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/Problem15_label36_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:58:11,620 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:58:11,623 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:58:11,642 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:58:11,642 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:58:11,643 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:58:11,646 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:58:11,648 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:58:11,650 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:58:11,651 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:58:11,661 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:58:11,661 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:58:11,662 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:58:11,663 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:58:11,665 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:58:11,666 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:58:11,667 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:58:11,669 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:58:11,675 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:58:11,680 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:58:11,681 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:58:11,682 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:58:11,687 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 11:58:11,687 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 11:58:11,688 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 11:58:11,694 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 11:58:11,695 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 11:58:11,696 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 11:58:11,697 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 11:58:11,698 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 11:58:11,698 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 11:58:11,699 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 11:58:11,701 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:58:11,701 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:58:11,704 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:58:11,705 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:58:11,705 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 11:58:11,725 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:58:11,725 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:58:11,726 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:58:11,726 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:58:11,726 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:58:11,726 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:58:11,727 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:58:11,727 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:58:11,727 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:58:11,727 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:58:11,727 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:58:11,728 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:58:11,728 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:58:11,729 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:58:11,729 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:58:11,729 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:58:11,729 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:58:11,730 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:58:11,730 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:58:11,730 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:58:11,730 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:58:11,730 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:58:11,731 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:58:11,731 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:58:11,731 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:58:11,731 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:58:11,732 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:58:11,732 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:58:11,732 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:58:11,732 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:58:11,732 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:58:11,733 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:58:11,733 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:58:11,733 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:58:11,805 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:58:11,821 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:58:11,829 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:58:11,831 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:58:11,831 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:58:11,832 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label36_true-unreach-call.c [2018-09-18 11:58:12,184 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/290be713c/c7af2ec983da49d88238888d4939013e/FLAG48c06cf5e [2018-09-18 11:58:12,598 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:58:12,599 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label36_true-unreach-call.c [2018-09-18 11:58:12,624 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/290be713c/c7af2ec983da49d88238888d4939013e/FLAG48c06cf5e [2018-09-18 11:58:12,647 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/290be713c/c7af2ec983da49d88238888d4939013e [2018-09-18 11:58:12,660 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:58:12,664 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:58:12,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:58:12,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:58:12,674 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:58:12,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:58:12" (1/1) ... [2018-09-18 11:58:12,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@201dfe03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:58:12, skipping insertion in model container [2018-09-18 11:58:12,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:58:12" (1/1) ... [2018-09-18 11:58:12,695 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:58:13,544 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:58:13,565 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:58:13,897 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:58:14,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:58:14 WrapperNode [2018-09-18 11:58:14,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:58:14,048 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:58:14,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:58:14,048 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:58:14,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:58:14" (1/1) ... [2018-09-18 11:58:14,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:58:14" (1/1) ... [2018-09-18 11:58:14,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:58:14,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:58:14,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:58:14,309 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:58:14,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:58:14" (1/1) ... [2018-09-18 11:58:14,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:58:14" (1/1) ... [2018-09-18 11:58:14,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:58:14" (1/1) ... [2018-09-18 11:58:14,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:58:14" (1/1) ... [2018-09-18 11:58:14,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:58:14" (1/1) ... [2018-09-18 11:58:14,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:58:14" (1/1) ... [2018-09-18 11:58:14,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:58:14" (1/1) ... [2018-09-18 11:58:15,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:58:15,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:58:15,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:58:15,017 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:58:15,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:58:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:58:15,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:58:15,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:58:15,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 11:58:15,101 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 11:58:15,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:58:15,101 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:58:15,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:58:15,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:58:15,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:58:15,102 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:58:21,779 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:58:21,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:58:21 BoogieIcfgContainer [2018-09-18 11:58:21,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:58:21,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:58:21,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:58:21,787 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:58:21,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:58:12" (1/3) ... [2018-09-18 11:58:21,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7768e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:58:21, skipping insertion in model container [2018-09-18 11:58:21,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:58:14" (2/3) ... [2018-09-18 11:58:21,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7768e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:58:21, skipping insertion in model container [2018-09-18 11:58:21,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:58:21" (3/3) ... [2018-09-18 11:58:21,792 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label36_true-unreach-call.c [2018-09-18 11:58:21,802 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:58:21,813 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:58:21,871 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:58:21,872 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:58:21,872 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:58:21,872 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:58:21,872 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:58:21,872 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:58:21,873 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:58:21,873 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:58:21,873 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:58:21,906 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-09-18 11:58:21,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-18 11:58:21,920 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:58:21,921 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:58:21,922 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:58:21,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1645176452, now seen corresponding path program 1 times [2018-09-18 11:58:21,929 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:58:21,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:58:21,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:58:21,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:58:21,974 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:58:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:58:22,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:58:22,529 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:58:22,529 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:58:22,529 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:58:22,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:58:22,552 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:58:22,553 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:58:22,556 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-09-18 11:58:32,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:58:32,155 INFO L93 Difference]: Finished difference Result 1510 states and 2773 transitions. [2018-09-18 11:58:32,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:58:32,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2018-09-18 11:58:32,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:58:32,183 INFO L225 Difference]: With dead ends: 1510 [2018-09-18 11:58:32,183 INFO L226 Difference]: Without dead ends: 1066 [2018-09-18 11:58:32,192 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:58:32,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2018-09-18 11:58:32,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1064. [2018-09-18 11:58:32,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2018-09-18 11:58:32,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1590 transitions. [2018-09-18 11:58:32,308 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1590 transitions. Word has length 68 [2018-09-18 11:58:32,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:58:32,308 INFO L480 AbstractCegarLoop]: Abstraction has 1064 states and 1590 transitions. [2018-09-18 11:58:32,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:58:32,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1590 transitions. [2018-09-18 11:58:32,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-18 11:58:32,323 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:58:32,324 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:58:32,324 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:58:32,324 INFO L82 PathProgramCache]: Analyzing trace with hash 880545895, now seen corresponding path program 1 times [2018-09-18 11:58:32,324 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:58:32,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:58:32,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:58:32,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:58:32,327 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:58:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:58:32,632 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:58:32,632 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:58:32,632 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:58:32,633 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:58:32,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:58:32,635 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:58:32,635 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:58:32,635 INFO L87 Difference]: Start difference. First operand 1064 states and 1590 transitions. Second operand 4 states. [2018-09-18 11:58:41,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:58:41,110 INFO L93 Difference]: Finished difference Result 3981 states and 6113 transitions. [2018-09-18 11:58:41,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:58:41,113 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2018-09-18 11:58:41,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:58:41,137 INFO L225 Difference]: With dead ends: 3981 [2018-09-18 11:58:41,137 INFO L226 Difference]: Without dead ends: 2923 [2018-09-18 11:58:41,146 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:58:41,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2018-09-18 11:58:41,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 2921. [2018-09-18 11:58:41,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2921 states. [2018-09-18 11:58:41,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2921 states to 2921 states and 4008 transitions. [2018-09-18 11:58:41,247 INFO L78 Accepts]: Start accepts. Automaton has 2921 states and 4008 transitions. Word has length 138 [2018-09-18 11:58:41,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:58:41,248 INFO L480 AbstractCegarLoop]: Abstraction has 2921 states and 4008 transitions. [2018-09-18 11:58:41,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:58:41,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2921 states and 4008 transitions. [2018-09-18 11:58:41,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-09-18 11:58:41,264 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:58:41,264 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-18 11:58:41,266 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:58:41,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1873397843, now seen corresponding path program 1 times [2018-09-18 11:58:41,266 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:58:41,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:58:41,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:58:41,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:58:41,268 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:58:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:58:41,641 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 123 proven. 77 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-18 11:58:41,641 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:58:41,641 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:58:41,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:58:41,652 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:58:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:58:41,762 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:58:41,990 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-18 11:58:41,990 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:58:42,155 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-18 11:58:43,051 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-18 11:58:43,084 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:58:43,084 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-09-18 11:58:43,084 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:58:43,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:58:43,085 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:58:43,089 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:58:43,089 INFO L87 Difference]: Start difference. First operand 2921 states and 4008 transitions. Second operand 5 states. [2018-09-18 11:58:49,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:58:49,274 INFO L93 Difference]: Finished difference Result 8359 states and 11682 transitions. [2018-09-18 11:58:49,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:58:49,274 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 248 [2018-09-18 11:58:49,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:58:49,313 INFO L225 Difference]: With dead ends: 8359 [2018-09-18 11:58:49,313 INFO L226 Difference]: Without dead ends: 5444 [2018-09-18 11:58:49,330 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 494 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-09-18 11:58:49,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5444 states. [2018-09-18 11:58:49,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5444 to 5444. [2018-09-18 11:58:49,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5444 states. [2018-09-18 11:58:49,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5444 states to 5444 states and 7074 transitions. [2018-09-18 11:58:49,508 INFO L78 Accepts]: Start accepts. Automaton has 5444 states and 7074 transitions. Word has length 248 [2018-09-18 11:58:49,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:58:49,508 INFO L480 AbstractCegarLoop]: Abstraction has 5444 states and 7074 transitions. [2018-09-18 11:58:49,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:58:49,509 INFO L276 IsEmpty]: Start isEmpty. Operand 5444 states and 7074 transitions. [2018-09-18 11:58:49,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2018-09-18 11:58:49,523 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:58:49,523 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:58:49,524 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:58:49,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1664555151, now seen corresponding path program 1 times [2018-09-18 11:58:49,524 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:58:49,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:58:49,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:58:49,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:58:49,526 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:58:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:58:50,356 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 348 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-18 11:58:50,356 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:58:50,357 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:58:50,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:58:50,374 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:58:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:58:50,512 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:58:51,223 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 348 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-18 11:58:51,224 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:58:52,172 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 348 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-18 11:58:52,195 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:58:52,195 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:58:52,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:58:52,222 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:58:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:58:52,527 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:58:52,751 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 348 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-18 11:58:52,752 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:58:53,204 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 348 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-18 11:58:53,206 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:58:53,207 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 11:58:53,207 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:58:53,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:58:53,209 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:58:53,209 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:58:53,209 INFO L87 Difference]: Start difference. First operand 5444 states and 7074 transitions. Second operand 9 states. [2018-09-18 11:59:04,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:59:04,662 INFO L93 Difference]: Finished difference Result 16612 states and 23512 transitions. [2018-09-18 11:59:04,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-18 11:59:04,664 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 433 [2018-09-18 11:59:04,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:59:04,768 INFO L225 Difference]: With dead ends: 16612 [2018-09-18 11:59:04,768 INFO L226 Difference]: Without dead ends: 11174 [2018-09-18 11:59:04,857 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1766 GetRequests, 1736 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=218, Invalid=484, Unknown=0, NotChecked=0, Total=702 [2018-09-18 11:59:04,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11174 states. [2018-09-18 11:59:05,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11174 to 10455. [2018-09-18 11:59:05,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10455 states. [2018-09-18 11:59:05,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10455 states to 10455 states and 13266 transitions. [2018-09-18 11:59:05,215 INFO L78 Accepts]: Start accepts. Automaton has 10455 states and 13266 transitions. Word has length 433 [2018-09-18 11:59:05,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:59:05,216 INFO L480 AbstractCegarLoop]: Abstraction has 10455 states and 13266 transitions. [2018-09-18 11:59:05,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:59:05,218 INFO L276 IsEmpty]: Start isEmpty. Operand 10455 states and 13266 transitions. [2018-09-18 11:59:05,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2018-09-18 11:59:05,251 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:59:05,251 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:59:05,252 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:59:05,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1214121189, now seen corresponding path program 1 times [2018-09-18 11:59:05,252 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:59:05,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:05,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:05,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:05,253 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:59:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:05,964 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 271 proven. 82 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-18 11:59:05,964 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:59:05,964 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:59:05,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:05,974 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:59:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:06,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:59:06,231 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 3 [2018-09-18 11:59:06,299 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-09-18 11:59:06,300 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:59:06,420 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2018-09-18 11:59:06,441 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:59:06,441 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 7 [2018-09-18 11:59:06,441 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:59:06,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:59:06,442 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:59:06,442 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-09-18 11:59:06,442 INFO L87 Difference]: Start difference. First operand 10455 states and 13266 transitions. Second operand 3 states. [2018-09-18 11:59:11,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:59:11,286 INFO L93 Difference]: Finished difference Result 28119 states and 37832 transitions. [2018-09-18 11:59:11,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:59:11,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 439 [2018-09-18 11:59:11,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:59:11,412 INFO L225 Difference]: With dead ends: 28119 [2018-09-18 11:59:11,412 INFO L226 Difference]: Without dead ends: 17730 [2018-09-18 11:59:11,506 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 883 GetRequests, 878 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-09-18 11:59:11,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17730 states. [2018-09-18 11:59:11,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17730 to 17405. [2018-09-18 11:59:11,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17405 states. [2018-09-18 11:59:12,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17405 states to 17405 states and 22758 transitions. [2018-09-18 11:59:12,294 INFO L78 Accepts]: Start accepts. Automaton has 17405 states and 22758 transitions. Word has length 439 [2018-09-18 11:59:12,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:59:12,295 INFO L480 AbstractCegarLoop]: Abstraction has 17405 states and 22758 transitions. [2018-09-18 11:59:12,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:59:12,295 INFO L276 IsEmpty]: Start isEmpty. Operand 17405 states and 22758 transitions. [2018-09-18 11:59:12,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2018-09-18 11:59:12,339 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:59:12,340 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:59:12,340 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:59:12,341 INFO L82 PathProgramCache]: Analyzing trace with hash -2137288615, now seen corresponding path program 1 times [2018-09-18 11:59:12,341 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:59:12,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:12,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:12,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:12,342 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:59:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 271 proven. 82 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-18 11:59:13,018 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:59:13,018 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 [2018-09-18 11:59:13,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:13,027 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:59:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:13,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:59:13,302 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 370 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-18 11:59:13,302 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:59:13,528 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 271 proven. 82 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-18 11:59:13,548 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:59:13,548 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 [2018-09-18 11:59:13,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:13,565 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:59:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:13,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:59:14,041 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 370 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-18 11:59:14,042 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:59:14,434 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 271 proven. 82 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-18 11:59:14,436 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:59:14,437 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 11:59:14,437 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:59:14,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:59:14,439 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:59:14,439 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:59:14,439 INFO L87 Difference]: Start difference. First operand 17405 states and 22758 transitions. Second operand 9 states. [2018-09-18 11:59:23,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:59:23,473 INFO L93 Difference]: Finished difference Result 38950 states and 52612 transitions. [2018-09-18 11:59:23,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-18 11:59:23,474 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 439 [2018-09-18 11:59:23,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:59:23,590 INFO L225 Difference]: With dead ends: 38950 [2018-09-18 11:59:23,591 INFO L226 Difference]: Without dead ends: 21630 [2018-09-18 11:59:23,731 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1782 GetRequests, 1756 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2018-09-18 11:59:23,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21630 states. [2018-09-18 11:59:24,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21630 to 21444. [2018-09-18 11:59:24,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21444 states. [2018-09-18 11:59:24,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21444 states to 21444 states and 26376 transitions. [2018-09-18 11:59:24,323 INFO L78 Accepts]: Start accepts. Automaton has 21444 states and 26376 transitions. Word has length 439 [2018-09-18 11:59:24,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:59:24,324 INFO L480 AbstractCegarLoop]: Abstraction has 21444 states and 26376 transitions. [2018-09-18 11:59:24,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:59:24,324 INFO L276 IsEmpty]: Start isEmpty. Operand 21444 states and 26376 transitions. [2018-09-18 11:59:24,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2018-09-18 11:59:24,362 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:59:24,363 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:59:24,363 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:59:24,363 INFO L82 PathProgramCache]: Analyzing trace with hash -453806323, now seen corresponding path program 1 times [2018-09-18 11:59:24,364 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:59:24,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:24,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:24,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:24,365 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:59:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:25,104 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-09-18 11:59:25,104 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:59:25,104 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:59:25,104 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:59:25,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:59:25,105 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:59:25,105 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:59:25,106 INFO L87 Difference]: Start difference. First operand 21444 states and 26376 transitions. Second operand 3 states. [2018-09-18 11:59:30,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:59:30,001 INFO L93 Difference]: Finished difference Result 43116 states and 53377 transitions. [2018-09-18 11:59:30,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:59:30,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 510 [2018-09-18 11:59:30,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:59:30,097 INFO L225 Difference]: With dead ends: 43116 [2018-09-18 11:59:30,097 INFO L226 Difference]: Without dead ends: 21757 [2018-09-18 11:59:30,178 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:59:30,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21757 states. [2018-09-18 11:59:30,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21757 to 21444. [2018-09-18 11:59:30,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21444 states. [2018-09-18 11:59:30,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21444 states to 21444 states and 26377 transitions. [2018-09-18 11:59:30,652 INFO L78 Accepts]: Start accepts. Automaton has 21444 states and 26377 transitions. Word has length 510 [2018-09-18 11:59:30,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:59:30,653 INFO L480 AbstractCegarLoop]: Abstraction has 21444 states and 26377 transitions. [2018-09-18 11:59:30,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:59:30,653 INFO L276 IsEmpty]: Start isEmpty. Operand 21444 states and 26377 transitions. [2018-09-18 11:59:30,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2018-09-18 11:59:30,699 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:59:30,700 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:59:30,700 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:59:30,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1213667337, now seen corresponding path program 1 times [2018-09-18 11:59:30,700 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:59:30,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:30,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:30,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:30,701 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:59:30,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:31,400 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 185 proven. 15 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2018-09-18 11:59:31,400 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:59:31,400 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:59:31,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:31,409 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:59:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:31,561 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:59:32,458 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2018-09-18 11:59:32,459 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:59:33,837 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 183 proven. 199 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-18 11:59:33,858 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:59:33,859 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-09-18 11:59:33,859 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:59:33,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:59:33,860 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:59:33,860 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:59:33,860 INFO L87 Difference]: Start difference. First operand 21444 states and 26377 transitions. Second operand 5 states. [2018-09-18 11:59:46,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:59:46,678 INFO L93 Difference]: Finished difference Result 46621 states and 58281 transitions. [2018-09-18 11:59:46,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:59:46,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 531 [2018-09-18 11:59:46,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:59:46,784 INFO L225 Difference]: With dead ends: 46621 [2018-09-18 11:59:46,784 INFO L226 Difference]: Without dead ends: 25188 [2018-09-18 11:59:46,887 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1074 GetRequests, 1058 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-09-18 11:59:46,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25188 states. [2018-09-18 11:59:47,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25188 to 24562. [2018-09-18 11:59:47,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24562 states. [2018-09-18 11:59:47,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24562 states to 24562 states and 30030 transitions. [2018-09-18 11:59:47,407 INFO L78 Accepts]: Start accepts. Automaton has 24562 states and 30030 transitions. Word has length 531 [2018-09-18 11:59:47,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:59:47,407 INFO L480 AbstractCegarLoop]: Abstraction has 24562 states and 30030 transitions. [2018-09-18 11:59:47,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:59:47,407 INFO L276 IsEmpty]: Start isEmpty. Operand 24562 states and 30030 transitions. [2018-09-18 11:59:47,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2018-09-18 11:59:47,423 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:59:47,424 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:59:47,424 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:59:47,425 INFO L82 PathProgramCache]: Analyzing trace with hash 819371845, now seen corresponding path program 1 times [2018-09-18 11:59:47,425 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:59:47,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:47,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:47,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:47,426 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:59:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:48,183 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 311 proven. 83 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-18 11:59:48,183 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:59:48,183 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:59:48,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:48,194 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:59:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:48,356 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:59:48,537 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 412 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-18 11:59:48,537 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:59:49,177 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 311 proven. 83 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-18 11:59:49,198 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:59:49,198 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:59:49,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:49,217 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:59:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:49,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:59:49,957 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 412 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-18 11:59:49,957 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:59:50,851 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 311 proven. 83 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-18 11:59:50,854 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:59:50,854 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 11:59:50,854 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:59:50,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:59:50,855 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:59:50,855 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:59:50,856 INFO L87 Difference]: Start difference. First operand 24562 states and 30030 transitions. Second operand 9 states. [2018-09-18 12:00:00,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:00:00,078 INFO L93 Difference]: Finished difference Result 50265 states and 62965 transitions. [2018-09-18 12:00:00,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-18 12:00:00,078 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 566 [2018-09-18 12:00:00,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:00:00,193 INFO L225 Difference]: With dead ends: 50265 [2018-09-18 12:00:00,194 INFO L226 Difference]: Without dead ends: 26036 [2018-09-18 12:00:00,313 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2294 GetRequests, 2266 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2018-09-18 12:00:00,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26036 states. [2018-09-18 12:00:01,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26036 to 25496. [2018-09-18 12:00:01,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25496 states. [2018-09-18 12:00:01,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25496 states to 25496 states and 30206 transitions. [2018-09-18 12:00:01,187 INFO L78 Accepts]: Start accepts. Automaton has 25496 states and 30206 transitions. Word has length 566 [2018-09-18 12:00:01,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:00:01,188 INFO L480 AbstractCegarLoop]: Abstraction has 25496 states and 30206 transitions. [2018-09-18 12:00:01,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:00:01,188 INFO L276 IsEmpty]: Start isEmpty. Operand 25496 states and 30206 transitions. [2018-09-18 12:00:01,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2018-09-18 12:00:01,204 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:00:01,205 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:00:01,205 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:00:01,205 INFO L82 PathProgramCache]: Analyzing trace with hash -924143168, now seen corresponding path program 1 times [2018-09-18 12:00:01,205 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:00:01,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:00:01,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:00:01,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:00:01,207 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:00:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:00:02,761 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 348 proven. 371 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-18 12:00:02,761 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:00:02,761 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:00:02,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:00:02,769 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:00:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:00:02,937 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:00:03,919 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 564 proven. 41 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2018-09-18 12:00:03,919 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:00:05,012 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 259 proven. 460 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-18 12:00:05,033 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:00:05,034 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:00:05,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:00:05,051 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:00:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:00:05,483 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:00:06,503 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 514 proven. 41 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2018-09-18 12:00:06,503 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:00:07,700 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 259 proven. 460 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-18 12:00:07,703 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:00:07,704 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9, 8, 9] total 23 [2018-09-18 12:00:07,704 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:00:07,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-18 12:00:07,706 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-18 12:00:07,707 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2018-09-18 12:00:07,707 INFO L87 Difference]: Start difference. First operand 25496 states and 30206 transitions. Second operand 13 states. [2018-09-18 12:00:27,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:00:27,901 INFO L93 Difference]: Finished difference Result 63218 states and 76104 transitions. [2018-09-18 12:00:27,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-18 12:00:27,901 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 627 [2018-09-18 12:00:27,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:00:28,227 INFO L225 Difference]: With dead ends: 63218 [2018-09-18 12:00:28,228 INFO L226 Difference]: Without dead ends: 36456 [2018-09-18 12:00:28,310 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2563 GetRequests, 2517 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=490, Invalid=1580, Unknown=0, NotChecked=0, Total=2070 [2018-09-18 12:00:28,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36456 states. [2018-09-18 12:00:28,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36456 to 35557. [2018-09-18 12:00:28,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35557 states. [2018-09-18 12:00:29,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35557 states to 35557 states and 42215 transitions. [2018-09-18 12:00:29,051 INFO L78 Accepts]: Start accepts. Automaton has 35557 states and 42215 transitions. Word has length 627 [2018-09-18 12:00:29,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:00:29,052 INFO L480 AbstractCegarLoop]: Abstraction has 35557 states and 42215 transitions. [2018-09-18 12:00:29,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-18 12:00:29,052 INFO L276 IsEmpty]: Start isEmpty. Operand 35557 states and 42215 transitions. [2018-09-18 12:00:29,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2018-09-18 12:00:29,078 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:00:29,078 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:00:29,079 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:00:29,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1096908630, now seen corresponding path program 1 times [2018-09-18 12:00:29,082 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:00:29,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:00:29,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:00:29,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:00:29,084 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:00:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:00:29,745 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 253 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2018-09-18 12:00:29,745 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:00:29,746 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 12:00:29,746 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:00:29,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:00:29,747 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:00:29,747 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:00:29,747 INFO L87 Difference]: Start difference. First operand 35557 states and 42215 transitions. Second operand 4 states. [2018-09-18 12:00:36,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:00:36,270 INFO L93 Difference]: Finished difference Result 92244 states and 112119 transitions. [2018-09-18 12:00:36,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 12:00:36,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 630 [2018-09-18 12:00:36,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:00:36,422 INFO L225 Difference]: With dead ends: 92244 [2018-09-18 12:00:36,422 INFO L226 Difference]: Without dead ends: 39069 [2018-09-18 12:00:36,709 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:00:36,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39069 states. [2018-09-18 12:00:37,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39069 to 35203. [2018-09-18 12:00:37,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35203 states. [2018-09-18 12:00:37,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35203 states to 35203 states and 40113 transitions. [2018-09-18 12:00:37,393 INFO L78 Accepts]: Start accepts. Automaton has 35203 states and 40113 transitions. Word has length 630 [2018-09-18 12:00:37,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:00:37,394 INFO L480 AbstractCegarLoop]: Abstraction has 35203 states and 40113 transitions. [2018-09-18 12:00:37,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 12:00:37,394 INFO L276 IsEmpty]: Start isEmpty. Operand 35203 states and 40113 transitions. [2018-09-18 12:00:37,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 680 [2018-09-18 12:00:37,414 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:00:37,415 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:00:37,415 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:00:37,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1824650404, now seen corresponding path program 1 times [2018-09-18 12:00:37,415 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:00:37,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:00:37,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:00:37,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:00:37,417 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:00:37,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:00:38,451 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2018-09-18 12:00:38,451 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:00:38,452 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 12:00:38,452 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:00:38,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:00:38,453 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:00:38,453 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:00:38,453 INFO L87 Difference]: Start difference. First operand 35203 states and 40113 transitions. Second operand 3 states. [2018-09-18 12:00:41,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:00:41,422 INFO L93 Difference]: Finished difference Result 80586 states and 93318 transitions. [2018-09-18 12:00:41,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:00:41,422 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 679 [2018-09-18 12:00:41,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:00:41,574 INFO L225 Difference]: With dead ends: 80586 [2018-09-18 12:00:41,575 INFO L226 Difference]: Without dead ends: 45807 [2018-09-18 12:00:41,714 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:00:41,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45807 states. [2018-09-18 12:00:42,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45807 to 44848. [2018-09-18 12:00:42,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44848 states. [2018-09-18 12:00:42,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44848 states to 44848 states and 50908 transitions. [2018-09-18 12:00:42,564 INFO L78 Accepts]: Start accepts. Automaton has 44848 states and 50908 transitions. Word has length 679 [2018-09-18 12:00:42,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:00:42,565 INFO L480 AbstractCegarLoop]: Abstraction has 44848 states and 50908 transitions. [2018-09-18 12:00:42,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:00:42,565 INFO L276 IsEmpty]: Start isEmpty. Operand 44848 states and 50908 transitions. [2018-09-18 12:00:42,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2018-09-18 12:00:42,595 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:00:42,596 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:00:42,596 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:00:42,597 INFO L82 PathProgramCache]: Analyzing trace with hash -374900017, now seen corresponding path program 1 times [2018-09-18 12:00:42,597 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:00:42,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:00:42,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:00:42,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:00:42,598 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:00:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:00:43,626 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 547 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-18 12:00:43,627 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:00:43,627 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:00:43,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:00:43,634 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:00:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:00:43,822 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:00:58,673 WARN L178 SmtUtils]: Spent 14.71 s on a formula simplification. DAG size of input: 116 DAG size of output: 50 [2018-09-18 12:00:59,270 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 542 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:00:59,271 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:00:59,551 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2018-09-18 12:01:00,292 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 542 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:01:00,313 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:01:00,313 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:01:00,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:01:00,329 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:01:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:01:00,770 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:01:25,193 WARN L178 SmtUtils]: Spent 24.13 s on a formula simplification that was a NOOP. DAG size: 59 [2018-09-18 12:01:33,323 WARN L178 SmtUtils]: Spent 6.05 s on a formula simplification. DAG size of input: 60 DAG size of output: 31 [2018-09-18 12:01:34,194 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 485 proven. 111 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-18 12:01:34,195 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:01:34,593 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2018-09-18 12:01:34,883 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 30 [2018-09-18 12:01:41,374 WARN L178 SmtUtils]: Spent 4.12 s on a formula simplification that was a NOOP. DAG size: 48 [2018-09-18 12:01:41,379 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 12:01:43,485 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-09-18 12:02:09,626 WARN L178 SmtUtils]: Spent 25.17 s on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2018-09-18 12:02:09,632 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 12:02:11,931 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 Received shutdown request... [2018-09-18 12:02:16,000 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-18 12:02:16,202 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:02:16,202 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 12:02:16,208 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 12:02:16,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:02:16 BoogieIcfgContainer [2018-09-18 12:02:16,208 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 12:02:16,209 INFO L168 Benchmark]: Toolchain (without parser) took 243547.92 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 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 911.9 MB. Max. memory is 7.1 GB. [2018-09-18 12:02:16,210 INFO L168 Benchmark]: CDTParser took 0.76 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 12:02:16,210 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1380.75 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: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-09-18 12:02:16,211 INFO L168 Benchmark]: Boogie Procedure Inliner took 260.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. [2018-09-18 12:02:16,212 INFO L168 Benchmark]: Boogie Preprocessor took 707.24 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 878.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 89.5 MB. Max. memory is 7.1 GB. [2018-09-18 12:02:16,213 INFO L168 Benchmark]: RCFGBuilder took 6763.99 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 298.3 MB). Peak memory consumption was 298.3 MB. Max. memory is 7.1 GB. [2018-09-18 12:02:16,214 INFO L168 Benchmark]: TraceAbstraction took 234426.95 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -987.8 MB). Peak memory consumption was 631.2 MB. Max. memory is 7.1 GB. [2018-09-18 12:02:16,225 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1380.75 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: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 260.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 707.24 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 878.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 89.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6763.99 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 298.3 MB). Peak memory consumption was 298.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234426.95 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -987.8 MB). Peak memory consumption was 631.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 190]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 190). Cancelled while BasicCegarLoop was analyzing trace of length 709 with TraceHistMax 4, while TraceCheckSpWp was constructing backward predicates, while PredicateComparison was comparing new predicate (quantified with 1quantifier alternations) to 27 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 234.3s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 108.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3565 SDtfs, 22638 SDslu, 3064 SDs, 0 SdLazy, 36353 SolverSat, 7644 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 90.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10891 GetRequests, 10720 SyntacticMatches, 27 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44848occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 8437 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 18.5s InterpolantComputationTime, 10656 NumberOfCodeBlocks, 10656 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 15970 ConstructedInterpolants, 0 QuantifiedInterpolants, 36210175 SizeOfPredicates, 24 NumberOfNonLiveVariables, 7834 ConjunctsInSsa, 104 ConjunctsInUnsatCore, 34 InterpolantComputations, 8 PerfectInterpolantSequences, 13851/16114 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/Problem15_label36_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_12-02-16-243.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label36_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_12-02-16-243.csv Completed graceful shutdown