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/Problem19_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 18:19:42,396 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 18:19:42,398 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 18:19:42,410 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 18:19:42,412 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 18:19:42,414 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 18:19:42,415 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 18:19:42,417 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 18:19:42,420 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 18:19:42,421 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 18:19:42,421 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 18:19:42,422 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 18:19:42,423 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 18:19:42,424 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 18:19:42,425 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 18:19:42,426 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 18:19:42,426 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 18:19:42,428 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 18:19:42,430 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 18:19:42,432 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 18:19:42,433 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 18:19:42,434 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 18:19:42,437 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 18:19:42,437 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 18:19:42,437 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 18:19:42,438 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 18:19:42,440 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 18:19:42,440 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 18:19:42,441 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 18:19:42,448 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 18:19:42,448 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 18:19:42,449 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 18:19:42,449 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 18:19:42,449 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 18:19:42,450 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 18:19:42,451 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 18:19:42,451 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 18:19:42,467 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 18:19:42,468 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 18:19:42,468 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 18:19:42,469 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 18:19:42,469 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 18:19:42,469 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 18:19:42,469 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 18:19:42,469 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 18:19:42,470 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 18:19:42,470 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 18:19:42,470 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 18:19:42,471 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 18:19:42,471 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 18:19:42,471 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 18:19:42,471 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 18:19:42,471 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 18:19:42,472 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 18:19:42,472 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 18:19:42,472 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 18:19:42,472 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 18:19:42,472 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 18:19:42,472 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 18:19:42,473 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 18:19:42,473 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:19:42,473 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 18:19:42,473 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 18:19:42,473 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 18:19:42,474 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 18:19:42,474 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 18:19:42,474 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 18:19:42,474 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 18:19:42,474 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 18:19:42,475 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 18:19:42,524 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 18:19:42,537 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 18:19:42,543 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 18:19:42,545 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 18:19:42,545 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 18:19:42,546 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label12_true-unreach-call.c [2018-09-14 18:19:42,913 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49b070610/c6c08d46508b4a0288df93beed3fe29d/FLAG4300d4361 [2018-09-14 18:19:43,487 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 18:19:43,488 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label12_true-unreach-call.c [2018-09-14 18:19:43,532 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49b070610/c6c08d46508b4a0288df93beed3fe29d/FLAG4300d4361 [2018-09-14 18:19:43,548 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49b070610/c6c08d46508b4a0288df93beed3fe29d [2018-09-14 18:19:43,559 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 18:19:43,562 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 18:19:43,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 18:19:43,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 18:19:43,571 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 18:19:43,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:19:43" (1/1) ... [2018-09-14 18:19:43,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@144296d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:19:43, skipping insertion in model container [2018-09-14 18:19:43,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:19:43" (1/1) ... [2018-09-14 18:19:43,587 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 18:19:45,559 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:19:45,581 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 18:19:46,884 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:19:47,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:19:47 WrapperNode [2018-09-14 18:19:47,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 18:19:47,445 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 18:19:47,445 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 18:19:47,446 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 18:19:47,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:19:47" (1/1) ... [2018-09-14 18:19:47,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:19:47" (1/1) ... [2018-09-14 18:19:47,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 18:19:47,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 18:19:47,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 18:19:47,732 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 18:19:48,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:19:47" (1/1) ... [2018-09-14 18:19:48,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:19:47" (1/1) ... [2018-09-14 18:19:48,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:19:47" (1/1) ... [2018-09-14 18:19:48,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:19:47" (1/1) ... [2018-09-14 18:19:49,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:19:47" (1/1) ... [2018-09-14 18:19:49,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:19:47" (1/1) ... [2018-09-14 18:19:49,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:19:47" (1/1) ... [2018-09-14 18:19:49,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 18:19:49,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 18:19:49,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 18:19:49,357 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 18:19:49,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:19:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:19:49,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 18:19:49,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 18:19:49,421 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-09-14 18:19:49,421 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-09-14 18:19:49,421 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-09-14 18:19:49,421 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-09-14 18:19:49,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 18:19:49,422 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 18:19:49,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 18:19:49,422 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 18:19:49,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 18:19:49,422 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 18:19:49,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 18:19:49,423 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 18:19:49,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 18:19:49,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 18:19:49,423 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 18:19:49,423 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 18:20:06,561 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 18:20:06,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:20:06 BoogieIcfgContainer [2018-09-14 18:20:06,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 18:20:06,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 18:20:06,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 18:20:06,567 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 18:20:06,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 06:19:43" (1/3) ... [2018-09-14 18:20:06,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58065de5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:20:06, skipping insertion in model container [2018-09-14 18:20:06,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:19:47" (2/3) ... [2018-09-14 18:20:06,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58065de5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:20:06, skipping insertion in model container [2018-09-14 18:20:06,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:20:06" (3/3) ... [2018-09-14 18:20:06,571 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label12_true-unreach-call.c [2018-09-14 18:20:06,580 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 18:20:06,589 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 18:20:06,658 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 18:20:06,659 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 18:20:06,659 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 18:20:06,659 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 18:20:06,659 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 18:20:06,660 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 18:20:06,660 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 18:20:06,660 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 18:20:06,660 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 18:20:06,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-09-14 18:20:06,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-14 18:20:06,718 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:20:06,719 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] [2018-09-14 18:20:06,721 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:20:06,726 INFO L82 PathProgramCache]: Analyzing trace with hash -21535606, now seen corresponding path program 1 times [2018-09-14 18:20:06,729 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:20:06,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:20:06,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:20:06,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:20:06,784 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:20:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:20:07,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:20:07,233 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:20:07,233 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 18:20:07,233 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:20:07,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:20:07,255 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:20:07,256 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:20:07,258 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-09-14 18:20:26,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:20:26,430 INFO L93 Difference]: Finished difference Result 5034 states and 9499 transitions. [2018-09-14 18:20:26,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:20:26,441 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2018-09-14 18:20:26,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:20:26,494 INFO L225 Difference]: With dead ends: 5034 [2018-09-14 18:20:26,494 INFO L226 Difference]: Without dead ends: 3254 [2018-09-14 18:20:26,512 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:20:26,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2018-09-14 18:20:26,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 3207. [2018-09-14 18:20:26,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3207 states. [2018-09-14 18:20:26,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 5994 transitions. [2018-09-14 18:20:26,754 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 5994 transitions. Word has length 51 [2018-09-14 18:20:26,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:20:26,754 INFO L480 AbstractCegarLoop]: Abstraction has 3207 states and 5994 transitions. [2018-09-14 18:20:26,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:20:26,755 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 5994 transitions. [2018-09-14 18:20:26,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-09-14 18:20:26,770 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:20:26,770 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:20:26,771 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:20:26,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1031778886, now seen corresponding path program 1 times [2018-09-14 18:20:26,772 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:20:26,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:20:26,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:20:26,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:20:26,773 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:20:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:20:27,398 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:20:27,399 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:20:27,399 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:20:27,399 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:20:27,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:20:27,402 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:20:27,402 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:20:27,402 INFO L87 Difference]: Start difference. First operand 3207 states and 5994 transitions. Second operand 6 states. [2018-09-14 18:21:02,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:21:02,101 INFO L93 Difference]: Finished difference Result 9590 states and 17980 transitions. [2018-09-14 18:21:02,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-14 18:21:02,102 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-09-14 18:21:02,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:21:02,141 INFO L225 Difference]: With dead ends: 9590 [2018-09-14 18:21:02,142 INFO L226 Difference]: Without dead ends: 6389 [2018-09-14 18:21:02,152 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:21:02,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6389 states. [2018-09-14 18:21:02,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6389 to 6281. [2018-09-14 18:21:02,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6281 states. [2018-09-14 18:21:02,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6281 states to 6281 states and 11310 transitions. [2018-09-14 18:21:02,348 INFO L78 Accepts]: Start accepts. Automaton has 6281 states and 11310 transitions. Word has length 124 [2018-09-14 18:21:02,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:21:02,348 INFO L480 AbstractCegarLoop]: Abstraction has 6281 states and 11310 transitions. [2018-09-14 18:21:02,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:21:02,349 INFO L276 IsEmpty]: Start isEmpty. Operand 6281 states and 11310 transitions. [2018-09-14 18:21:02,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-14 18:21:02,352 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:21:02,352 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:21:02,353 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:21:02,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1387877847, now seen corresponding path program 1 times [2018-09-14 18:21:02,353 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:21:02,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:21:02,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:21:02,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:21:02,355 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:21:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:21:02,556 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:21:02,556 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:21:02,557 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 18:21:02,557 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:21:02,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:21:02,559 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:21:02,559 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 18:21:02,559 INFO L87 Difference]: Start difference. First operand 6281 states and 11310 transitions. Second operand 5 states. [2018-09-14 18:21:33,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:21:33,864 INFO L93 Difference]: Finished difference Result 18963 states and 34370 transitions. [2018-09-14 18:21:33,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:21:33,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2018-09-14 18:21:33,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:21:33,928 INFO L225 Difference]: With dead ends: 18963 [2018-09-14 18:21:33,929 INFO L226 Difference]: Without dead ends: 12688 [2018-09-14 18:21:33,948 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:21:33,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12688 states. [2018-09-14 18:21:34,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12688 to 12416. [2018-09-14 18:21:34,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12416 states. [2018-09-14 18:21:34,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12416 states to 12416 states and 18931 transitions. [2018-09-14 18:21:34,325 INFO L78 Accepts]: Start accepts. Automaton has 12416 states and 18931 transitions. Word has length 138 [2018-09-14 18:21:34,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:21:34,326 INFO L480 AbstractCegarLoop]: Abstraction has 12416 states and 18931 transitions. [2018-09-14 18:21:34,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:21:34,326 INFO L276 IsEmpty]: Start isEmpty. Operand 12416 states and 18931 transitions. [2018-09-14 18:21:34,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-09-14 18:21:34,338 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:21:34,338 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:21:34,339 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:21:34,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1906021503, now seen corresponding path program 1 times [2018-09-14 18:21:34,339 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:21:34,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:21:34,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:21:34,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:21:34,342 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:21:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:21:34,716 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 88 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:21:34,716 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:21:34,716 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:21:34,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:21:34,725 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:21:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:21:34,828 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:21:34,987 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-14 18:21:34,988 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:21:35,281 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 88 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:21:35,313 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:21:35,314 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-09-14 18:21:35,314 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:21:35,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:21:35,316 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:21:35,316 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:21:35,316 INFO L87 Difference]: Start difference. First operand 12416 states and 18931 transitions. Second operand 5 states. [2018-09-14 18:22:03,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:22:03,996 INFO L93 Difference]: Finished difference Result 40252 states and 63093 transitions. [2018-09-14 18:22:04,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:22:04,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2018-09-14 18:22:04,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:22:04,157 INFO L225 Difference]: With dead ends: 40252 [2018-09-14 18:22:04,157 INFO L226 Difference]: Without dead ends: 27842 [2018-09-14 18:22:04,201 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 454 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:22:04,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27842 states. [2018-09-14 18:22:04,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27842 to 26954. [2018-09-14 18:22:04,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26954 states. [2018-09-14 18:22:04,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26954 states to 26954 states and 38021 transitions. [2018-09-14 18:22:04,980 INFO L78 Accepts]: Start accepts. Automaton has 26954 states and 38021 transitions. Word has length 228 [2018-09-14 18:22:04,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:22:04,981 INFO L480 AbstractCegarLoop]: Abstraction has 26954 states and 38021 transitions. [2018-09-14 18:22:04,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:22:04,981 INFO L276 IsEmpty]: Start isEmpty. Operand 26954 states and 38021 transitions. [2018-09-14 18:22:04,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-09-14 18:22:04,991 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:22:04,991 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:22:04,991 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:22:04,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1638818871, now seen corresponding path program 1 times [2018-09-14 18:22:04,992 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:22:04,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:22:04,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:22:04,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:22:04,993 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:22:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:22:05,424 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:22:05,937 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 88 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:22:05,938 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:22:05,938 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:22:05,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:22:05,955 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:22:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:22:06,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:22:06,627 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-14 18:22:06,627 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:22:06,842 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 18:22:07,707 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 88 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:22:07,743 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:22:07,743 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 18:22:07,744 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:22:07,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:22:07,745 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:22:07,745 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-14 18:22:07,746 INFO L87 Difference]: Start difference. First operand 26954 states and 38021 transitions. Second operand 5 states. [2018-09-14 18:22:30,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:22:30,184 INFO L93 Difference]: Finished difference Result 75855 states and 112577 transitions. [2018-09-14 18:22:30,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:22:30,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2018-09-14 18:22:30,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:22:30,383 INFO L225 Difference]: With dead ends: 75855 [2018-09-14 18:22:30,383 INFO L226 Difference]: Without dead ends: 48907 [2018-09-14 18:22:30,481 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 619 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-09-14 18:22:30,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48907 states. [2018-09-14 18:22:31,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48907 to 47932. [2018-09-14 18:22:31,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47932 states. [2018-09-14 18:22:31,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47932 states to 47932 states and 68486 transitions. [2018-09-14 18:22:31,856 INFO L78 Accepts]: Start accepts. Automaton has 47932 states and 68486 transitions. Word has length 312 [2018-09-14 18:22:31,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:22:31,857 INFO L480 AbstractCegarLoop]: Abstraction has 47932 states and 68486 transitions. [2018-09-14 18:22:31,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:22:31,857 INFO L276 IsEmpty]: Start isEmpty. Operand 47932 states and 68486 transitions. [2018-09-14 18:22:31,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2018-09-14 18:22:31,878 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:22:31,878 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:22:31,879 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:22:31,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1079006793, now seen corresponding path program 1 times [2018-09-14 18:22:31,879 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:22:31,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:22:31,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:22:31,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:22:31,880 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:22:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:22:32,549 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 300 proven. 95 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-14 18:22:32,550 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:22:32,550 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:22:32,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:22:32,563 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:22:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:22:32,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:22:32,910 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 442 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-14 18:22:32,910 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:22:33,182 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 300 proven. 95 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-14 18:22:33,204 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:22:33,205 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:22:33,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:22:33,220 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:22:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:22:33,567 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:22:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 442 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-14 18:22:33,791 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:22:34,246 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 300 proven. 95 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-14 18:22:34,250 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:22:34,250 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 18:22:34,250 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:22:34,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:22:34,252 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:22:34,252 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:22:34,252 INFO L87 Difference]: Start difference. First operand 47932 states and 68486 transitions. Second operand 9 states. [2018-09-14 18:23:13,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:23:13,881 INFO L93 Difference]: Finished difference Result 195368 states and 345954 transitions. [2018-09-14 18:23:13,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-14 18:23:13,882 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 536 [2018-09-14 18:23:13,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:23:14,555 INFO L225 Difference]: With dead ends: 195368 [2018-09-14 18:23:14,556 INFO L226 Difference]: Without dead ends: 136150 [2018-09-14 18:23:14,801 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2164 GetRequests, 2142 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2018-09-14 18:23:14,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136150 states. [2018-09-14 18:23:17,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136150 to 134724. [2018-09-14 18:23:17,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134724 states. [2018-09-14 18:23:17,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134724 states to 134724 states and 192803 transitions. [2018-09-14 18:23:17,670 INFO L78 Accepts]: Start accepts. Automaton has 134724 states and 192803 transitions. Word has length 536 [2018-09-14 18:23:17,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:23:17,671 INFO L480 AbstractCegarLoop]: Abstraction has 134724 states and 192803 transitions. [2018-09-14 18:23:17,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:23:17,671 INFO L276 IsEmpty]: Start isEmpty. Operand 134724 states and 192803 transitions. [2018-09-14 18:23:17,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2018-09-14 18:23:17,772 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:23:17,773 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:23:17,773 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:23:17,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1767991365, now seen corresponding path program 1 times [2018-09-14 18:23:17,774 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:23:17,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:23:17,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:23:17,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:23:17,775 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:23:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:23:19,628 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 284 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:23:19,628 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:23:19,628 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:23:19,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:23:19,636 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:23:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:23:19,884 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:23:20,258 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2018-09-14 18:23:20,259 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:23:21,094 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2018-09-14 18:23:21,115 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 18:23:21,115 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-09-14 18:23:21,115 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:23:21,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:23:21,116 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:23:21,116 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-14 18:23:21,117 INFO L87 Difference]: Start difference. First operand 134724 states and 192803 transitions. Second operand 3 states. [2018-09-14 18:23:34,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:23:34,521 INFO L93 Difference]: Finished difference Result 315168 states and 472450 transitions. [2018-09-14 18:23:34,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:23:34,522 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 878 [2018-09-14 18:23:34,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:23:35,262 INFO L225 Difference]: With dead ends: 315168 [2018-09-14 18:23:35,262 INFO L226 Difference]: Without dead ends: 180450 [2018-09-14 18:23:35,617 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1761 GetRequests, 1755 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-14 18:23:35,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180450 states. [2018-09-14 18:23:38,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180450 to 180346. [2018-09-14 18:23:38,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180346 states. [2018-09-14 18:23:39,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180346 states to 180346 states and 252464 transitions. [2018-09-14 18:23:39,154 INFO L78 Accepts]: Start accepts. Automaton has 180346 states and 252464 transitions. Word has length 878 [2018-09-14 18:23:39,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:23:39,155 INFO L480 AbstractCegarLoop]: Abstraction has 180346 states and 252464 transitions. [2018-09-14 18:23:39,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:23:39,156 INFO L276 IsEmpty]: Start isEmpty. Operand 180346 states and 252464 transitions. [2018-09-14 18:23:39,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2018-09-14 18:23:39,216 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:23:39,217 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:23:39,217 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:23:39,218 INFO L82 PathProgramCache]: Analyzing trace with hash 2063878963, now seen corresponding path program 1 times [2018-09-14 18:23:39,218 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:23:39,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:23:39,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:23:39,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:23:39,219 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:23:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:23:39,849 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 Received shutdown request... [2018-09-14 18:23:41,615 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 187 proven. 422 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2018-09-14 18:23:41,616 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:23:41,616 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:23:41,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:23:41,626 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:23:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:23:41,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:23:41,912 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-14 18:23:42,113 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:23:42,114 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 18:23:42,118 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 18:23:42,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 06:23:42 BoogieIcfgContainer [2018-09-14 18:23:42,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 18:23:42,119 INFO L168 Benchmark]: Toolchain (without parser) took 238559.67 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 151.0 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-09-14 18:23:42,121 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 18:23:42,121 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3880.93 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 191.9 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -113.6 MB). Peak memory consumption was 490.6 MB. Max. memory is 7.1 GB. [2018-09-14 18:23:42,122 INFO L168 Benchmark]: Boogie Procedure Inliner took 286.50 ms. Allocated memory is still 1.7 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 62.3 MB). Peak memory consumption was 62.3 MB. Max. memory is 7.1 GB. [2018-09-14 18:23:42,123 INFO L168 Benchmark]: Boogie Preprocessor took 1623.93 ms. Allocated memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: 858.8 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -860.7 MB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. [2018-09-14 18:23:42,125 INFO L168 Benchmark]: RCFGBuilder took 17206.32 ms. Allocated memory was 2.6 GB in the beginning and 2.9 GB in the end (delta: 266.9 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 112.6 MB). Peak memory consumption was 999.6 MB. Max. memory is 7.1 GB. [2018-09-14 18:23:42,126 INFO L168 Benchmark]: TraceAbstraction took 215555.47 ms. Allocated memory was 2.9 GB in the beginning and 3.5 GB in the end (delta: 609.2 MB). Free memory was 2.2 GB in the beginning and 1.3 GB in the end (delta: 950.4 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-09-14 18:23:42,135 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 3880.93 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 191.9 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -113.6 MB). Peak memory consumption was 490.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 286.50 ms. Allocated memory is still 1.7 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 62.3 MB). Peak memory consumption was 62.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1623.93 ms. Allocated memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: 858.8 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -860.7 MB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17206.32 ms. Allocated memory was 2.6 GB in the beginning and 2.9 GB in the end (delta: 266.9 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 112.6 MB). Peak memory consumption was 999.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215555.47 ms. Allocated memory was 2.9 GB in the beginning and 3.5 GB in the end (delta: 609.2 MB). Free memory was 2.2 GB in the beginning and 1.3 GB in the end (delta: 950.4 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 148]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 148). Cancelled while BasicCegarLoop was analyzing trace of length 911 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 215.4s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 192.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6565 SDtfs, 41152 SDslu, 5752 SDs, 0 SdLazy, 69556 SolverSat, 20445 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 163.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5048 GetRequests, 4979 SyntacticMatches, 10 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=180346occurred in iteration=7, 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: 9.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 3820 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 4757 NumberOfCodeBlocks, 4757 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 7230 ConstructedInterpolants, 0 QuantifiedInterpolants, 8426832 SizeOfPredicates, 2 NumberOfNonLiveVariables, 3693 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 17 InterpolantComputations, 7 PerfectInterpolantSequences, 3831/4468 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/Problem19_label12_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_18-23-42-149.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label12_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_18-23-42-149.csv Completed graceful shutdown