INFO L87 Difference]: Start difference. First operand 744 states and 1353 transitions. Second operand 6 states. [2018-09-18 12:06:23,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:06:23,969 INFO L93 Difference]: Finished difference Result 2184 states and 3997 transitions. [2018-09-18 12:06:23,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:06:23,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2018-09-18 12:06:23,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:06:23,982 INFO L225 Difference]: With dead ends: 2184 [2018-09-18 12:06:23,982 INFO L226 Difference]: Without dead ends: 1446 [2018-09-18 12:06:23,988 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 [2018-09-18 12:06:23,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2018-09-18 12:06:24,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1425. [2018-09-18 12:06:24,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2018-09-18 12:06:24,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2267 transitions. [2018-09-18 12:06:24,054 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2267 transitions. Word has length 162 [2018-09-18 12:06:24,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:06:24,055 INFO L480 AbstractCegarLoop]: Abstraction has 1425 states and 2267 transitions. [2018-09-18 12:06:24,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:06:24,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2267 transitions. [2018-09-18 12:06:24,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-09-18 12:06:24,067 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:06:24,068 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, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:06:24,068 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:06:24,069 INFO L82 PathProgramCache]: Analyzing trace with hash -712455945, now seen corresponding path program 1 times [2018-09-18 12:06:24,069 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:06:24,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:24,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:24,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:24,070 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:06:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:24,350 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:06:24,351 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:06:24,351 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:06:24,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:24,361 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:06:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:24,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:06:25,001 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-09-18 12:06:25,001 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:06:25,415 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:06:25,454 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:06:25,454 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 12:06:25,455 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:06:25,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:06:25,460 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:06:25,460 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:06:25,461 INFO L87 Difference]: Start difference. First operand 1425 states and 2267 transitions. Second operand 5 states. [2018-09-18 12:06:33,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:06:33,729 INFO L93 Difference]: Finished difference Result 3750 states and 6054 transitions. [2018-09-18 12:06:33,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:06:33,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 273 [2018-09-18 12:06:33,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:06:33,745 INFO L225 Difference]: With dead ends: 3750 [2018-09-18 12:06:33,746 INFO L226 Difference]: Without dead ends: 2331 [2018-09-18 12:06:33,753 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 541 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-09-18 12:06:33,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2331 states. [2018-09-18 12:06:33,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2331 to 2308. [2018-09-18 12:06:33,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2308 states. [2018-09-18 12:06:33,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2308 states to 2308 states and 3578 transitions. [2018-09-18 12:06:33,819 INFO L78 Accepts]: Start accepts. Automaton has 2308 states and 3578 transitions. Word has length 273 [2018-09-18 12:06:33,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:06:33,820 INFO L480 AbstractCegarLoop]: Abstraction has 2308 states and 3578 transitions. [2018-09-18 12:06:33,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:06:33,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2308 states and 3578 transitions. [2018-09-18 12:06:33,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2018-09-18 12:06:33,829 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:06:33,829 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:06:33,829 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:06:33,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1674960492, now seen corresponding path program 1 times [2018-09-18 12:06:33,830 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:06:33,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:33,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:33,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:33,831 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:06:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:34,296 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 186 proven. 142 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-09-18 12:06:34,296 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:06:34,296 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 [2018-09-18 12:06:34,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:34,304 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:06:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:34,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:06:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2018-09-18 12:06:34,695 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:06:35,029 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 186 proven. 142 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-09-18 12:06:35,061 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:06:35,062 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-09-18 12:06:35,062 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:06:35,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:06:35,063 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:06:35,063 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:06:35,064 INFO L87 Difference]: Start difference. First operand 2308 states and 3578 transitions. Second operand 5 states. [2018-09-18 12:06:43,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:06:43,589 INFO L93 Difference]: Finished difference Result 8877 states and 14040 transitions. [2018-09-18 12:06:43,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:06:43,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 349 [2018-09-18 12:06:43,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:06:43,632 INFO L225 Difference]: With dead ends: 8877 [2018-09-18 12:06:43,633 INFO L226 Difference]: Without dead ends: 6575 [2018-09-18 12:06:43,652 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 696 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-18 12:06:43,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6575 states. [2018-09-18 12:06:43,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6575 to 6502. [2018-09-18 12:06:43,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6502 states. [2018-09-18 12:06:43,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6502 states to 6502 states and 9679 transitions. [2018-09-18 12:06:43,834 INFO L78 Accepts]: Start accepts. Automaton has 6502 states and 9679 transitions. Word has length 349 [2018-09-18 12:06:43,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:06:43,835 INFO L480 AbstractCegarLoop]: Abstraction has 6502 states and 9679 transitions. [2018-09-18 12:06:43,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:06:43,835 INFO L276 IsEmpty]: Start isEmpty. Operand 6502 states and 9679 transitions. [2018-09-18 12:06:43,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-09-18 12:06:43,852 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:06:43,852 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:06:43,853 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:06:43,853 INFO L82 PathProgramCache]: Analyzing trace with hash -648618532, now seen corresponding path program 1 times [2018-09-18 12:06:43,853 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:06:43,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:43,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:43,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:43,854 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:06:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:44,229 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 186 proven. 150 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-09-18 12:06:44,230 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:06:44,230 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:06:44,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:44,238 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:06:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:44,333 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:06:44,601 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2018-09-18 12:06:44,601 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:06:44,859 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 186 proven. 150 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-09-18 12:06:44,880 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:06:44,881 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 12:06:44,881 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:06:44,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:06:44,882 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:06:44,882 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:06:44,883 INFO L87 Difference]: Start difference. First operand 6502 states and 9679 transitions. Second operand 5 states. [2018-09-18 12:06:50,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:06:50,226 INFO L93 Difference]: Finished difference Result 24874 states and 38373 transitions. [2018-09-18 12:06:50,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:06:50,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 353 [2018-09-18 12:06:50,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:06:50,306 INFO L225 Difference]: With dead ends: 24874 [2018-09-18 12:06:50,306 INFO L226 Difference]: Without dead ends: 18378 [2018-09-18 12:06:50,359 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 701 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-09-18 12:06:50,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18378 states. [2018-09-18 12:06:50,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18378 to 18241. [2018-09-18 12:06:50,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18241 states. [2018-09-18 12:06:50,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18241 states to 18241 states and 24531 transitions. [2018-09-18 12:06:50,842 INFO L78 Accepts]: Start accepts. Automaton has 18241 states and 24531 transitions. Word has length 353 [2018-09-18 12:06:50,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:06:50,843 INFO L480 AbstractCegarLoop]: Abstraction has 18241 states and 24531 transitions. [2018-09-18 12:06:50,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:06:50,843 INFO L276 IsEmpty]: Start isEmpty. Operand 18241 states and 24531 transitions. [2018-09-18 12:06:50,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-09-18 12:06:50,878 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:06:50,878 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, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:06:50,879 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:06:50,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1780760979, now seen corresponding path program 1 times [2018-09-18 12:06:50,879 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:06:50,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:50,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:50,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:50,880 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:06:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:52,135 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:06:52,135 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:06:52,136 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-18 12:06:52,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:52,146 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:06:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:52,256 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:06:52,598 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:06:52,598 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:06:53,079 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:06:53,099 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:06:53,100 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 [2018-09-18 12:06:53,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:53,117 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:06:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:53,322 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:06:53,538 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-09-18 12:06:53,538 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:06:53,993 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-09-18 12:06:53,995 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-09-18 12:06:53,995 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [13, 5, 5] total 24 [2018-09-18 12:06:53,995 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:06:53,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:06:53,996 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:06:53,996 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2018-09-18 12:06:53,997 INFO L87 Difference]: Start difference. First operand 18241 states and 24531 transitions. Second operand 5 states. [2018-09-18 12:06:58,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:06:58,336 INFO L93 Difference]: Finished difference Result 40544 states and 56416 transitions. [2018-09-18 12:06:58,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 12:06:58,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 377 [2018-09-18 12:06:58,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:06:58,438 INFO L225 Difference]: With dead ends: 40544 [2018-09-18 12:06:58,438 INFO L226 Difference]: Without dead ends: 22309 [2018-09-18 12:06:58,494 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1520 GetRequests, 1496 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2018-09-18 12:06:58,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22309 states. [2018-09-18 12:06:59,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22309 to 21049. [2018-09-18 12:06:59,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21049 states. [2018-09-18 12:06:59,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21049 states to 21049 states and 26904 transitions. [2018-09-18 12:06:59,238 INFO L78 Accepts]: Start accepts. Automaton has 21049 states and 26904 transitions. Word has length 377 [2018-09-18 12:06:59,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:06:59,239 INFO L480 AbstractCegarLoop]: Abstraction has 21049 states and 26904 transitions. [2018-09-18 12:06:59,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:06:59,239 INFO L276 IsEmpty]: Start isEmpty. Operand 21049 states and 26904 transitions. [2018-09-18 12:06:59,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2018-09-18 12:06:59,289 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:06:59,290 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:06:59,290 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:06:59,291 INFO L82 PathProgramCache]: Analyzing trace with hash -85511950, now seen corresponding path program 1 times [2018-09-18 12:06:59,291 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:06:59,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:59,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:59,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:59,292 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:06:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:59,629 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:07:00,209 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 186 proven. 242 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-09-18 12:07:00,210 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:07:00,210 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:07:00,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:00,227 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:07:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:00,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:07:01,020 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2018-09-18 12:07:01,020 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:07:01,769 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 186 proven. 242 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-09-18 12:07:01,791 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:07:01,792 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 12:07:01,792 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:07:01,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:07:01,793 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:07:01,793 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:07:01,793 INFO L87 Difference]: Start difference. First operand 21049 states and 26904 transitions. Second operand 5 states. [2018-09-18 12:07:04,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:07:04,790 INFO L93 Difference]: Finished difference Result 43541 states and 56517 transitions. [2018-09-18 12:07:04,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 12:07:04,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 537 [2018-09-18 12:07:04,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:07:04,900 INFO L225 Difference]: With dead ends: 43541 [2018-09-18 12:07:04,901 INFO L226 Difference]: Without dead ends: 22498 [2018-09-18 12:07:04,979 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1081 GetRequests, 1068 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-09-18 12:07:05,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22498 states. [2018-09-18 12:07:05,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22498 to 22339. [2018-09-18 12:07:05,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22339 states. [2018-09-18 12:07:05,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22339 states to 22339 states and 26826 transitions. [2018-09-18 12:07:05,416 INFO L78 Accepts]: Start accepts. Automaton has 22339 states and 26826 transitions. Word has length 537 [2018-09-18 12:07:05,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:07:05,416 INFO L480 AbstractCegarLoop]: Abstraction has 22339 states and 26826 transitions. [2018-09-18 12:07:05,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:07:05,417 INFO L276 IsEmpty]: Start isEmpty. Operand 22339 states and 26826 transitions. [2018-09-18 12:07:05,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2018-09-18 12:07:05,480 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:07:05,480 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:07:05,481 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:07:05,481 INFO L82 PathProgramCache]: Analyzing trace with hash -321932554, now seen corresponding path program 1 times [2018-09-18 12:07:05,481 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:07:05,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:05,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:05,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:05,483 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:07:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:06,454 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 305 proven. 115 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-09-18 12:07:06,454 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:07:06,454 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 [2018-09-18 12:07:06,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:06,468 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:07:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:06,631 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:07:07,295 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 569 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-09-18 12:07:07,296 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:07:07,797 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 305 proven. 115 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-09-18 12:07:07,828 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:07:07,829 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 [2018-09-18 12:07:07,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:07,845 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:07:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:08,212 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:07:08,439 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 569 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-09-18 12:07:08,439 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:07:08,984 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 305 proven. 115 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-09-18 12:07:08,986 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:07:08,988 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 12:07:08,988 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:07:08,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:07:08,989 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:07:08,990 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 12:07:08,990 INFO L87 Difference]: Start difference. First operand 22339 states and 26826 transitions. Second operand 9 states. [2018-09-18 12:07:18,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:07:18,431 INFO L93 Difference]: Finished difference Result 63463 states and 85728 transitions. [2018-09-18 12:07:18,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-18 12:07:18,432 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 651 [2018-09-18 12:07:18,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:07:18,770 INFO L225 Difference]: With dead ends: 63463 [2018-09-18 12:07:18,770 INFO L226 Difference]: Without dead ends: 41130 [2018-09-18 12:07:19,072 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2624 GetRequests, 2600 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2018-09-18 12:07:19,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41130 states. [2018-09-18 12:07:20,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41130 to 40981. [2018-09-18 12:07:20,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40981 states. [2018-09-18 12:07:20,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40981 states to 40981 states and 51834 transitions. [2018-09-18 12:07:20,660 INFO L78 Accepts]: Start accepts. Automaton has 40981 states and 51834 transitions. Word has length 651 [2018-09-18 12:07:20,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:07:20,661 INFO L480 AbstractCegarLoop]: Abstraction has 40981 states and 51834 transitions. [2018-09-18 12:07:20,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:07:20,662 INFO L276 IsEmpty]: Start isEmpty. Operand 40981 states and 51834 transitions. [2018-09-18 12:07:20,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2018-09-18 12:07:20,692 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:07:20,694 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:07:20,694 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:07:20,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1502110058, now seen corresponding path program 1 times [2018-09-18 12:07:20,695 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:07:20,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:20,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:20,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:20,695 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:07:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:21,398 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 602 trivial. 0 not checked. [2018-09-18 12:07:21,398 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:07:21,399 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 12:07:21,399 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:07:21,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:07:21,405 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:07:21,405 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:07:21,405 INFO L87 Difference]: Start difference. First operand 40981 states and 51834 transitions. Second operand 4 states. [2018-09-18 12:07:26,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:07:26,644 INFO L93 Difference]: Finished difference Result 78239 states and 100326 transitions. [2018-09-18 12:07:26,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 12:07:26,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 731 [2018-09-18 12:07:26,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:07:26,848 INFO L225 Difference]: With dead ends: 78239 [2018-09-18 12:07:26,848 INFO L226 Difference]: Without dead ends: 37264 [2018-09-18 12:07:27,148 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 [2018-09-18 12:07:27,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37264 states. [2018-09-18 12:07:28,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37264 to 37231. [2018-09-18 12:07:28,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37231 states. [2018-09-18 12:07:28,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37231 states to 37231 states and 44523 transitions. [2018-09-18 12:07:28,486 INFO L78 Accepts]: Start accepts. Automaton has 37231 states and 44523 transitions. Word has length 731 [2018-09-18 12:07:28,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:07:28,488 INFO L480 AbstractCegarLoop]: Abstraction has 37231 states and 44523 transitions. [2018-09-18 12:07:28,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 12:07:28,488 INFO L276 IsEmpty]: Start isEmpty. Operand 37231 states and 44523 transitions. [2018-09-18 12:07:28,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1069 [2018-09-18 12:07:28,611 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:07:28,612 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:07:28,612 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:07:28,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1321317671, now seen corresponding path program 1 times [2018-09-18 12:07:28,613 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:07:28,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:28,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:28,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:28,614 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:07:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:29,632 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-18 12:07:29,889 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-09-18 12:07:32,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 671 proven. 215 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2018-09-18 12:07:32,320 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:07:32,320 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 [2018-09-18 12:07:32,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:32,327 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:07:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:32,592 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:07:33,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-18 12:07:33,105 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:07:33,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-18 12:07:34,015 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 12:07:34,015 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [12] total 13 [2018-09-18 12:07:34,015 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:07:34,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:07:34,016 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:07:34,016 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:07:34,017 INFO L87 Difference]: Start difference. First operand 37231 states and 44523 transitions. Second operand 3 states. [2018-09-18 12:07:36,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:07:36,941 INFO L93 Difference]: Finished difference Result 74451 states and 88966 transitions. [2018-09-18 12:07:36,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:07:36,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1068 [2018-09-18 12:07:36,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:07:37,089 INFO L225 Difference]: With dead ends: 74451 [2018-09-18 12:07:37,089 INFO L226 Difference]: Without dead ends: 37226 [2018-09-18 12:07:37,279 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2147 GetRequests, 2134 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:07:37,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37226 states. [2018-09-18 12:07:37,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37226 to 37226. [2018-09-18 12:07:37,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37226 states. [2018-09-18 12:07:37,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37226 states to 37226 states and 42746 transitions. [2018-09-18 12:07:37,870 INFO L78 Accepts]: Start accepts. Automaton has 37226 states and 42746 transitions. Word has length 1068 [2018-09-18 12:07:37,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:07:37,872 INFO L480 AbstractCegarLoop]: Abstraction has 37226 states and 42746 transitions. [2018-09-18 12:07:37,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:07:37,872 INFO L276 IsEmpty]: Start isEmpty. Operand 37226 states and 42746 transitions. [2018-09-18 12:07:37,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1078 [2018-09-18 12:07:37,923 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:07:37,924 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, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:07:37,924 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:07:37,925 INFO L82 PathProgramCache]: Analyzing trace with hash -496803498, now seen corresponding path program 1 times [2018-09-18 12:07:37,925 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:07:37,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:37,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:37,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:37,926 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:07:38,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:38,914 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-18 12:07:39,284 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-09-18 12:07:40,001 WARN L178 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-18 12:07:41,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 743 proven. 305 refuted. 0 times theorem prover too weak. 904 trivial. 0 not checked. [2018-09-18 12:07:41,780 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:07:41,780 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:07:41,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:41,788 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:07:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:42,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:07:43,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 689 proven. 2 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-18 12:07:43,265 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:07:43,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 689 proven. 2 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-18 12:07:43,958 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:07:43,958 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 12 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 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:07:43,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:43,973 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:07:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:44,545 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:07:45,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 689 proven. 2 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-18 12:07:45,303 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:07:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 689 proven. 2 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-18 12:07:45,950 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:07:45,951 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 5, 5] total 21 [2018-09-18 12:07:45,951 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:07:45,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-18 12:07:45,953 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-18 12:07:45,954 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2018-09-18 12:07:45,954 INFO L87 Difference]: Start difference. First operand 37226 states and 42746 transitions. Second operand 15 states. [2018-09-18 12:07:49,665 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 24 [2018-09-18 12:07:52,967 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 28 [2018-09-18 12:07:57,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:07:57,863 INFO L93 Difference]: Finished difference Result 77583 states and 89029 transitions. [2018-09-18 12:07:57,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-18 12:07:57,863 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 1077 [2018-09-18 12:07:57,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:07:57,984 INFO L225 Difference]: With dead ends: 77583 [2018-09-18 12:07:57,984 INFO L226 Difference]: Without dead ends: 40363 [2018-09-18 12:07:58,110 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4388 GetRequests, 4329 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=798, Invalid=2624, Unknown=0, NotChecked=0, Total=3422 [2018-09-18 12:07:58,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40363 states. [2018-09-18 12:07:58,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40363 to 39600. [2018-09-18 12:07:58,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39600 states. [2018-09-18 12:07:58,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39600 states to 39600 states and 44424 transitions. [2018-09-18 12:07:58,778 INFO L78 Accepts]: Start accepts. Automaton has 39600 states and 44424 transitions. Word has length 1077 [2018-09-18 12:07:58,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:07:58,779 INFO L480 AbstractCegarLoop]: Abstraction has 39600 states and 44424 transitions. [2018-09-18 12:07:58,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-18 12:07:58,780 INFO L276 IsEmpty]: Start isEmpty. Operand 39600 states and 44424 transitions. [2018-09-18 12:07:58,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1407 [2018-09-18 12:07:58,859 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:07:58,860 INFO L376 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:07:58,860 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:07:58,861 INFO L82 PathProgramCache]: Analyzing trace with hash 2020595644, now seen corresponding path program 1 times [2018-09-18 12:07:58,861 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:07:58,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:58,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:58,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:58,863 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:07:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:08:00,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4026 backedges. 763 proven. 658 refuted. 0 times theorem prover too weak. 2605 trivial. 0 not checked. [2018-09-18 12:08:00,464 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:08:00,464 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 [2018-09-18 12:08:00,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:08:00,472 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:08:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:08:00,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:08:01,751 INFO L134 CoverageAnalysis]: Checked inductivity of 4026 backedges. 2292 proven. 2 refuted. 0 times theorem prover too weak. 1732 trivial. 0 not checked. [2018-09-18 12:08:01,751 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:08:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4026 backedges. 763 proven. 658 refuted. 0 times theorem prover too weak. 2605 trivial. 0 not checked. [2018-09-18 12:08:02,912 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:08:02,912 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 14 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 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:08:02,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:08:02,928 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:08:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:08:03,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:08:04,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4026 backedges. 2292 proven. 2 refuted. 0 times theorem prover too weak. 1732 trivial. 0 not checked. [2018-09-18 12:08:04,555 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:08:05,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4026 backedges. 763 proven. 658 refuted. 0 times theorem prover too weak. 2605 trivial. 0 not checked. [2018-09-18 12:08:05,720 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:08:05,721 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 12:08:05,721 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:08:05,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:08:05,723 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:08:05,723 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:08:05,724 INFO L87 Difference]: Start difference. First operand 39600 states and 44424 transitions. Second operand 9 states. [2018-09-18 12:08:12,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:08:12,592 INFO L93 Difference]: Finished difference Result 80062 states and 93778 transitions. [2018-09-18 12:08:12,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-18 12:08:12,592 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1406 [2018-09-18 12:08:12,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:08:12,739 INFO L225 Difference]: With dead ends: 80062 [2018-09-18 12:08:12,739 INFO L226 Difference]: Without dead ends: 40854 [2018-09-18 12:08:12,831 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5646 GetRequests, 5621 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-09-18 12:08:12,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40854 states. [2018-09-18 12:08:13,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40854 to 39929. [2018-09-18 12:08:13,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39929 states. [2018-09-18 12:08:13,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39929 states to 39929 states and 43836 transitions. [2018-09-18 12:08:13,428 INFO L78 Accepts]: Start accepts. Automaton has 39929 states and 43836 transitions. Word has length 1406 [2018-09-18 12:08:13,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:08:13,429 INFO L480 AbstractCegarLoop]: Abstraction has 39929 states and 43836 transitions. [2018-09-18 12:08:13,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:08:13,429 INFO L276 IsEmpty]: Start isEmpty. Operand 39929 states and 43836 transitions. [2018-09-18 12:08:13,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1432 [2018-09-18 12:08:13,491 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:08:13,491 INFO L376 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:08:13,492 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:08:13,492 INFO L82 PathProgramCache]: Analyzing trace with hash 660251161, now seen corresponding path program 1 times [2018-09-18 12:08:13,492 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:08:13,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:08:13,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:08:13,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:08:13,493 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:08:13,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:08:18,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4198 backedges. 1404 proven. 970 refuted. 0 times theorem prover too weak. 1824 trivial. 0 not checked. [2018-09-18 12:08:18,205 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:08:18,205 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:08:18,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:08:18,213 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:08:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:08:18,559 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:08:19,651 INFO L134 CoverageAnalysis]: Checked inductivity of 4198 backedges. 1164 proven. 0 refuted. 0 times theorem prover too weak. 3034 trivial. 0 not checked. [2018-09-18 12:08:19,651 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:08:22,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4198 backedges. 496 proven. 1074 refuted. 0 times theorem prover too weak. 2628 trivial. 0 not checked. [2018-09-18 12:08:22,109 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:08:22,110 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [16, 5] total 21 [2018-09-18 12:08:22,110 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:08:22,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:08:22,111 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:08:22,111 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2018-09-18 12:08:22,112 INFO L87 Difference]: Start difference. First operand 39929 states and 43836 transitions. Second operand 5 states. [2018-09-18 12:08:30,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:08:30,255 INFO L93 Difference]: Finished difference Result 86925 states and 95630 transitions. [2018-09-18 12:08:30,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:08:30,256 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1431 [2018-09-18 12:08:30,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:08:30,345 INFO L225 Difference]: With dead ends: 86925 [2018-09-18 12:08:30,346 INFO L226 Difference]: Without dead ends: 47007 [2018-09-18 12:08:30,405 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2880 GetRequests, 2858 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2018-09-18 12:08:30,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47007 states. [2018-09-18 12:08:31,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47007 to 44133. [2018-09-18 12:08:31,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44133 states. [2018-09-18 12:08:31,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44133 states to 44133 states and 48120 transitions. [2018-09-18 12:08:31,242 INFO L78 Accepts]: Start accepts. Automaton has 44133 states and 48120 transitions. Word has length 1431 [2018-09-18 12:08:31,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:08:31,243 INFO L480 AbstractCegarLoop]: Abstraction has 44133 states and 48120 transitions. [2018-09-18 12:08:31,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:08:31,243 INFO L276 IsEmpty]: Start isEmpty. Operand 44133 states and 48120 transitions. [2018-09-18 12:08:31,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1524 [2018-09-18 12:08:31,311 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:08:31,312 INFO L376 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:08:31,312 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:08:31,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1615944214, now seen corresponding path program 1 times [2018-09-18 12:08:31,313 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:08:31,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:08:31,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:08:31,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:08:31,314 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:08:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:08:32,194 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-09-18 12:08:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4996 backedges. 683 proven. 1090 refuted. 0 times theorem prover too weak. 3223 trivial. 0 not checked. [2018-09-18 12:08:35,091 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:08:35,091 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:08:35,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:08:35,101 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:08:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:08:35,476 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:08:37,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4996 backedges. 3845 proven. 6 refuted. 0 times theorem prover too weak. 1145 trivial. 0 not checked. [2018-09-18 12:08:37,233 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:08:41,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4996 backedges. 1661 proven. 977 refuted. 0 times theorem prover too weak. 2358 trivial. 0 not checked. [2018-09-18 12:08:41,125 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:08:41,125 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:08:41,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:08:41,152 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:08:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:08:42,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:09:04,332 WARN L178 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 47 DAG size of output: 20 [2018-09-18 12:09:05,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4996 backedges. 582 proven. 0 refuted. 0 times theorem prover too weak. 4414 trivial. 0 not checked. [2018-09-18 12:09:05,554 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:09:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4996 backedges. 582 proven. 0 refuted. 0 times theorem prover too weak. 4414 trivial. 0 not checked. [2018-09-18 12:09:06,622 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-09-18 12:09:06,623 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [13, 8, 8] total 26 [2018-09-18 12:09:06,623 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:09:06,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:09:06,624 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:09:06,625 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=546, Unknown=9, NotChecked=0, Total=650 [2018-09-18 12:09:06,625 INFO L87 Difference]: Start difference. First operand 44133 states and 48120 transitions. Second operand 3 states. Received shutdown request... [2018-09-18 12:10:04,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:10:04,613 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 12:10:04,618 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 12:10:04,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:10:04 BoogieIcfgContainer [2018-09-18 12:10:04,619 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 12:10:04,620 INFO L168 Benchmark]: Toolchain (without parser) took 242263.11 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 194.7 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-09-18 12:10:04,621 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 12:10:04,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1087.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-09-18 12:10:04,622 INFO L168 Benchmark]: Boogie Procedure Inliner took 191.64 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-18 12:10:04,623 INFO L168 Benchmark]: Boogie Preprocessor took 445.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 814.7 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -973.7 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2018-09-18 12:10:04,624 INFO L168 Benchmark]: RCFGBuilder took 5892.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 250.2 MB). Peak memory consumption was 250.2 MB. Max. memory is 7.1 GB. [2018-09-18 12:10:04,624 INFO L168 Benchmark]: TraceAbstraction took 234636.35 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 2.0 GB in the beginning and 1.2 GB in the end (delta: 791.3 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-09-18 12:10:04,632 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1087.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 191.64 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 445.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 814.7 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -973.7 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5892.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 250.2 MB). Peak memory consumption was 250.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234636.35 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 2.0 GB in the beginning and 1.2 GB in the end (delta: 791.3 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 193]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 193). Cancelled while BasicCegarLoop was constructing difference of abstraction (44133states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (1668 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 234.5s OverallTime, 14 OverallIterations, 10 TraceHistogramMax, 147.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2333 SDtfs, 21069 SDslu, 1985 SDs, 0 SdLazy, 40955 SolverSat, 9910 SolverUnsat, 31 SolverUnknown, 0 SolverNotchecked, 126.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28386 GetRequests, 28128 SyntacticMatches, 32 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1721 ImplicationChecksByTransitivity, 36.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44133occurred in iteration=13, 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: 7.7s AutomataMinimizationTime, 13 MinimizatonAttempts, 6417 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.7s SsaConstructionTime, 5.0s SatisfiabilityAnalysisTime, 59.9s InterpolantComputationTime, 24086 NumberOfCodeBlocks, 24086 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 38119 ConstructedInterpolants, 65 QuantifiedInterpolants, 120479290 SizeOfPredicates, 18 NumberOfNonLiveVariables, 18850 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 46 InterpolantComputations, 14 PerfectInterpolantSequences, 73825/82047 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/Problem16_label42_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_12-10-04-645.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem16_label42_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_12-10-04-645.csv Completed graceful shutdown