java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label40_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 18:13:47,781 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 18:13:47,784 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 18:13:47,801 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 18:13:47,801 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 18:13:47,803 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 18:13:47,804 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 18:13:47,807 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 18:13:47,809 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 18:13:47,809 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 18:13:47,810 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 18:13:47,811 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 18:13:47,812 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 18:13:47,813 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 18:13:47,814 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 18:13:47,815 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 18:13:47,815 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 18:13:47,817 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 18:13:47,819 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 18:13:47,821 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 18:13:47,822 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 18:13:47,823 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 18:13:47,827 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 18:13:47,828 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 18:13:47,828 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 18:13:47,831 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 18:13:47,832 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 18:13:47,833 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 18:13:47,834 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 18:13:47,835 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 18:13:47,835 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 18:13:47,836 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 18:13:47,836 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 18:13:47,836 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 18:13:47,837 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 18:13:47,838 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 18:13:47,838 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 18:13:47,853 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 18:13:47,854 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 18:13:47,855 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 18:13:47,855 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 18:13:47,855 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 18:13:47,855 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 18:13:47,856 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 18:13:47,856 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 18:13:47,856 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 18:13:47,856 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 18:13:47,856 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 18:13:47,857 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 18:13:47,857 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 18:13:47,858 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 18:13:47,858 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 18:13:47,858 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 18:13:47,858 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 18:13:47,858 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 18:13:47,859 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 18:13:47,859 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 18:13:47,859 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 18:13:47,859 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 18:13:47,859 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 18:13:47,860 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:13:47,860 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 18:13:47,860 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 18:13:47,860 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 18:13:47,860 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 18:13:47,861 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 18:13:47,861 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 18:13:47,861 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 18:13:47,861 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 18:13:47,861 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 18:13:47,908 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 18:13:47,923 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 18:13:47,930 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 18:13:47,932 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 18:13:47,932 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 18:13:47,933 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label40_true-unreach-call.c [2018-09-14 18:13:48,300 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a97934af/17c1d1cf2ca740d8abe68bcb692515f1/FLAG1182bc2b6 [2018-09-14 18:13:48,737 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 18:13:48,738 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label40_true-unreach-call.c [2018-09-14 18:13:48,763 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a97934af/17c1d1cf2ca740d8abe68bcb692515f1/FLAG1182bc2b6 [2018-09-14 18:13:48,781 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a97934af/17c1d1cf2ca740d8abe68bcb692515f1 [2018-09-14 18:13:48,794 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 18:13:48,800 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 18:13:48,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 18:13:48,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 18:13:48,811 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 18:13:48,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:13:48" (1/1) ... [2018-09-14 18:13:48,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a21620d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:13:48, skipping insertion in model container [2018-09-14 18:13:48,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:13:48" (1/1) ... [2018-09-14 18:13:48,831 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 18:13:49,997 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:13:50,017 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 18:13:50,674 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:13:50,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:13:50 WrapperNode [2018-09-14 18:13:50,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 18:13:50,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 18:13:50,840 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 18:13:50,840 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 18:13:50,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:13:50" (1/1) ... [2018-09-14 18:13:50,917 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:13:50" (1/1) ... [2018-09-14 18:13:51,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 18:13:51,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 18:13:51,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 18:13:51,010 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 18:13:51,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:13:50" (1/1) ... [2018-09-14 18:13:51,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:13:50" (1/1) ... [2018-09-14 18:13:51,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:13:50" (1/1) ... [2018-09-14 18:13:51,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:13:50" (1/1) ... [2018-09-14 18:13:51,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:13:50" (1/1) ... [2018-09-14 18:13:51,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:13:50" (1/1) ... [2018-09-14 18:13:51,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:13:50" (1/1) ... [2018-09-14 18:13:51,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 18:13:51,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 18:13:51,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 18:13:51,758 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 18:13:51,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:13:50" (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 18:13:51,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 18:13:51,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 18:13:51,831 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 18:13:51,831 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 18:13:51,831 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 18:13:51,831 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 18:13:51,832 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 18:13:51,832 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 18:13:51,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 18:13:51,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 18:13:51,832 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 18:13:51,833 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 18:13:59,572 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 18:13:59,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:13:59 BoogieIcfgContainer [2018-09-14 18:13:59,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 18:13:59,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 18:13:59,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 18:13:59,578 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 18:13:59,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 06:13:48" (1/3) ... [2018-09-14 18:13:59,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d67a791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:13:59, skipping insertion in model container [2018-09-14 18:13:59,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:13:50" (2/3) ... [2018-09-14 18:13:59,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d67a791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:13:59, skipping insertion in model container [2018-09-14 18:13:59,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:13:59" (3/3) ... [2018-09-14 18:13:59,583 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label40_true-unreach-call.c [2018-09-14 18:13:59,594 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 18:13:59,605 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 18:13:59,667 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 18:13:59,668 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 18:13:59,668 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 18:13:59,669 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 18:13:59,669 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 18:13:59,669 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 18:13:59,669 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 18:13:59,669 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 18:13:59,669 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 18:13:59,708 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-09-14 18:13:59,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-14 18:13:59,718 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:13:59,719 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 18:13:59,721 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:13:59,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1179800183, now seen corresponding path program 1 times [2018-09-14 18:13:59,729 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:13:59,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:59,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:59,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:59,783 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:13:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:00,210 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:14:00,340 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 18:14:00,343 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:14:00,343 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 18:14:00,344 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:14:00,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:14:00,368 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:14:00,369 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:14:00,372 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-09-14 18:14:06,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:14:06,965 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-09-14 18:14:06,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:14:06,968 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2018-09-14 18:14:06,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:14:06,996 INFO L225 Difference]: With dead ends: 2251 [2018-09-14 18:14:06,997 INFO L226 Difference]: Without dead ends: 1474 [2018-09-14 18:14:07,007 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:14:07,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-09-14 18:14:07,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-09-14 18:14:07,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-09-14 18:14:07,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-09-14 18:14:07,169 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 51 [2018-09-14 18:14:07,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:14:07,170 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-09-14 18:14:07,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:14:07,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-09-14 18:14:07,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-14 18:14:07,183 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:14:07,184 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, 1, 1] [2018-09-14 18:14:07,184 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:14:07,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1038500593, now seen corresponding path program 1 times [2018-09-14 18:14:07,188 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:14:07,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:07,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:07,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:07,191 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:14:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:07,520 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 18:14:07,521 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:14:07,521 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:14:07,521 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:14:07,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:14:07,523 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:14:07,523 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:14:07,524 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 6 states. [2018-09-14 18:14:16,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:14:16,594 INFO L93 Difference]: Finished difference Result 4419 states and 8244 transitions. [2018-09-14 18:14:16,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:14:16,595 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-09-14 18:14:16,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:14:16,619 INFO L225 Difference]: With dead ends: 4419 [2018-09-14 18:14:16,619 INFO L226 Difference]: Without dead ends: 2951 [2018-09-14 18:14:16,625 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:14:16,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-09-14 18:14:16,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2928. [2018-09-14 18:14:16,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-09-14 18:14:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5087 transitions. [2018-09-14 18:14:16,748 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5087 transitions. Word has length 140 [2018-09-14 18:14:16,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:14:16,749 INFO L480 AbstractCegarLoop]: Abstraction has 2928 states and 5087 transitions. [2018-09-14 18:14:16,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:14:16,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5087 transitions. [2018-09-14 18:14:16,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-09-14 18:14:16,764 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:14:16,765 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:14:16,765 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:14:16,766 INFO L82 PathProgramCache]: Analyzing trace with hash -429800468, now seen corresponding path program 1 times [2018-09-14 18:14:16,766 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:14:16,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:16,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:16,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:16,768 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:14:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:17,138 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 18:14:17,138 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:14:17,139 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:14:17,139 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:14:17,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:14:17,140 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:14:17,140 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:14:17,141 INFO L87 Difference]: Start difference. First operand 2928 states and 5087 transitions. Second operand 6 states. [2018-09-14 18:14:26,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:14:26,508 INFO L93 Difference]: Finished difference Result 10194 states and 17948 transitions. [2018-09-14 18:14:26,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:14:26,509 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2018-09-14 18:14:26,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:14:26,557 INFO L225 Difference]: With dead ends: 10194 [2018-09-14 18:14:26,558 INFO L226 Difference]: Without dead ends: 7272 [2018-09-14 18:14:26,577 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:14:26,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7272 states. [2018-09-14 18:14:26,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7272 to 7208. [2018-09-14 18:14:26,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7208 states. [2018-09-14 18:14:26,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7208 states to 7208 states and 11881 transitions. [2018-09-14 18:14:26,827 INFO L78 Accepts]: Start accepts. Automaton has 7208 states and 11881 transitions. Word has length 187 [2018-09-14 18:14:26,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:14:26,828 INFO L480 AbstractCegarLoop]: Abstraction has 7208 states and 11881 transitions. [2018-09-14 18:14:26,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:14:26,828 INFO L276 IsEmpty]: Start isEmpty. Operand 7208 states and 11881 transitions. [2018-09-14 18:14:26,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-09-14 18:14:26,833 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:14:26,834 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:14:26,834 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:14:26,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1302575248, now seen corresponding path program 1 times [2018-09-14 18:14:26,835 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:14:26,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:26,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:26,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:26,837 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:14:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:27,135 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:14:27,537 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 18:14:27,537 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:14:27,537 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:14:27,538 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:14:27,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:14:27,539 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:14:27,539 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:14:27,539 INFO L87 Difference]: Start difference. First operand 7208 states and 11881 transitions. Second operand 6 states. [2018-09-14 18:14:32,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:14:32,801 INFO L93 Difference]: Finished difference Result 17365 states and 29107 transitions. [2018-09-14 18:14:32,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:14:32,801 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2018-09-14 18:14:32,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:14:32,856 INFO L225 Difference]: With dead ends: 17365 [2018-09-14 18:14:32,856 INFO L226 Difference]: Without dead ends: 10163 [2018-09-14 18:14:32,879 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:14:32,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2018-09-14 18:14:33,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 10108. [2018-09-14 18:14:33,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10108 states. [2018-09-14 18:14:33,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10108 states to 10108 states and 14258 transitions. [2018-09-14 18:14:33,134 INFO L78 Accepts]: Start accepts. Automaton has 10108 states and 14258 transitions. Word has length 189 [2018-09-14 18:14:33,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:14:33,135 INFO L480 AbstractCegarLoop]: Abstraction has 10108 states and 14258 transitions. [2018-09-14 18:14:33,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:14:33,135 INFO L276 IsEmpty]: Start isEmpty. Operand 10108 states and 14258 transitions. [2018-09-14 18:14:33,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-09-14 18:14:33,144 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:14:33,144 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, 1, 1, 1, 1, 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 18:14:33,144 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:14:33,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1778582221, now seen corresponding path program 1 times [2018-09-14 18:14:33,145 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:14:33,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:33,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:33,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:33,146 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:14:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-09-14 18:14:33,446 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:14:33,446 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:14:33,446 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:14:33,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:14:33,447 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:14:33,448 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:14:33,448 INFO L87 Difference]: Start difference. First operand 10108 states and 14258 transitions. Second operand 4 states. [2018-09-14 18:14:44,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:14:44,402 INFO L93 Difference]: Finished difference Result 28811 states and 41798 transitions. [2018-09-14 18:14:44,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:14:44,403 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 247 [2018-09-14 18:14:44,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:14:44,481 INFO L225 Difference]: With dead ends: 28811 [2018-09-14 18:14:44,481 INFO L226 Difference]: Without dead ends: 18709 [2018-09-14 18:14:44,524 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:14:44,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18709 states. [2018-09-14 18:14:44,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18709 to 18709. [2018-09-14 18:14:44,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18709 states. [2018-09-14 18:14:44,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18709 states to 18709 states and 25926 transitions. [2018-09-14 18:14:44,911 INFO L78 Accepts]: Start accepts. Automaton has 18709 states and 25926 transitions. Word has length 247 [2018-09-14 18:14:44,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:14:44,912 INFO L480 AbstractCegarLoop]: Abstraction has 18709 states and 25926 transitions. [2018-09-14 18:14:44,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:14:44,912 INFO L276 IsEmpty]: Start isEmpty. Operand 18709 states and 25926 transitions. [2018-09-14 18:14:44,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-09-14 18:14:44,933 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:14:44,934 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:14:44,934 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:14:44,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1669490635, now seen corresponding path program 1 times [2018-09-14 18:14:44,934 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:14:44,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:44,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:44,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:44,936 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:14:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:45,367 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 148 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:14:45,367 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:14:45,367 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 18:14:45,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:45,383 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:14:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:45,534 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:14:45,789 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-09-14 18:14:45,790 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:14:46,001 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-09-14 18:14:46,026 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 18:14:46,027 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2018-09-14 18:14:46,027 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:14:46,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:14:46,029 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:14:46,029 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-14 18:14:46,029 INFO L87 Difference]: Start difference. First operand 18709 states and 25926 transitions. Second operand 3 states. [2018-09-14 18:14:50,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:14:50,830 INFO L93 Difference]: Finished difference Result 37412 states and 51886 transitions. [2018-09-14 18:14:50,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:14:50,831 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 291 [2018-09-14 18:14:50,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:14:50,937 INFO L225 Difference]: With dead ends: 37412 [2018-09-14 18:14:50,937 INFO L226 Difference]: Without dead ends: 18709 [2018-09-14 18:14:51,013 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 583 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-14 18:14:51,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18709 states. [2018-09-14 18:14:51,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18709 to 17998. [2018-09-14 18:14:51,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17998 states. [2018-09-14 18:14:51,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17998 states to 17998 states and 23911 transitions. [2018-09-14 18:14:51,508 INFO L78 Accepts]: Start accepts. Automaton has 17998 states and 23911 transitions. Word has length 291 [2018-09-14 18:14:51,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:14:51,509 INFO L480 AbstractCegarLoop]: Abstraction has 17998 states and 23911 transitions. [2018-09-14 18:14:51,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:14:51,509 INFO L276 IsEmpty]: Start isEmpty. Operand 17998 states and 23911 transitions. [2018-09-14 18:14:51,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-09-14 18:14:51,526 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:14:51,527 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:14:51,527 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:14:51,528 INFO L82 PathProgramCache]: Analyzing trace with hash 932475385, now seen corresponding path program 1 times [2018-09-14 18:14:51,528 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:14:51,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:51,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:51,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:51,529 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:14:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:51,979 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 18:14:51,979 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:14:51,979 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 18:14:51,980 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:14:51,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:14:51,981 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:14:51,981 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 18:14:51,981 INFO L87 Difference]: Start difference. First operand 17998 states and 23911 transitions. Second operand 5 states. [2018-09-14 18:15:03,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:15:03,535 INFO L93 Difference]: Finished difference Result 56022 states and 75677 transitions. [2018-09-14 18:15:03,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:15:03,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 304 [2018-09-14 18:15:03,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:15:03,667 INFO L225 Difference]: With dead ends: 56022 [2018-09-14 18:15:03,667 INFO L226 Difference]: Without dead ends: 38030 [2018-09-14 18:15:03,723 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:15:03,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38030 states. [2018-09-14 18:15:04,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38030 to 36506. [2018-09-14 18:15:04,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36506 states. [2018-09-14 18:15:04,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36506 states to 36506 states and 45529 transitions. [2018-09-14 18:15:04,497 INFO L78 Accepts]: Start accepts. Automaton has 36506 states and 45529 transitions. Word has length 304 [2018-09-14 18:15:04,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:15:04,498 INFO L480 AbstractCegarLoop]: Abstraction has 36506 states and 45529 transitions. [2018-09-14 18:15:04,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:15:04,498 INFO L276 IsEmpty]: Start isEmpty. Operand 36506 states and 45529 transitions. [2018-09-14 18:15:04,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2018-09-14 18:15:04,562 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:15:04,562 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:15:04,563 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:15:04,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1557504778, now seen corresponding path program 1 times [2018-09-14 18:15:04,564 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:15:04,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:04,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:04,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:04,565 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:15:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:05,530 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 18:15:05,531 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:15:05,531 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 18:15:05,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:05,547 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:15:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:05,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:15:06,417 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 18:15:06,418 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:15:07,687 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 18:15:07,720 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:15:07,720 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:15:07,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:07,751 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:15:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:08,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:15:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 18:15:08,405 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:15:08,556 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 18:15:09,286 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (4)] Exception during sending of exit command (exit): Broken pipe [2018-09-14 18:15:09,291 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:15:09,291 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 18:15:09,292 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:15:09,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:15:09,293 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:15:09,293 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 18:15:09,296 INFO L87 Difference]: Start difference. First operand 36506 states and 45529 transitions. Second operand 9 states. [2018-09-14 18:15:19,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:15:19,754 INFO L93 Difference]: Finished difference Result 93404 states and 122063 transitions. [2018-09-14 18:15:19,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-14 18:15:19,754 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 481 [2018-09-14 18:15:19,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:15:19,943 INFO L225 Difference]: With dead ends: 93404 [2018-09-14 18:15:19,943 INFO L226 Difference]: Without dead ends: 56904 [2018-09-14 18:15:20,053 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1941 GetRequests, 1918 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-09-14 18:15:20,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56904 states. [2018-09-14 18:15:21,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56904 to 55895. [2018-09-14 18:15:21,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55895 states. [2018-09-14 18:15:21,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55895 states to 55895 states and 67792 transitions. [2018-09-14 18:15:21,274 INFO L78 Accepts]: Start accepts. Automaton has 55895 states and 67792 transitions. Word has length 481 [2018-09-14 18:15:21,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:15:21,276 INFO L480 AbstractCegarLoop]: Abstraction has 55895 states and 67792 transitions. [2018-09-14 18:15:21,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:15:21,276 INFO L276 IsEmpty]: Start isEmpty. Operand 55895 states and 67792 transitions. [2018-09-14 18:15:21,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2018-09-14 18:15:21,356 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:15:21,357 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:15:21,357 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:15:21,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1852128179, now seen corresponding path program 1 times [2018-09-14 18:15:21,358 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:15:21,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:21,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:21,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:21,359 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:15:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:21,974 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 232 proven. 96 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-09-14 18:15:21,974 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:15:21,974 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:15:21,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:21,983 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:15:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:22,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:15:22,674 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 402 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-14 18:15:22,674 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:15:23,144 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 232 proven. 96 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-09-14 18:15:23,165 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:15:23,165 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:15:23,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:23,182 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:15:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:23,496 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:15:24,056 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 402 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-14 18:15:24,057 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:15:24,363 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 232 proven. 96 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-09-14 18:15:24,365 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:15:24,366 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-14 18:15:24,366 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:15:24,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:15:24,367 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:15:24,367 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-09-14 18:15:24,368 INFO L87 Difference]: Start difference. First operand 55895 states and 67792 transitions. Second operand 9 states. [2018-09-14 18:15:39,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:15:39,986 INFO L93 Difference]: Finished difference Result 138496 states and 177647 transitions. [2018-09-14 18:15:39,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-14 18:15:39,988 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 524 [2018-09-14 18:15:39,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:15:40,335 INFO L225 Difference]: With dead ends: 138496 [2018-09-14 18:15:40,335 INFO L226 Difference]: Without dead ends: 83310 [2018-09-14 18:15:40,516 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2118 GetRequests, 2094 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2018-09-14 18:15:40,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83310 states. [2018-09-14 18:15:41,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83310 to 82494. [2018-09-14 18:15:41,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82494 states. [2018-09-14 18:15:41,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82494 states to 82494 states and 101790 transitions. [2018-09-14 18:15:41,967 INFO L78 Accepts]: Start accepts. Automaton has 82494 states and 101790 transitions. Word has length 524 [2018-09-14 18:15:41,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:15:41,967 INFO L480 AbstractCegarLoop]: Abstraction has 82494 states and 101790 transitions. [2018-09-14 18:15:41,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:15:41,968 INFO L276 IsEmpty]: Start isEmpty. Operand 82494 states and 101790 transitions. [2018-09-14 18:15:42,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2018-09-14 18:15:42,029 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:15:42,029 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:15:42,030 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:15:42,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1890440235, now seen corresponding path program 1 times [2018-09-14 18:15:42,030 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:15:42,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:42,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:42,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:42,032 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:15:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:42,764 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:15:43,379 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 88 proven. 118 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:15:43,379 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:15:43,379 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 18:15:43,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:43,386 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:15:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:43,526 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:15:43,715 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-09-14 18:15:43,715 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:15:44,124 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 88 proven. 85 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-09-14 18:15:44,145 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:15:44,145 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 3] total 9 [2018-09-14 18:15:44,145 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:15:44,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:15:44,146 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:15:44,146 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:15:44,147 INFO L87 Difference]: Start difference. First operand 82494 states and 101790 transitions. Second operand 3 states. [2018-09-14 18:15:49,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:15:49,747 INFO L93 Difference]: Finished difference Result 184842 states and 232458 transitions. [2018-09-14 18:15:49,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:15:49,747 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 563 [2018-09-14 18:15:49,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:15:50,267 INFO L225 Difference]: With dead ends: 184842 [2018-09-14 18:15:50,267 INFO L226 Difference]: Without dead ends: 102981 [2018-09-14 18:15:50,627 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1133 GetRequests, 1125 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:15:50,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102981 states. [2018-09-14 18:15:52,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102981 to 102965. [2018-09-14 18:15:52,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102965 states. [2018-09-14 18:15:52,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102965 states to 102965 states and 124363 transitions. [2018-09-14 18:15:52,656 INFO L78 Accepts]: Start accepts. Automaton has 102965 states and 124363 transitions. Word has length 563 [2018-09-14 18:15:52,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:15:52,656 INFO L480 AbstractCegarLoop]: Abstraction has 102965 states and 124363 transitions. [2018-09-14 18:15:52,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:15:52,656 INFO L276 IsEmpty]: Start isEmpty. Operand 102965 states and 124363 transitions. [2018-09-14 18:15:52,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2018-09-14 18:15:52,698 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:15:52,699 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:15:52,699 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:15:52,700 INFO L82 PathProgramCache]: Analyzing trace with hash 920639066, now seen corresponding path program 1 times [2018-09-14 18:15:52,700 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:15:52,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:52,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:52,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:52,701 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:15:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:53,363 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 92 proven. 386 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-09-14 18:15:53,363 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:15:53,363 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:15:53,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:53,893 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:15:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:54,060 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:15:54,266 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2018-09-14 18:15:54,267 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:15:54,594 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2018-09-14 18:15:54,614 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 18:15:54,615 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-09-14 18:15:54,615 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:15:54,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:15:54,616 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:15:54,617 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:15:54,617 INFO L87 Difference]: Start difference. First operand 102965 states and 124363 transitions. Second operand 3 states. [2018-09-14 18:16:01,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:16:01,148 INFO L93 Difference]: Finished difference Result 201847 states and 244500 transitions. [2018-09-14 18:16:01,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:16:01,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 703 [2018-09-14 18:16:01,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:16:01,455 INFO L225 Difference]: With dead ends: 201847 [2018-09-14 18:16:01,456 INFO L226 Difference]: Without dead ends: 99591 [2018-09-14 18:16:02,288 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1418 GetRequests, 1408 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:16:02,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99591 states. [2018-09-14 18:16:03,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99591 to 99591. [2018-09-14 18:16:03,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99591 states. [2018-09-14 18:16:03,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99591 states to 99591 states and 117511 transitions. [2018-09-14 18:16:03,876 INFO L78 Accepts]: Start accepts. Automaton has 99591 states and 117511 transitions. Word has length 703 [2018-09-14 18:16:03,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:16:03,879 INFO L480 AbstractCegarLoop]: Abstraction has 99591 states and 117511 transitions. [2018-09-14 18:16:03,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:16:03,879 INFO L276 IsEmpty]: Start isEmpty. Operand 99591 states and 117511 transitions. [2018-09-14 18:16:03,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 901 [2018-09-14 18:16:03,986 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:16:03,987 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:03,987 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:16:03,988 INFO L82 PathProgramCache]: Analyzing trace with hash -2117495947, now seen corresponding path program 1 times [2018-09-14 18:16:03,988 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:16:03,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:03,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:03,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:03,989 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:16:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:04,903 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 18:16:06,826 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 191 proven. 534 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:16:06,826 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:16:06,826 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:16:06,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:06,834 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:16:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:07,045 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:16:07,502 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 544 proven. 2 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2018-09-14 18:16:07,502 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:16:08,991 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 544 proven. 2 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2018-09-14 18:16:09,012 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:16:09,012 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:16:09,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:09,029 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:16:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:09,483 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:16:10,603 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 544 proven. 2 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2018-09-14 18:16:10,603 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:16:11,476 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 544 proven. 2 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2018-09-14 18:16:11,478 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:16:11,479 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 5, 5] total 20 [2018-09-14 18:16:11,479 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:16:11,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-14 18:16:11,481 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-14 18:16:11,481 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2018-09-14 18:16:11,482 INFO L87 Difference]: Start difference. First operand 99591 states and 117511 transitions. Second operand 14 states. [2018-09-14 18:16:14,378 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 21 [2018-09-14 18:16:39,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:16:39,759 INFO L93 Difference]: Finished difference Result 230868 states and 278112 transitions. [2018-09-14 18:16:39,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-14 18:16:39,759 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 900 [2018-09-14 18:16:39,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:16:40,105 INFO L225 Difference]: With dead ends: 230868 [2018-09-14 18:16:40,105 INFO L226 Difference]: Without dead ends: 130101 [2018-09-14 18:16:40,366 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3692 GetRequests, 3629 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1101 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=703, Invalid=3079, Unknown=0, NotChecked=0, Total=3782 [2018-09-14 18:16:40,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130101 states. [2018-09-14 18:16:42,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130101 to 128465. [2018-09-14 18:16:42,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128465 states. [2018-09-14 18:16:42,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128465 states to 128465 states and 144425 transitions. [2018-09-14 18:16:42,582 INFO L78 Accepts]: Start accepts. Automaton has 128465 states and 144425 transitions. Word has length 900 [2018-09-14 18:16:42,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:16:42,583 INFO L480 AbstractCegarLoop]: Abstraction has 128465 states and 144425 transitions. [2018-09-14 18:16:42,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-14 18:16:42,583 INFO L276 IsEmpty]: Start isEmpty. Operand 128465 states and 144425 transitions. [2018-09-14 18:16:42,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1132 [2018-09-14 18:16:42,714 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:16:42,715 INFO L376 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:42,715 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:16:42,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1536717727, now seen corresponding path program 1 times [2018-09-14 18:16:42,716 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:16:42,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:42,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:42,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:42,717 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:16:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:44,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 558 proven. 167 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2018-09-14 18:16:44,288 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:16:44,288 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 [2018-09-14 18:16:44,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:44,296 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:16:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:44,564 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:16:45,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 1300 proven. 2 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2018-09-14 18:16:45,474 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:16:46,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 558 proven. 167 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2018-09-14 18:16:46,081 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:16:46,081 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 [2018-09-14 18:16:46,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:46,096 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:16:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:46,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:16:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 1300 proven. 2 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2018-09-14 18:16:47,392 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:16:48,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 558 proven. 167 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2018-09-14 18:16:48,136 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:16:48,137 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 18:16:48,137 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:16:48,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:16:48,139 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:16:48,140 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 18:16:48,140 INFO L87 Difference]: Start difference. First operand 128465 states and 144425 transitions. Second operand 9 states. [2018-09-14 18:16:58,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:16:58,180 INFO L93 Difference]: Finished difference Result 248222 states and 276477 transitions. [2018-09-14 18:16:58,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-14 18:16:58,180 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1131 [2018-09-14 18:16:58,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:16:58,411 INFO L225 Difference]: With dead ends: 248222 [2018-09-14 18:16:58,411 INFO L226 Difference]: Without dead ends: 120466 [2018-09-14 18:16:58,591 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4542 GetRequests, 4519 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-09-14 18:16:58,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120466 states. [2018-09-14 18:16:59,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120466 to 116155. [2018-09-14 18:16:59,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116155 states. [2018-09-14 18:16:59,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116155 states to 116155 states and 125423 transitions. [2018-09-14 18:16:59,934 INFO L78 Accepts]: Start accepts. Automaton has 116155 states and 125423 transitions. Word has length 1131 [2018-09-14 18:16:59,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:16:59,934 INFO L480 AbstractCegarLoop]: Abstraction has 116155 states and 125423 transitions. [2018-09-14 18:16:59,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:16:59,935 INFO L276 IsEmpty]: Start isEmpty. Operand 116155 states and 125423 transitions. [2018-09-14 18:17:00,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1530 [2018-09-14 18:17:00,004 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:17:00,004 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:00,005 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:17:00,005 INFO L82 PathProgramCache]: Analyzing trace with hash 759401557, now seen corresponding path program 1 times [2018-09-14 18:17:00,005 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:17:00,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:17:00,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:17:00,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:17:00,006 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:17:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:17:02,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 461 proven. 73 refuted. 0 times theorem prover too weak. 1419 trivial. 0 not checked. [2018-09-14 18:17:02,423 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:17:02,423 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:17:02,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:17:02,432 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:17:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:17:02,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:17:03,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 1351 proven. 2 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2018-09-14 18:17:03,836 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:17:04,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 461 proven. 73 refuted. 0 times theorem prover too weak. 1419 trivial. 0 not checked. [2018-09-14 18:17:04,811 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:17:04,811 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 [2018-09-14 18:17:04,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:17:04,836 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:17:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:17:05,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:17:06,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 1351 proven. 2 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2018-09-14 18:17:06,431 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:17:07,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 461 proven. 73 refuted. 0 times theorem prover too weak. 1419 trivial. 0 not checked. [2018-09-14 18:17:07,385 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:17:07,386 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 18:17:07,386 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:17:07,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:17:07,388 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:17:07,389 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 18:17:07,389 INFO L87 Difference]: Start difference. First operand 116155 states and 125423 transitions. Second operand 9 states. [2018-09-14 18:17:19,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:17:19,165 INFO L93 Difference]: Finished difference Result 257735 states and 284237 transitions. [2018-09-14 18:17:19,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-14 18:17:19,172 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1529 [2018-09-14 18:17:19,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:17:19,577 INFO L225 Difference]: With dead ends: 257735 [2018-09-14 18:17:19,578 INFO L226 Difference]: Without dead ends: 130814 [2018-09-14 18:17:19,760 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6138 GetRequests, 6113 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-09-14 18:17:19,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130814 states. [2018-09-14 18:17:21,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130814 to 126006. [2018-09-14 18:17:21,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126006 states. [2018-09-14 18:17:21,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126006 states to 126006 states and 137294 transitions. [2018-09-14 18:17:21,642 INFO L78 Accepts]: Start accepts. Automaton has 126006 states and 137294 transitions. Word has length 1529 [2018-09-14 18:17:21,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:17:21,643 INFO L480 AbstractCegarLoop]: Abstraction has 126006 states and 137294 transitions. [2018-09-14 18:17:21,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:17:21,643 INFO L276 IsEmpty]: Start isEmpty. Operand 126006 states and 137294 transitions. [2018-09-14 18:17:21,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1563 [2018-09-14 18:17:21,726 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:17:21,727 INFO L376 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:21,728 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:17:21,728 INFO L82 PathProgramCache]: Analyzing trace with hash 833602568, now seen corresponding path program 1 times [2018-09-14 18:17:21,728 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:17:21,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:17:21,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:17:21,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:17:21,729 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:17:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:17:24,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2247 backedges. 296 proven. 1248 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2018-09-14 18:17:24,479 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:17:24,479 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 [2018-09-14 18:17:24,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:17:24,490 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:17:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:17:24,863 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:17:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2247 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2018-09-14 18:17:26,645 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:17:27,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2247 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2018-09-14 18:17:27,904 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 18:17:27,905 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2018-09-14 18:17:27,905 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:17:27,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:17:27,906 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:17:27,906 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:17:27,906 INFO L87 Difference]: Start difference. First operand 126006 states and 137294 transitions. Second operand 3 states. Received shutdown request... [2018-09-14 18:17:28,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-14 18:17:28,335 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 18:17:28,342 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 18:17:28,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 06:17:28 BoogieIcfgContainer [2018-09-14 18:17:28,343 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 18:17:28,343 INFO L168 Benchmark]: Toolchain (without parser) took 219549.10 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 872.0 MB in the end (delta: 537.7 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-09-14 18:17:28,344 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. [2018-09-14 18:17:28,345 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2037.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-09-14 18:17:28,346 INFO L168 Benchmark]: Boogie Procedure Inliner took 169.64 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-14 18:17:28,346 INFO L168 Benchmark]: Boogie Preprocessor took 747.30 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 864.0 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2018-09-14 18:17:28,347 INFO L168 Benchmark]: RCFGBuilder took 7816.60 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 488.4 MB). Peak memory consumption was 488.4 MB. Max. memory is 7.1 GB. [2018-09-14 18:17:28,348 INFO L168 Benchmark]: TraceAbstraction took 208767.86 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 872.0 MB in the end (delta: 922.5 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-09-14 18:17:28,352 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 2037.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 169.64 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 747.30 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 864.0 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7816.60 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 488.4 MB). Peak memory consumption was 488.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208767.86 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 872.0 MB in the end (delta: 922.5 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 141]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 141). Cancelled while BasicCegarLoop was constructing difference of abstraction (126006states) and FLOYD_HOARE automaton (currently 2 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (140 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 208.6s OverallTime, 15 OverallIterations, 7 TraceHistogramMax, 151.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5649 SDtfs, 60579 SDslu, 2843 SDs, 0 SdLazy, 93586 SolverSat, 20309 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 111.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24759 GetRequests, 24534 SyntacticMatches, 36 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1462 ImplicationChecksByTransitivity, 10.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128465occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 14.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 14973 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 4.5s SatisfiabilityAnalysisTime, 29.5s InterpolantComputationTime, 21051 NumberOfCodeBlocks, 21051 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 33257 ConstructedInterpolants, 50 QuantifiedInterpolants, 62421270 SizeOfPredicates, 11 NumberOfNonLiveVariables, 16289 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 43 InterpolantComputations, 13 PerfectInterpolantSequences, 32592/36043 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label40_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_18-17-28-366.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label40_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_18-17-28-366.csv Completed graceful shutdown