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/Problem14_label04_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:37:15,684 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:37:15,686 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:37:15,700 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:37:15,701 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:37:15,703 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:37:15,704 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:37:15,706 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:37:15,708 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:37:15,710 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:37:15,711 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:37:15,714 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:37:15,715 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:37:15,716 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:37:15,719 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:37:15,720 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:37:15,721 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:37:15,729 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:37:15,737 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:37:15,738 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:37:15,739 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:37:15,741 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:37:15,745 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:37:15,745 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:37:15,745 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:37:15,748 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:37:15,749 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:37:15,750 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:37:15,751 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:37:15,754 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:37:15,754 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:37:15,755 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:37:15,755 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:37:15,756 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:37:15,758 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:37:15,759 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:37:15,760 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 17:37:15,783 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:37:15,783 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:37:15,786 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:37:15,786 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:37:15,786 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:37:15,786 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:37:15,787 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:37:15,787 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:37:15,787 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:37:15,787 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:37:15,787 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:37:15,788 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:37:15,788 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:37:15,788 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:37:15,791 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:37:15,791 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:37:15,791 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:37:15,791 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:37:15,791 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:37:15,792 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:37:15,792 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:37:15,792 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:37:15,792 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:37:15,792 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:37:15,792 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:37:15,793 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:37:15,793 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:37:15,793 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:37:15,793 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:37:15,795 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:37:15,795 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:37:15,795 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:37:15,796 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:37:15,841 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:37:15,854 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:37:15,859 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:37:15,861 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:37:15,861 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:37:15,862 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label04_true-unreach-call_false-termination.c [2018-09-14 17:37:16,208 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f586809a3/55e6644568ab417cb3fb9aee54d63f81/FLAG245d96341 [2018-09-14 17:37:16,514 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:37:16,515 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label04_true-unreach-call_false-termination.c [2018-09-14 17:37:16,532 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f586809a3/55e6644568ab417cb3fb9aee54d63f81/FLAG245d96341 [2018-09-14 17:37:16,564 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f586809a3/55e6644568ab417cb3fb9aee54d63f81 [2018-09-14 17:37:16,577 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:37:16,581 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:37:16,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:37:16,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:37:16,592 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:37:16,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:37:16" (1/1) ... [2018-09-14 17:37:16,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bf5491e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:37:16, skipping insertion in model container [2018-09-14 17:37:16,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:37:16" (1/1) ... [2018-09-14 17:37:16,610 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:37:17,132 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:37:17,153 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:37:17,333 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:37:17,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:37:17 WrapperNode [2018-09-14 17:37:17,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:37:17,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:37:17,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:37:17,382 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:37:17,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:37:17" (1/1) ... [2018-09-14 17:37:17,435 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:37:17" (1/1) ... [2018-09-14 17:37:17,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:37:17,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:37:17,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:37:17,529 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:37:17,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:37:17" (1/1) ... [2018-09-14 17:37:17,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:37:17" (1/1) ... [2018-09-14 17:37:17,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:37:17" (1/1) ... [2018-09-14 17:37:17,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:37:17" (1/1) ... [2018-09-14 17:37:17,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:37:17" (1/1) ... [2018-09-14 17:37:17,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:37:17" (1/1) ... [2018-09-14 17:37:17,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:37:17" (1/1) ... [2018-09-14 17:37:17,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:37:17,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:37:17,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:37:17,805 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:37:17,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:37:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:37:17,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:37:17,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:37:17,888 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:37:17,888 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:37:17,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:37:17,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:37:17,888 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:37:17,888 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:37:21,860 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:37:21,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:37:21 BoogieIcfgContainer [2018-09-14 17:37:21,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:37:21,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:37:21,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:37:21,867 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:37:21,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:37:16" (1/3) ... [2018-09-14 17:37:21,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16080873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:37:21, skipping insertion in model container [2018-09-14 17:37:21,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:37:17" (2/3) ... [2018-09-14 17:37:21,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16080873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:37:21, skipping insertion in model container [2018-09-14 17:37:21,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:37:21" (3/3) ... [2018-09-14 17:37:21,871 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label04_true-unreach-call_false-termination.c [2018-09-14 17:37:21,881 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:37:21,890 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:37:21,943 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:37:21,944 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:37:21,944 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:37:21,944 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:37:21,945 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:37:21,945 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:37:21,945 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:37:21,945 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:37:21,945 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:37:21,974 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-09-14 17:37:21,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-14 17:37:21,989 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:37:21,992 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:37:21,993 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:37:21,999 INFO L82 PathProgramCache]: Analyzing trace with hash -670280511, now seen corresponding path program 1 times [2018-09-14 17:37:22,001 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:37:22,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:22,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:37:22,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:22,049 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:37:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:37:22,485 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:37:22,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:37:22,595 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:37:22,595 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:37:22,596 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:37:22,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:37:22,621 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:37:22,622 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:37:22,625 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-09-14 17:37:24,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:37:24,454 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-09-14 17:37:24,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:37:24,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2018-09-14 17:37:24,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:37:24,479 INFO L225 Difference]: With dead ends: 691 [2018-09-14 17:37:24,479 INFO L226 Difference]: Without dead ends: 434 [2018-09-14 17:37:24,487 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 17:37:24,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-09-14 17:37:24,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-09-14 17:37:24,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-09-14 17:37:24,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-09-14 17:37:24,579 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 59 [2018-09-14 17:37:24,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:37:24,580 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-09-14 17:37:24,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:37:24,581 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-09-14 17:37:24,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-09-14 17:37:24,589 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:37:24,589 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:37:24,590 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:37:24,590 INFO L82 PathProgramCache]: Analyzing trace with hash 2036233980, now seen corresponding path program 1 times [2018-09-14 17:37:24,590 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:37:24,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:24,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:37:24,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:24,592 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:37:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:37:24,977 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:37:25,062 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:37:25,063 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:37:25,063 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:37:25,063 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:37:25,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:37:25,066 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:37:25,066 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:37:25,066 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-09-14 17:37:28,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:37:28,454 INFO L93 Difference]: Finished difference Result 1588 states and 2935 transitions. [2018-09-14 17:37:28,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:37:28,455 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-09-14 17:37:28,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:37:28,471 INFO L225 Difference]: With dead ends: 1588 [2018-09-14 17:37:28,471 INFO L226 Difference]: Without dead ends: 1160 [2018-09-14 17:37:28,476 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:37:28,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2018-09-14 17:37:28,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1153. [2018-09-14 17:37:28,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2018-09-14 17:37:28,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1887 transitions. [2018-09-14 17:37:28,548 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1887 transitions. Word has length 129 [2018-09-14 17:37:28,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:37:28,549 INFO L480 AbstractCegarLoop]: Abstraction has 1153 states and 1887 transitions. [2018-09-14 17:37:28,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:37:28,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1887 transitions. [2018-09-14 17:37:28,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-09-14 17:37:28,553 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:37:28,554 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:37:28,554 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:37:28,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1284385993, now seen corresponding path program 1 times [2018-09-14 17:37:28,555 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:37:28,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:28,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:37:28,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:28,556 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:37:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:37:28,783 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:37:28,783 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:37:28,784 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:37:28,784 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:37:28,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:37:28,785 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:37:28,785 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:37:28,785 INFO L87 Difference]: Start difference. First operand 1153 states and 1887 transitions. Second operand 5 states. [2018-09-14 17:37:31,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:37:31,522 INFO L93 Difference]: Finished difference Result 2716 states and 4601 transitions. [2018-09-14 17:37:31,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:37:31,531 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-09-14 17:37:31,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:37:31,542 INFO L225 Difference]: With dead ends: 2716 [2018-09-14 17:37:31,543 INFO L226 Difference]: Without dead ends: 1569 [2018-09-14 17:37:31,547 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:37:31,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2018-09-14 17:37:31,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1538. [2018-09-14 17:37:31,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1538 states. [2018-09-14 17:37:31,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2356 transitions. [2018-09-14 17:37:31,599 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2356 transitions. Word has length 130 [2018-09-14 17:37:31,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:37:31,600 INFO L480 AbstractCegarLoop]: Abstraction has 1538 states and 2356 transitions. [2018-09-14 17:37:31,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:37:31,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2356 transitions. [2018-09-14 17:37:31,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-09-14 17:37:31,605 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:37:31,605 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:37:31,605 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:37:31,605 INFO L82 PathProgramCache]: Analyzing trace with hash 516676699, now seen corresponding path program 1 times [2018-09-14 17:37:31,606 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:37:31,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:31,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:37:31,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:31,607 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:37:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:37:31,795 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:37:31,795 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:37:31,795 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:37:31,795 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:37:31,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:37:31,796 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:37:31,796 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:37:31,797 INFO L87 Difference]: Start difference. First operand 1538 states and 2356 transitions. Second operand 5 states. [2018-09-14 17:37:34,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:37:34,660 INFO L93 Difference]: Finished difference Result 4906 states and 7504 transitions. [2018-09-14 17:37:34,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:37:34,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-09-14 17:37:34,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:37:34,684 INFO L225 Difference]: With dead ends: 4906 [2018-09-14 17:37:34,684 INFO L226 Difference]: Without dead ends: 3374 [2018-09-14 17:37:34,696 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:37:34,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3374 states. [2018-09-14 17:37:34,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3374 to 3263. [2018-09-14 17:37:34,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3263 states. [2018-09-14 17:37:34,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 4437 transitions. [2018-09-14 17:37:34,809 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 4437 transitions. Word has length 132 [2018-09-14 17:37:34,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:37:34,810 INFO L480 AbstractCegarLoop]: Abstraction has 3263 states and 4437 transitions. [2018-09-14 17:37:34,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:37:34,811 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 4437 transitions. [2018-09-14 17:37:34,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-09-14 17:37:34,818 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:37:34,819 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:37:34,819 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:37:34,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1486188283, now seen corresponding path program 1 times [2018-09-14 17:37:34,819 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:37:34,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:34,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:37:34,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:34,822 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:37:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:37:35,619 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:37:35,619 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:37:35,620 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:37:35,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:37:35,629 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:37:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:37:35,725 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:37:36,423 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-14 17:37:36,541 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-09-14 17:37:36,541 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:37:36,805 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-14 17:37:36,954 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2018-09-14 17:37:37,930 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-14 17:37:38,204 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 104 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:37:38,226 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:37:38,226 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 5] total 16 [2018-09-14 17:37:38,227 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:37:38,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:37:38,228 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:37:38,228 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2018-09-14 17:37:38,228 INFO L87 Difference]: Start difference. First operand 3263 states and 4437 transitions. Second operand 5 states. [2018-09-14 17:37:38,519 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 17:37:41,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:37:41,229 INFO L93 Difference]: Finished difference Result 8194 states and 11071 transitions. [2018-09-14 17:37:41,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:37:41,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2018-09-14 17:37:41,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:37:41,258 INFO L225 Difference]: With dead ends: 8194 [2018-09-14 17:37:41,258 INFO L226 Difference]: Without dead ends: 4937 [2018-09-14 17:37:41,273 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 429 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2018-09-14 17:37:41,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4937 states. [2018-09-14 17:37:41,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4937 to 4239. [2018-09-14 17:37:41,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4239 states. [2018-09-14 17:37:41,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4239 states to 4239 states and 5642 transitions. [2018-09-14 17:37:41,400 INFO L78 Accepts]: Start accepts. Automaton has 4239 states and 5642 transitions. Word has length 217 [2018-09-14 17:37:41,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:37:41,401 INFO L480 AbstractCegarLoop]: Abstraction has 4239 states and 5642 transitions. [2018-09-14 17:37:41,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:37:41,401 INFO L276 IsEmpty]: Start isEmpty. Operand 4239 states and 5642 transitions. [2018-09-14 17:37:41,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-09-14 17:37:41,408 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:37:41,408 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-14 17:37:41,408 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:37:41,409 INFO L82 PathProgramCache]: Analyzing trace with hash 597684751, now seen corresponding path program 1 times [2018-09-14 17:37:41,409 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:37:41,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:41,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:37:41,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:41,410 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:37:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:37:42,421 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 115 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:37:42,422 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:37:42,422 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:37:42,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:37:42,430 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:37:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:37:42,502 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:37:42,722 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-09-14 17:37:42,723 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:37:43,038 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 104 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:37:43,059 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:37:43,060 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 5] total 14 [2018-09-14 17:37:43,060 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:37:43,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:37:43,061 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:37:43,061 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-09-14 17:37:43,061 INFO L87 Difference]: Start difference. First operand 4239 states and 5642 transitions. Second operand 5 states. [2018-09-14 17:37:46,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:37:46,521 INFO L93 Difference]: Finished difference Result 12329 states and 16826 transitions. [2018-09-14 17:37:46,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:37:46,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 243 [2018-09-14 17:37:46,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:37:46,559 INFO L225 Difference]: With dead ends: 12329 [2018-09-14 17:37:46,559 INFO L226 Difference]: Without dead ends: 8096 [2018-09-14 17:37:46,587 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 481 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2018-09-14 17:37:46,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8096 states. [2018-09-14 17:37:46,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8096 to 8020. [2018-09-14 17:37:46,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8020 states. [2018-09-14 17:37:46,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8020 states to 8020 states and 10439 transitions. [2018-09-14 17:37:46,788 INFO L78 Accepts]: Start accepts. Automaton has 8020 states and 10439 transitions. Word has length 243 [2018-09-14 17:37:46,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:37:46,795 INFO L480 AbstractCegarLoop]: Abstraction has 8020 states and 10439 transitions. [2018-09-14 17:37:46,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:37:46,795 INFO L276 IsEmpty]: Start isEmpty. Operand 8020 states and 10439 transitions. [2018-09-14 17:37:46,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-09-14 17:37:46,818 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:37:46,818 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:37:46,819 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:37:46,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1576427027, now seen corresponding path program 1 times [2018-09-14 17:37:46,819 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:37:46,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:46,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:37:46,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:46,820 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:37:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:37:47,269 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 17:37:47,478 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-14 17:37:47,696 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 17:37:48,197 WARN L178 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-09-14 17:37:48,760 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-09-14 17:37:49,019 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 243 proven. 140 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:37:49,019 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:37:49,019 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:37:49,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:37:49,028 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:37:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:37:49,122 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:37:49,382 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 283 proven. 52 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-09-14 17:37:49,382 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:37:49,781 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-14 17:37:50,117 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 166 proven. 217 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:37:50,138 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:37:50,138 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:37:50,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:37:50,155 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:37:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:37:50,353 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:37:50,848 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 283 proven. 52 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-09-14 17:37:50,848 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:37:51,378 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 166 proven. 217 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:37:51,381 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:37:51,381 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8, 8, 8] total 26 [2018-09-14 17:37:51,381 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:37:51,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-14 17:37:51,384 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-14 17:37:51,384 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2018-09-14 17:37:51,388 INFO L87 Difference]: Start difference. First operand 8020 states and 10439 transitions. Second operand 15 states. [2018-09-14 17:37:56,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:37:56,450 INFO L93 Difference]: Finished difference Result 16390 states and 21513 transitions. [2018-09-14 17:37:56,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-14 17:37:56,450 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 302 [2018-09-14 17:37:56,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:37:56,487 INFO L225 Difference]: With dead ends: 16390 [2018-09-14 17:37:56,488 INFO L226 Difference]: Without dead ends: 8159 [2018-09-14 17:37:56,517 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1251 GetRequests, 1207 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2018-09-14 17:37:56,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8159 states. [2018-09-14 17:37:56,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8159 to 7209. [2018-09-14 17:37:56,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7209 states. [2018-09-14 17:37:56,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7209 states to 7209 states and 8756 transitions. [2018-09-14 17:37:56,696 INFO L78 Accepts]: Start accepts. Automaton has 7209 states and 8756 transitions. Word has length 302 [2018-09-14 17:37:56,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:37:56,696 INFO L480 AbstractCegarLoop]: Abstraction has 7209 states and 8756 transitions. [2018-09-14 17:37:56,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-14 17:37:56,697 INFO L276 IsEmpty]: Start isEmpty. Operand 7209 states and 8756 transitions. [2018-09-14 17:37:56,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-09-14 17:37:56,706 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:37:56,706 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:37:56,707 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:37:56,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1143820971, now seen corresponding path program 1 times [2018-09-14 17:37:56,707 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:37:56,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:56,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:37:56,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:56,708 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:37:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:37:57,077 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-14 17:37:57,995 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 363 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:37:57,996 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:37:57,996 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:37:58,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:37:58,004 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:37:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:37:58,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:37:58,230 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 305 proven. 2 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-09-14 17:37:58,230 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:37:58,574 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 305 proven. 2 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-09-14 17:37:58,595 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:37:58,595 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 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:37:58,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:37:58,611 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:37:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:37:58,826 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:37:58,890 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 301 proven. 6 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-09-14 17:37:58,890 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:37:59,214 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 305 proven. 2 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-09-14 17:37:59,216 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:37:59,216 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 5, 5] total 16 [2018-09-14 17:37:59,217 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:37:59,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-14 17:37:59,217 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-14 17:37:59,218 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-09-14 17:37:59,218 INFO L87 Difference]: Start difference. First operand 7209 states and 8756 transitions. Second operand 14 states. [2018-09-14 17:38:05,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:38:05,917 INFO L93 Difference]: Finished difference Result 17939 states and 22934 transitions. [2018-09-14 17:38:05,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-14 17:38:05,917 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 354 [2018-09-14 17:38:05,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:38:05,978 INFO L225 Difference]: With dead ends: 17939 [2018-09-14 17:38:05,978 INFO L226 Difference]: Without dead ends: 10736 [2018-09-14 17:38:06,015 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1486 GetRequests, 1440 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=445, Invalid=1717, Unknown=0, NotChecked=0, Total=2162 [2018-09-14 17:38:06,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10736 states. [2018-09-14 17:38:06,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10736 to 10496. [2018-09-14 17:38:06,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10496 states. [2018-09-14 17:38:06,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10496 states to 10496 states and 12389 transitions. [2018-09-14 17:38:06,231 INFO L78 Accepts]: Start accepts. Automaton has 10496 states and 12389 transitions. Word has length 354 [2018-09-14 17:38:06,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:38:06,232 INFO L480 AbstractCegarLoop]: Abstraction has 10496 states and 12389 transitions. [2018-09-14 17:38:06,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-14 17:38:06,232 INFO L276 IsEmpty]: Start isEmpty. Operand 10496 states and 12389 transitions. [2018-09-14 17:38:06,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-09-14 17:38:06,242 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:38:06,242 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:38:06,242 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:38:06,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1579032322, now seen corresponding path program 1 times [2018-09-14 17:38:06,243 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:38:06,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:38:06,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:06,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:38:06,244 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:38:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:06,532 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2018-09-14 17:38:06,532 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:38:06,533 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:38:06,533 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:38:06,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:38:06,534 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:38:06,534 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:38:06,534 INFO L87 Difference]: Start difference. First operand 10496 states and 12389 transitions. Second operand 3 states. [2018-09-14 17:38:08,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:38:08,738 INFO L93 Difference]: Finished difference Result 24373 states and 30079 transitions. [2018-09-14 17:38:08,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:38:08,740 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 365 [2018-09-14 17:38:08,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:38:08,797 INFO L225 Difference]: With dead ends: 24373 [2018-09-14 17:38:08,797 INFO L226 Difference]: Without dead ends: 13883 [2018-09-14 17:38:08,842 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:38:08,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13883 states. [2018-09-14 17:38:09,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13883 to 13869. [2018-09-14 17:38:09,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13869 states. [2018-09-14 17:38:09,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13869 states to 13869 states and 16425 transitions. [2018-09-14 17:38:09,118 INFO L78 Accepts]: Start accepts. Automaton has 13869 states and 16425 transitions. Word has length 365 [2018-09-14 17:38:09,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:38:09,119 INFO L480 AbstractCegarLoop]: Abstraction has 13869 states and 16425 transitions. [2018-09-14 17:38:09,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:38:09,119 INFO L276 IsEmpty]: Start isEmpty. Operand 13869 states and 16425 transitions. [2018-09-14 17:38:09,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2018-09-14 17:38:09,161 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:38:09,162 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:38:09,162 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:38:09,164 INFO L82 PathProgramCache]: Analyzing trace with hash -2088360157, now seen corresponding path program 1 times [2018-09-14 17:38:09,164 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:38:09,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:38:09,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:09,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:38:09,165 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:38:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:09,881 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 548 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-09-14 17:38:09,881 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:38:09,881 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 17:38:09,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:09,893 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:38:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:10,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:38:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 548 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-09-14 17:38:10,298 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:38:10,685 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 548 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-09-14 17:38:10,706 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:38:10,706 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:38:10,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:10,727 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:38:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:11,012 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:38:11,162 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 548 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-09-14 17:38:11,162 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:38:11,874 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 548 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-09-14 17:38:11,876 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:38:11,876 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 9 [2018-09-14 17:38:11,877 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:38:11,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 17:38:11,878 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 17:38:11,878 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:38:11,879 INFO L87 Difference]: Start difference. First operand 13869 states and 16425 transitions. Second operand 7 states. [2018-09-14 17:38:14,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:38:14,849 INFO L93 Difference]: Finished difference Result 34559 states and 49055 transitions. [2018-09-14 17:38:14,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-14 17:38:14,850 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 513 [2018-09-14 17:38:14,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:38:15,027 INFO L225 Difference]: With dead ends: 34559 [2018-09-14 17:38:15,027 INFO L226 Difference]: Without dead ends: 20696 [2018-09-14 17:38:15,150 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2068 GetRequests, 2053 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-09-14 17:38:15,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20696 states. [2018-09-14 17:38:15,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20696 to 20093. [2018-09-14 17:38:15,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20093 states. [2018-09-14 17:38:16,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20093 states to 20093 states and 25289 transitions. [2018-09-14 17:38:16,064 INFO L78 Accepts]: Start accepts. Automaton has 20093 states and 25289 transitions. Word has length 513 [2018-09-14 17:38:16,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:38:16,065 INFO L480 AbstractCegarLoop]: Abstraction has 20093 states and 25289 transitions. [2018-09-14 17:38:16,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 17:38:16,065 INFO L276 IsEmpty]: Start isEmpty. Operand 20093 states and 25289 transitions. [2018-09-14 17:38:16,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2018-09-14 17:38:16,098 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:38:16,098 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:38:16,099 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:38:16,099 INFO L82 PathProgramCache]: Analyzing trace with hash -686063236, now seen corresponding path program 1 times [2018-09-14 17:38:16,099 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:38:16,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:38:16,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:16,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:38:16,100 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:38:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:16,637 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-14 17:38:16,840 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-14 17:38:17,106 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-09-14 17:38:17,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 564 proven. 369 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2018-09-14 17:38:17,534 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:38:17,534 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:38:17,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:17,543 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:38:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:17,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:38:17,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 759 proven. 2 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2018-09-14 17:38:17,991 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:38:18,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 531 proven. 73 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2018-09-14 17:38:18,717 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:38:18,718 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:38:18,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:18,738 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:38:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:19,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:38:19,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 605 proven. 156 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2018-09-14 17:38:19,607 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:38:20,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 296 proven. 513 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-14 17:38:20,250 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:38:20,251 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 8, 8] total 16 [2018-09-14 17:38:20,251 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:38:20,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-14 17:38:20,252 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-14 17:38:20,252 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2018-09-14 17:38:20,252 INFO L87 Difference]: Start difference. First operand 20093 states and 25289 transitions. Second operand 13 states. [2018-09-14 17:38:24,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:38:24,311 INFO L93 Difference]: Finished difference Result 40641 states and 54128 transitions. [2018-09-14 17:38:24,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-14 17:38:24,311 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 523 [2018-09-14 17:38:24,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:38:24,468 INFO L225 Difference]: With dead ends: 40641 [2018-09-14 17:38:24,469 INFO L226 Difference]: Without dead ends: 20335 [2018-09-14 17:38:24,566 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2120 GetRequests, 2082 SyntacticMatches, 15 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2018-09-14 17:38:24,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20335 states. [2018-09-14 17:38:25,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20335 to 19819. [2018-09-14 17:38:25,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19819 states. [2018-09-14 17:38:25,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19819 states to 19819 states and 24221 transitions. [2018-09-14 17:38:25,180 INFO L78 Accepts]: Start accepts. Automaton has 19819 states and 24221 transitions. Word has length 523 [2018-09-14 17:38:25,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:38:25,180 INFO L480 AbstractCegarLoop]: Abstraction has 19819 states and 24221 transitions. [2018-09-14 17:38:25,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-14 17:38:25,181 INFO L276 IsEmpty]: Start isEmpty. Operand 19819 states and 24221 transitions. [2018-09-14 17:38:25,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2018-09-14 17:38:25,220 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:38:25,220 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:38:25,220 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:38:25,221 INFO L82 PathProgramCache]: Analyzing trace with hash -185454448, now seen corresponding path program 1 times [2018-09-14 17:38:25,221 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:38:25,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:38:25,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:25,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:38:25,222 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:38:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:25,637 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-14 17:38:25,884 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-09-14 17:38:26,244 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 18 [2018-09-14 17:38:27,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 551 proven. 519 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-09-14 17:38:27,042 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:38:27,042 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:38:27,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:27,050 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:38:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:27,186 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:38:27,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 759 proven. 2 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2018-09-14 17:38:27,414 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:38:27,602 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2018-09-14 17:38:28,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 531 proven. 73 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2018-09-14 17:38:28,254 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:38:28,255 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 13 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:38:28,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:28,271 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:38:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:28,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:38:28,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 752 proven. 13 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2018-09-14 17:38:28,929 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:38:29,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 278 proven. 531 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-09-14 17:38:29,961 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:38:29,962 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 5, 5, 8, 8] total 30 [2018-09-14 17:38:29,962 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:38:29,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-14 17:38:29,963 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-14 17:38:29,964 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=732, Unknown=0, NotChecked=0, Total=870 [2018-09-14 17:38:29,965 INFO L87 Difference]: Start difference. First operand 19819 states and 24221 transitions. Second operand 21 states. [2018-09-14 17:38:32,459 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2018-09-14 17:38:38,474 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2018-09-14 17:38:39,961 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2018-09-14 17:38:40,837 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 15 [2018-09-14 17:38:42,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:38:42,845 INFO L93 Difference]: Finished difference Result 38744 states and 49125 transitions. [2018-09-14 17:38:42,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-09-14 17:38:42,847 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 549 [2018-09-14 17:38:42,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:38:42,945 INFO L225 Difference]: With dead ends: 38744 [2018-09-14 17:38:42,945 INFO L226 Difference]: Without dead ends: 18931 [2018-09-14 17:38:43,052 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2312 GetRequests, 2225 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2036 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1347, Invalid=5793, Unknown=0, NotChecked=0, Total=7140 [2018-09-14 17:38:43,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18931 states. [2018-09-14 17:38:43,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18931 to 17871. [2018-09-14 17:38:43,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17871 states. [2018-09-14 17:38:43,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17871 states to 17871 states and 20643 transitions. [2018-09-14 17:38:43,453 INFO L78 Accepts]: Start accepts. Automaton has 17871 states and 20643 transitions. Word has length 549 [2018-09-14 17:38:43,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:38:43,453 INFO L480 AbstractCegarLoop]: Abstraction has 17871 states and 20643 transitions. [2018-09-14 17:38:43,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-14 17:38:43,454 INFO L276 IsEmpty]: Start isEmpty. Operand 17871 states and 20643 transitions. [2018-09-14 17:38:43,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2018-09-14 17:38:43,462 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:38:43,463 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:38:43,463 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:38:43,463 INFO L82 PathProgramCache]: Analyzing trace with hash 735915075, now seen corresponding path program 1 times [2018-09-14 17:38:43,463 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:38:43,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:38:43,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:43,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:38:43,465 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:38:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:43,890 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-14 17:38:44,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 774 proven. 343 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-14 17:38:44,878 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:38:44,878 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:38:44,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:44,887 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:38:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:45,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:38:45,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 563 proven. 2 refuted. 0 times theorem prover too weak. 568 trivial. 0 not checked. [2018-09-14 17:38:45,661 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:38:46,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 563 proven. 2 refuted. 0 times theorem prover too weak. 568 trivial. 0 not checked. [2018-09-14 17:38:46,415 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:38:46,416 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:38:46,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:46,431 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:38:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:46,753 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:38:47,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 565 proven. 18 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2018-09-14 17:38:47,633 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:38:48,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 563 proven. 2 refuted. 0 times theorem prover too weak. 568 trivial. 0 not checked. [2018-09-14 17:38:48,255 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:38:48,255 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 6, 5] total 23 [2018-09-14 17:38:48,255 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:38:48,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-14 17:38:48,256 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-14 17:38:48,257 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2018-09-14 17:38:48,257 INFO L87 Difference]: Start difference. First operand 17871 states and 20643 transitions. Second operand 15 states. [2018-09-14 17:38:59,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:38:59,550 INFO L93 Difference]: Finished difference Result 37508 states and 48798 transitions. [2018-09-14 17:38:59,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-14 17:38:59,550 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 554 [2018-09-14 17:38:59,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:38:59,770 INFO L225 Difference]: With dead ends: 37508 [2018-09-14 17:38:59,770 INFO L226 Difference]: Without dead ends: 19643 [2018-09-14 17:38:59,888 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2318 GetRequests, 2241 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1821 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=903, Invalid=4797, Unknown=0, NotChecked=0, Total=5700 [2018-09-14 17:38:59,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19643 states. [2018-09-14 17:39:00,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19643 to 18744. [2018-09-14 17:39:00,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18744 states. [2018-09-14 17:39:00,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18744 states to 18744 states and 23315 transitions. [2018-09-14 17:39:00,674 INFO L78 Accepts]: Start accepts. Automaton has 18744 states and 23315 transitions. Word has length 554 [2018-09-14 17:39:00,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:39:00,675 INFO L480 AbstractCegarLoop]: Abstraction has 18744 states and 23315 transitions. [2018-09-14 17:39:00,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-14 17:39:00,675 INFO L276 IsEmpty]: Start isEmpty. Operand 18744 states and 23315 transitions. [2018-09-14 17:39:00,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2018-09-14 17:39:00,690 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:39:00,690 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 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] [2018-09-14 17:39:00,690 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:39:00,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1889513484, now seen corresponding path program 1 times [2018-09-14 17:39:00,691 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:39:00,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:00,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:00,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:00,692 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:39:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:01,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1381 backedges. 718 proven. 2 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2018-09-14 17:39:01,303 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:39:01,303 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:39:01,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:01,313 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:39:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:01,468 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:39:02,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1381 backedges. 718 proven. 2 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2018-09-14 17:39:02,090 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:39:02,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1381 backedges. 718 proven. 2 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2018-09-14 17:39:02,408 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:39:02,408 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:39:02,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:02,424 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:39:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:02,777 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:39:02,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1381 backedges. 718 proven. 2 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2018-09-14 17:39:02,968 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:39:03,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1381 backedges. 718 proven. 2 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2018-09-14 17:39:03,258 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:39:03,259 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 9 [2018-09-14 17:39:03,259 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:39:03,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 17:39:03,260 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 17:39:03,260 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:39:03,260 INFO L87 Difference]: Start difference. First operand 18744 states and 23315 transitions. Second operand 7 states. [2018-09-14 17:39:05,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:39:05,786 INFO L93 Difference]: Finished difference Result 38838 states and 48576 transitions. [2018-09-14 17:39:05,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-14 17:39:05,787 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 673 [2018-09-14 17:39:05,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:39:05,896 INFO L225 Difference]: With dead ends: 38838 [2018-09-14 17:39:05,896 INFO L226 Difference]: Without dead ends: 20100 [2018-09-14 17:39:06,023 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2708 GetRequests, 2693 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-09-14 17:39:06,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20100 states. [2018-09-14 17:39:06,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20100 to 19968. [2018-09-14 17:39:06,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19968 states. [2018-09-14 17:39:06,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19968 states to 19968 states and 24092 transitions. [2018-09-14 17:39:06,566 INFO L78 Accepts]: Start accepts. Automaton has 19968 states and 24092 transitions. Word has length 673 [2018-09-14 17:39:06,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:39:06,567 INFO L480 AbstractCegarLoop]: Abstraction has 19968 states and 24092 transitions. [2018-09-14 17:39:06,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 17:39:06,567 INFO L276 IsEmpty]: Start isEmpty. Operand 19968 states and 24092 transitions. [2018-09-14 17:39:06,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2018-09-14 17:39:06,579 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:39:06,579 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 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] [2018-09-14 17:39:06,580 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:39:06,580 INFO L82 PathProgramCache]: Analyzing trace with hash 112633644, now seen corresponding path program 1 times [2018-09-14 17:39:06,580 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:39:06,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:06,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:06,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:06,581 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:39:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:07,275 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 17:39:07,464 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 17:39:09,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1818 backedges. 684 proven. 765 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2018-09-14 17:39:09,546 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:39:09,547 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:39:09,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:09,555 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:39:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:09,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:39:10,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1818 backedges. 1308 proven. 2 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2018-09-14 17:39:10,055 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:39:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1818 backedges. 685 proven. 188 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2018-09-14 17:39:10,779 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:39:10,779 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 19 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 19 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:39:10,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:10,801 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:39:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:11,223 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:39:13,830 WARN L178 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-09-14 17:39:14,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1818 backedges. 802 proven. 50 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2018-09-14 17:39:14,626 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:39:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1818 backedges. 850 proven. 2 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2018-09-14 17:39:18,850 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:39:18,851 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5, 6, 6] total 28 [2018-09-14 17:39:18,851 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:39:18,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-14 17:39:18,853 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-14 17:39:18,853 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=635, Unknown=1, NotChecked=0, Total=756 [2018-09-14 17:39:18,854 INFO L87 Difference]: Start difference. First operand 19968 states and 24092 transitions. Second operand 18 states. [2018-09-14 17:39:19,734 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 28 [2018-09-14 17:39:20,960 WARN L178 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 28 [2018-09-14 17:39:26,639 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2018-09-14 17:39:26,928 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2018-09-14 17:39:28,268 WARN L178 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2018-09-14 17:39:30,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:39:30,039 INFO L93 Difference]: Finished difference Result 42039 states and 51231 transitions. [2018-09-14 17:39:30,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-14 17:39:30,040 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 768 [2018-09-14 17:39:30,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:39:30,135 INFO L225 Difference]: With dead ends: 42039 [2018-09-14 17:39:30,135 INFO L226 Difference]: Without dead ends: 22077 [2018-09-14 17:39:30,259 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3159 GetRequests, 3088 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1398 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=907, Invalid=4204, Unknown=1, NotChecked=0, Total=5112 [2018-09-14 17:39:30,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22077 states. [2018-09-14 17:39:30,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22077 to 21344. [2018-09-14 17:39:30,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21344 states. [2018-09-14 17:39:30,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21344 states to 21344 states and 24179 transitions. [2018-09-14 17:39:30,728 INFO L78 Accepts]: Start accepts. Automaton has 21344 states and 24179 transitions. Word has length 768 [2018-09-14 17:39:30,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:39:30,729 INFO L480 AbstractCegarLoop]: Abstraction has 21344 states and 24179 transitions. [2018-09-14 17:39:30,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-14 17:39:30,729 INFO L276 IsEmpty]: Start isEmpty. Operand 21344 states and 24179 transitions. [2018-09-14 17:39:30,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2018-09-14 17:39:30,736 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:39:30,736 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:39:30,736 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:39:30,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1987097961, now seen corresponding path program 1 times [2018-09-14 17:39:30,737 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:39:30,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:30,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:30,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:30,738 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:39:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:31,195 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:39:32,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1851 backedges. 726 proven. 581 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2018-09-14 17:39:32,450 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:39:32,450 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:39:32,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:32,458 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:39:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:32,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:39:33,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1851 backedges. 1135 proven. 2 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2018-09-14 17:39:33,116 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:39:34,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1851 backedges. 838 proven. 73 refuted. 0 times theorem prover too weak. 940 trivial. 0 not checked. [2018-09-14 17:39:34,631 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:39:34,631 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 21 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 21 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:39:34,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:34,647 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:39:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:35,071 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:39:35,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1851 backedges. 1135 proven. 2 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2018-09-14 17:39:35,484 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:39:37,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1851 backedges. 838 proven. 73 refuted. 0 times theorem prover too weak. 940 trivial. 0 not checked. [2018-09-14 17:39:37,131 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:39:37,132 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5, 5, 5] total 24 [2018-09-14 17:39:37,132 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:39:37,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-14 17:39:37,133 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-14 17:39:37,134 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2018-09-14 17:39:37,134 INFO L87 Difference]: Start difference. First operand 21344 states and 24179 transitions. Second operand 17 states. [2018-09-14 17:39:44,461 WARN L178 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 17 [2018-09-14 17:39:47,232 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2018-09-14 17:39:52,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:39:52,994 INFO L93 Difference]: Finished difference Result 44066 states and 50508 transitions. [2018-09-14 17:39:52,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-09-14 17:39:52,995 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 795 [2018-09-14 17:39:52,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:39:53,063 INFO L225 Difference]: With dead ends: 44066 [2018-09-14 17:39:53,063 INFO L226 Difference]: Without dead ends: 22913 [2018-09-14 17:39:53,118 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3340 GetRequests, 3233 SyntacticMatches, 6 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3563 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1828, Invalid=8678, Unknown=0, NotChecked=0, Total=10506 [2018-09-14 17:39:53,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22913 states. [2018-09-14 17:39:53,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22913 to 22004. [2018-09-14 17:39:53,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22004 states. [2018-09-14 17:39:53,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22004 states to 22004 states and 23998 transitions. [2018-09-14 17:39:53,523 INFO L78 Accepts]: Start accepts. Automaton has 22004 states and 23998 transitions. Word has length 795 [2018-09-14 17:39:53,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:39:53,524 INFO L480 AbstractCegarLoop]: Abstraction has 22004 states and 23998 transitions. [2018-09-14 17:39:53,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-14 17:39:53,524 INFO L276 IsEmpty]: Start isEmpty. Operand 22004 states and 23998 transitions. [2018-09-14 17:39:53,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 851 [2018-09-14 17:39:53,532 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:39:53,532 INFO L376 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 3, 3, 3, 3, 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] [2018-09-14 17:39:53,533 INFO L423 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:39:53,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1841135617, now seen corresponding path program 1 times [2018-09-14 17:39:53,533 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:39:53,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:53,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:53,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:53,534 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:39:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:54,283 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-14 17:39:54,945 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-14 17:39:55,350 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-14 17:39:55,781 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-14 17:39:57,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2357 backedges. 671 proven. 1346 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2018-09-14 17:39:57,656 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:39:57,657 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:39:57,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:57,666 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:39:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:57,867 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:40:00,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2357 backedges. 939 proven. 50 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2018-09-14 17:40:00,495 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:40:01,286 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-09-14 17:40:02,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2357 backedges. 987 proven. 2 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2018-09-14 17:40:02,262 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:40:02,262 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 23 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 23 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:40:02,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:40:02,280 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:40:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:40:02,743 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:40:05,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2357 backedges. 939 proven. 50 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2018-09-14 17:40:05,308 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:40:05,786 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-09-14 17:40:06,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2357 backedges. 987 proven. 2 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2018-09-14 17:40:06,728 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:40:06,729 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 6, 6, 6, 6] total 28 [2018-09-14 17:40:06,729 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:40:06,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-09-14 17:40:06,731 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-09-14 17:40:06,731 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=639, Unknown=1, NotChecked=0, Total=756 [2018-09-14 17:40:06,731 INFO L87 Difference]: Start difference. First operand 22004 states and 23998 transitions. Second operand 25 states. [2018-09-14 17:40:07,717 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 35 [2018-09-14 17:40:10,807 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2018-09-14 17:40:12,874 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2018-09-14 17:40:13,378 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2018-09-14 17:40:17,965 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2018-09-14 17:40:32,615 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-09-14 17:40:33,531 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2018-09-14 17:40:36,150 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2018-09-14 17:40:41,193 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2018-09-14 17:40:43,924 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2018-09-14 17:40:48,874 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2018-09-14 17:41:05,102 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 Received shutdown request... [2018-09-14 17:41:11,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-09-14 17:41:11,155 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:41:11,162 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:41:11,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:41:11 BoogieIcfgContainer [2018-09-14 17:41:11,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:41:11,163 INFO L168 Benchmark]: Toolchain (without parser) took 234584.67 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 473.1 MB. Max. memory is 7.1 GB. [2018-09-14 17:41:11,164 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 17:41:11,165 INFO L168 Benchmark]: CACSL2BoogieTranslator took 796.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:41:11,165 INFO L168 Benchmark]: Boogie Procedure Inliner took 147.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-14 17:41:11,166 INFO L168 Benchmark]: Boogie Preprocessor took 274.79 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -857.6 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. [2018-09-14 17:41:11,167 INFO L168 Benchmark]: RCFGBuilder took 4056.82 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 124.3 MB). Peak memory consumption was 124.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:41:11,167 INFO L168 Benchmark]: TraceAbstraction took 229300.06 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 3.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 394.5 MB. Max. memory is 7.1 GB. [2018-09-14 17:41:11,171 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 796.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 147.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 274.79 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -857.6 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4056.82 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 124.3 MB). Peak memory consumption was 124.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229300.06 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 3.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 394.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 160]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 160). Cancelled while BasicCegarLoop was constructing difference of abstraction (22004states) and FLOYD_HOARE automaton (currently 88 states, 25 states before enhancement), while ReachableStatesComputation was computing reachable states (18575 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 229.2s OverallTime, 17 OverallIterations, 8 TraceHistogramMax, 158.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1860 SDtfs, 49966 SDslu, 4913 SDs, 0 SdLazy, 63426 SolverSat, 9028 SolverUnsat, 24 SolverUnknown, 0 SolverNotchecked, 115.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25300 GetRequests, 24623 SyntacticMatches, 54 SemanticMatches, 623 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14388 ImplicationChecksByTransitivity, 49.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22004occurred in iteration=16, 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: 5.4s AutomataMinimizationTime, 16 MinimizatonAttempts, 6979 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 4.9s SatisfiabilityAnalysisTime, 51.6s InterpolantComputationTime, 19378 NumberOfCodeBlocks, 19378 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 31539 ConstructedInterpolants, 431 QuantifiedInterpolants, 96398747 SizeOfPredicates, 63 NumberOfNonLiveVariables, 18407 ConjunctsInSsa, 300 ConjunctsInUnsatCore, 61 InterpolantComputations, 7 PerfectInterpolantSequences, 57110/63880 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/Problem14_label04_true-unreach-call_false-termination.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-41-11-183.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem14_label04_true-unreach-call_false-termination.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-41-11-183.csv Completed graceful shutdown