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/Problem13_label31_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:31:57,406 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:31:57,409 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:31:57,428 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:31:57,429 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:31:57,430 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:31:57,431 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:31:57,433 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:31:57,435 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:31:57,436 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:31:57,436 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:31:57,437 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:31:57,438 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:31:57,439 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:31:57,440 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:31:57,441 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:31:57,442 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:31:57,444 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:31:57,449 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:31:57,451 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:31:57,452 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:31:57,453 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:31:57,458 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:31:57,459 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:31:57,459 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:31:57,460 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:31:57,466 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:31:57,467 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:31:57,468 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:31:57,469 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:31:57,470 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:31:57,471 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:31:57,471 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:31:57,471 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:31:57,472 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:31:57,473 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:31:57,473 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 17:31:57,488 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:31:57,488 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:31:57,489 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:31:57,489 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:31:57,489 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:31:57,489 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:31:57,490 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:31:57,490 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:31:57,490 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:31:57,490 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:31:57,490 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:31:57,491 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:31:57,491 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:31:57,491 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:31:57,492 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:31:57,492 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:31:57,492 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:31:57,492 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:31:57,492 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:31:57,493 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:31:57,493 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:31:57,493 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:31:57,493 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:31:57,494 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:31:57,495 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:31:57,495 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:31:57,495 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:31:57,496 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:31:57,496 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:31:57,496 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:31:57,496 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:31:57,496 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:31:57,496 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:31:57,563 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:31:57,578 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:31:57,585 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:31:57,586 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:31:57,587 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:31:57,588 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label31_true-unreach-call.c [2018-09-14 17:31:57,931 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a70afabba/6ef4385c0506429495d4f289085b0d54/FLAGb3c60ddc9 [2018-09-14 17:31:58,428 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:31:58,429 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label31_true-unreach-call.c [2018-09-14 17:31:58,475 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a70afabba/6ef4385c0506429495d4f289085b0d54/FLAGb3c60ddc9 [2018-09-14 17:31:58,499 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a70afabba/6ef4385c0506429495d4f289085b0d54 [2018-09-14 17:31:58,513 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:31:58,517 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:31:58,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:31:58,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:31:58,526 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:31:58,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:31:58" (1/1) ... [2018-09-14 17:31:58,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f5721ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:31:58, skipping insertion in model container [2018-09-14 17:31:58,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:31:58" (1/1) ... [2018-09-14 17:31:58,543 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:31:59,876 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:31:59,895 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:32:00,752 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:32:01,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:32:01 WrapperNode [2018-09-14 17:32:01,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:32:01,173 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:32:01,173 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:32:01,173 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:32:01,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:32:01" (1/1) ... [2018-09-14 17:32:01,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:32:01" (1/1) ... [2018-09-14 17:32:01,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:32:01,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:32:01,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:32:01,463 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:32:02,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:32:01" (1/1) ... [2018-09-14 17:32:02,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:32:01" (1/1) ... [2018-09-14 17:32:02,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:32:01" (1/1) ... [2018-09-14 17:32:02,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:32:01" (1/1) ... [2018-09-14 17:32:02,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:32:01" (1/1) ... [2018-09-14 17:32:02,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:32:01" (1/1) ... [2018-09-14 17:32:02,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:32:01" (1/1) ... [2018-09-14 17:32:02,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:32:02,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:32:02,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:32:02,818 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:32:02,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:32:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:32:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:32:02,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:32:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 17:32:02,894 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 17:32:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 17:32:02,894 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 17:32:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:32:02,894 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:32:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:32:02,895 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:32:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:32:02,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:32:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:32:02,895 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:32:14,736 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:32:14,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:32:14 BoogieIcfgContainer [2018-09-14 17:32:14,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:32:14,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:32:14,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:32:14,743 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:32:14,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:31:58" (1/3) ... [2018-09-14 17:32:14,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545f8a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:32:14, skipping insertion in model container [2018-09-14 17:32:14,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:32:01" (2/3) ... [2018-09-14 17:32:14,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545f8a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:32:14, skipping insertion in model container [2018-09-14 17:32:14,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:32:14" (3/3) ... [2018-09-14 17:32:14,748 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label31_true-unreach-call.c [2018-09-14 17:32:14,759 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:32:14,770 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:32:14,852 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:32:14,853 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:32:14,853 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:32:14,853 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:32:14,853 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:32:14,854 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:32:14,854 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:32:14,854 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:32:14,854 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:32:14,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-14 17:32:14,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-09-14 17:32:14,926 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:32:14,927 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] [2018-09-14 17:32:14,928 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:32:14,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1693652115, now seen corresponding path program 1 times [2018-09-14 17:32:14,934 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:32:14,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:14,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:32:14,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:14,989 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:32:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:32:15,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:32:15,396 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:32:15,396 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:32:15,396 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:32:15,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:32:15,418 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:32:15,419 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:32:15,421 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-09-14 17:32:25,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:32:25,883 INFO L93 Difference]: Finished difference Result 3093 states and 5715 transitions. [2018-09-14 17:32:25,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:32:25,885 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2018-09-14 17:32:25,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:32:25,926 INFO L225 Difference]: With dead ends: 3093 [2018-09-14 17:32:25,927 INFO L226 Difference]: Without dead ends: 1971 [2018-09-14 17:32:25,941 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:32:25,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2018-09-14 17:32:26,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1957. [2018-09-14 17:32:26,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2018-09-14 17:32:26,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3535 transitions. [2018-09-14 17:32:26,134 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3535 transitions. Word has length 47 [2018-09-14 17:32:26,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:32:26,135 INFO L480 AbstractCegarLoop]: Abstraction has 1957 states and 3535 transitions. [2018-09-14 17:32:26,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:32:26,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3535 transitions. [2018-09-14 17:32:26,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-09-14 17:32:26,145 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:32:26,145 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:32:26,146 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:32:26,146 INFO L82 PathProgramCache]: Analyzing trace with hash 459936076, now seen corresponding path program 1 times [2018-09-14 17:32:26,146 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:32:26,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:26,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:32:26,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:26,148 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:32:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:32:26,535 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:32:26,947 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:32:26,947 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:32:26,947 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:32:26,948 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:32:26,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:32:26,950 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:32:26,950 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:32:26,951 INFO L87 Difference]: Start difference. First operand 1957 states and 3535 transitions. Second operand 6 states. [2018-09-14 17:32:42,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:32:42,618 INFO L93 Difference]: Finished difference Result 5627 states and 10356 transitions. [2018-09-14 17:32:42,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:32:42,618 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-09-14 17:32:42,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:32:42,645 INFO L225 Difference]: With dead ends: 5627 [2018-09-14 17:32:42,645 INFO L226 Difference]: Without dead ends: 3676 [2018-09-14 17:32:42,654 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:32:42,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2018-09-14 17:32:42,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3643. [2018-09-14 17:32:42,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3643 states. [2018-09-14 17:32:42,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 5987 transitions. [2018-09-14 17:32:42,767 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 5987 transitions. Word has length 130 [2018-09-14 17:32:42,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:32:42,768 INFO L480 AbstractCegarLoop]: Abstraction has 3643 states and 5987 transitions. [2018-09-14 17:32:42,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:32:42,768 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 5987 transitions. [2018-09-14 17:32:42,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-14 17:32:42,777 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:32:42,777 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:32:42,778 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:32:42,778 INFO L82 PathProgramCache]: Analyzing trace with hash -923575044, now seen corresponding path program 1 times [2018-09-14 17:32:42,778 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:32:42,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:42,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:32:42,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:42,780 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:32:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:32:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:32:43,195 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:32:43,195 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:32:43,195 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:32:43,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:32:43,196 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:32:43,196 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:32:43,196 INFO L87 Difference]: Start difference. First operand 3643 states and 5987 transitions. Second operand 5 states. [2018-09-14 17:33:00,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:33:00,162 INFO L93 Difference]: Finished difference Result 10957 states and 18516 transitions. [2018-09-14 17:33:00,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:33:00,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2018-09-14 17:33:00,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:33:00,212 INFO L225 Difference]: With dead ends: 10957 [2018-09-14 17:33:00,213 INFO L226 Difference]: Without dead ends: 7320 [2018-09-14 17:33:00,231 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:33:00,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7320 states. [2018-09-14 17:33:00,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7320 to 7131. [2018-09-14 17:33:00,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7131 states. [2018-09-14 17:33:00,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7131 states to 7131 states and 10923 transitions. [2018-09-14 17:33:00,622 INFO L78 Accepts]: Start accepts. Automaton has 7131 states and 10923 transitions. Word has length 146 [2018-09-14 17:33:00,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:33:00,622 INFO L480 AbstractCegarLoop]: Abstraction has 7131 states and 10923 transitions. [2018-09-14 17:33:00,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:33:00,623 INFO L276 IsEmpty]: Start isEmpty. Operand 7131 states and 10923 transitions. [2018-09-14 17:33:00,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-09-14 17:33:00,627 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:33:00,627 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:33:00,627 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:33:00,628 INFO L82 PathProgramCache]: Analyzing trace with hash -616934008, now seen corresponding path program 1 times [2018-09-14 17:33:00,628 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:33:00,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:00,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:00,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:00,629 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:33:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:00,966 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:33:01,145 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:33:01,146 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:33:01,146 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:33:01,146 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:33:01,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:33:01,147 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:33:01,147 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:33:01,147 INFO L87 Difference]: Start difference. First operand 7131 states and 10923 transitions. Second operand 6 states. [2018-09-14 17:33:13,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:33:13,698 INFO L93 Difference]: Finished difference Result 19766 states and 31245 transitions. [2018-09-14 17:33:13,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:33:13,707 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2018-09-14 17:33:13,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:33:13,766 INFO L225 Difference]: With dead ends: 19766 [2018-09-14 17:33:13,766 INFO L226 Difference]: Without dead ends: 12641 [2018-09-14 17:33:13,808 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:33:13,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12641 states. [2018-09-14 17:33:14,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12641 to 12439. [2018-09-14 17:33:14,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12439 states. [2018-09-14 17:33:14,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12439 states to 12439 states and 18019 transitions. [2018-09-14 17:33:14,138 INFO L78 Accepts]: Start accepts. Automaton has 12439 states and 18019 transitions. Word has length 183 [2018-09-14 17:33:14,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:33:14,139 INFO L480 AbstractCegarLoop]: Abstraction has 12439 states and 18019 transitions. [2018-09-14 17:33:14,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:33:14,139 INFO L276 IsEmpty]: Start isEmpty. Operand 12439 states and 18019 transitions. [2018-09-14 17:33:14,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-09-14 17:33:14,146 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:33:14,146 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:33:14,146 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:33:14,147 INFO L82 PathProgramCache]: Analyzing trace with hash -566668791, now seen corresponding path program 1 times [2018-09-14 17:33:14,147 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:33:14,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:14,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:14,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:14,151 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:33:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:14,606 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:33:14,607 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:33:14,607 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:33:14,607 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:33:14,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:33:14,608 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:33:14,608 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:33:14,608 INFO L87 Difference]: Start difference. First operand 12439 states and 18019 transitions. Second operand 6 states. [2018-09-14 17:33:35,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:33:35,586 INFO L93 Difference]: Finished difference Result 42949 states and 69054 transitions. [2018-09-14 17:33:35,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-14 17:33:35,589 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 205 [2018-09-14 17:33:35,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:33:35,741 INFO L225 Difference]: With dead ends: 42949 [2018-09-14 17:33:35,742 INFO L226 Difference]: Without dead ends: 30516 [2018-09-14 17:33:35,812 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:33:35,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30516 states. [2018-09-14 17:33:36,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30516 to 30278. [2018-09-14 17:33:36,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30278 states. [2018-09-14 17:33:36,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30278 states to 30278 states and 43651 transitions. [2018-09-14 17:33:36,632 INFO L78 Accepts]: Start accepts. Automaton has 30278 states and 43651 transitions. Word has length 205 [2018-09-14 17:33:36,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:33:36,633 INFO L480 AbstractCegarLoop]: Abstraction has 30278 states and 43651 transitions. [2018-09-14 17:33:36,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:33:36,634 INFO L276 IsEmpty]: Start isEmpty. Operand 30278 states and 43651 transitions. [2018-09-14 17:33:36,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-09-14 17:33:36,651 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:33:36,652 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:33:36,652 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:33:36,652 INFO L82 PathProgramCache]: Analyzing trace with hash -620261943, now seen corresponding path program 1 times [2018-09-14 17:33:36,653 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:33:36,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:36,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:36,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:36,654 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:33:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:37,205 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:33:37,205 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:33:37,207 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:33:37,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:37,228 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:33:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:37,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:33:37,632 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-09-14 17:33:37,633 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:33:38,141 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 80 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-09-14 17:33:38,170 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:33:38,171 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 8 [2018-09-14 17:33:38,171 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:33:38,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:33:38,172 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:33:38,172 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:33:38,172 INFO L87 Difference]: Start difference. First operand 30278 states and 43651 transitions. Second operand 3 states. [2018-09-14 17:33:49,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:33:49,393 INFO L93 Difference]: Finished difference Result 64609 states and 97159 transitions. [2018-09-14 17:33:49,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:33:49,395 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 251 [2018-09-14 17:33:49,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:33:49,599 INFO L225 Difference]: With dead ends: 64609 [2018-09-14 17:33:49,600 INFO L226 Difference]: Without dead ends: 40053 [2018-09-14 17:33:49,678 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:33:49,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40053 states. [2018-09-14 17:33:50,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40053 to 40053. [2018-09-14 17:33:50,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40053 states. [2018-09-14 17:33:50,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40053 states to 40053 states and 56850 transitions. [2018-09-14 17:33:50,632 INFO L78 Accepts]: Start accepts. Automaton has 40053 states and 56850 transitions. Word has length 251 [2018-09-14 17:33:50,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:33:50,633 INFO L480 AbstractCegarLoop]: Abstraction has 40053 states and 56850 transitions. [2018-09-14 17:33:50,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:33:50,633 INFO L276 IsEmpty]: Start isEmpty. Operand 40053 states and 56850 transitions. [2018-09-14 17:33:50,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-09-14 17:33:50,646 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:33:50,646 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:33:50,646 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:33:50,647 INFO L82 PathProgramCache]: Analyzing trace with hash -835857679, now seen corresponding path program 1 times [2018-09-14 17:33:50,647 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:33:50,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:50,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:50,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:50,649 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:33:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:51,043 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 80 proven. 94 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:33:51,043 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:33:51,043 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:33:51,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:51,066 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:33:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:51,165 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:33:51,633 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-09-14 17:33:51,633 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:33:51,933 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 17:33:53,118 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 80 proven. 94 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:33:53,138 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:33:53,138 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2018-09-14 17:33:53,138 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:33:53,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:33:53,139 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:33:53,139 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:33:53,140 INFO L87 Difference]: Start difference. First operand 40053 states and 56850 transitions. Second operand 5 states. [2018-09-14 17:34:10,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:34:10,799 INFO L93 Difference]: Finished difference Result 97021 states and 148149 transitions. [2018-09-14 17:34:10,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:34:10,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 252 [2018-09-14 17:34:10,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:34:11,046 INFO L225 Difference]: With dead ends: 97021 [2018-09-14 17:34:11,046 INFO L226 Difference]: Without dead ends: 56974 [2018-09-14 17:34:11,167 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 499 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:34:11,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56974 states. [2018-09-14 17:34:12,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56974 to 56563. [2018-09-14 17:34:12,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56563 states. [2018-09-14 17:34:12,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56563 states to 56563 states and 82342 transitions. [2018-09-14 17:34:12,870 INFO L78 Accepts]: Start accepts. Automaton has 56563 states and 82342 transitions. Word has length 252 [2018-09-14 17:34:12,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:34:12,871 INFO L480 AbstractCegarLoop]: Abstraction has 56563 states and 82342 transitions. [2018-09-14 17:34:12,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:34:12,871 INFO L276 IsEmpty]: Start isEmpty. Operand 56563 states and 82342 transitions. [2018-09-14 17:34:12,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-09-14 17:34:12,882 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:34:12,883 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:34:12,883 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:34:12,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1920075969, now seen corresponding path program 1 times [2018-09-14 17:34:12,883 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:34:12,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:34:12,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:34:12,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:34:12,884 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:34:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:34:13,728 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 157 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:34:13,728 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:34:13,728 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:34:13,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:34:13,736 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:34:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:34:13,822 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:34:14,058 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:34:14,058 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:34:14,233 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:34:14,254 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 17:34:14,254 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2018-09-14 17:34:14,254 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:34:14,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:34:14,255 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:34:14,255 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:34:14,255 INFO L87 Difference]: Start difference. First operand 56563 states and 82342 transitions. Second operand 3 states. [2018-09-14 17:34:21,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:34:21,510 INFO L93 Difference]: Finished difference Result 122019 states and 179001 transitions. [2018-09-14 17:34:21,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:34:21,510 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 258 [2018-09-14 17:34:21,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:34:21,725 INFO L225 Difference]: With dead ends: 122019 [2018-09-14 17:34:21,725 INFO L226 Difference]: Without dead ends: 65462 [2018-09-14 17:34:21,858 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 515 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:34:21,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65462 states. [2018-09-14 17:34:22,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65462 to 62218. [2018-09-14 17:34:22,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62218 states. [2018-09-14 17:34:22,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62218 states to 62218 states and 84023 transitions. [2018-09-14 17:34:22,993 INFO L78 Accepts]: Start accepts. Automaton has 62218 states and 84023 transitions. Word has length 258 [2018-09-14 17:34:22,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:34:22,994 INFO L480 AbstractCegarLoop]: Abstraction has 62218 states and 84023 transitions. [2018-09-14 17:34:22,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:34:22,994 INFO L276 IsEmpty]: Start isEmpty. Operand 62218 states and 84023 transitions. [2018-09-14 17:34:23,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-09-14 17:34:23,015 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:34:23,015 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:34:23,016 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:34:23,016 INFO L82 PathProgramCache]: Analyzing trace with hash 470504346, now seen corresponding path program 1 times [2018-09-14 17:34:23,016 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:34:23,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:34:23,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:34:23,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:34:23,017 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:34:23,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:34:23,627 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 202 proven. 78 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-09-14 17:34:23,627 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:34:23,627 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:34:23,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:34:23,643 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:34:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:34:23,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:34:23,952 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-09-14 17:34:23,953 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:34:24,131 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 202 proven. 78 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-09-14 17:34:24,152 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:34:24,152 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:34:24,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:34:24,171 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:34:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:34:24,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:34:24,491 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-09-14 17:34:24,492 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:34:25,115 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 202 proven. 78 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-09-14 17:34:25,117 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:34:25,117 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 17:34:25,117 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:34:25,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:34:25,119 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:34:25,119 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:34:25,119 INFO L87 Difference]: Start difference. First operand 62218 states and 84023 transitions. Second operand 9 states. [2018-09-14 17:34:43,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:34:43,101 INFO L93 Difference]: Finished difference Result 149124 states and 236362 transitions. [2018-09-14 17:34:43,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-14 17:34:43,101 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 330 [2018-09-14 17:34:43,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:34:43,502 INFO L225 Difference]: With dead ends: 149124 [2018-09-14 17:34:43,502 INFO L226 Difference]: Without dead ends: 86912 [2018-09-14 17:34:43,690 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1342 GetRequests, 1318 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-09-14 17:34:43,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86912 states. [2018-09-14 17:34:45,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86912 to 86493. [2018-09-14 17:34:45,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86493 states. [2018-09-14 17:34:45,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86493 states to 86493 states and 131273 transitions. [2018-09-14 17:34:45,970 INFO L78 Accepts]: Start accepts. Automaton has 86493 states and 131273 transitions. Word has length 330 [2018-09-14 17:34:45,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:34:45,970 INFO L480 AbstractCegarLoop]: Abstraction has 86493 states and 131273 transitions. [2018-09-14 17:34:45,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:34:45,971 INFO L276 IsEmpty]: Start isEmpty. Operand 86493 states and 131273 transitions. [2018-09-14 17:34:45,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-09-14 17:34:45,996 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:34:45,997 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:34:45,997 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:34:45,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1988929760, now seen corresponding path program 1 times [2018-09-14 17:34:45,997 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:34:45,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:34:45,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:34:45,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:34:45,999 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:34:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:34:46,567 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 283 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:34:46,567 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:34:46,567 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:34:46,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:34:46,577 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:34:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:34:46,691 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:34:46,807 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 283 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:34:46,807 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:34:47,515 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 283 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:34:47,536 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:34:47,536 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 8 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:34:47,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:34:47,553 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:34:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:34:47,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:34:48,023 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 283 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:34:48,024 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:34:48,222 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 283 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:34:48,224 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:34:48,225 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-14 17:34:48,225 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:34:48,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:34:48,227 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:34:48,227 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-14 17:34:48,227 INFO L87 Difference]: Start difference. First operand 86493 states and 131273 transitions. Second operand 9 states. [2018-09-14 17:35:16,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:35:16,789 INFO L93 Difference]: Finished difference Result 273940 states and 477282 transitions. [2018-09-14 17:35:16,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-14 17:35:16,790 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 341 [2018-09-14 17:35:16,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:35:17,462 INFO L225 Difference]: With dead ends: 273940 [2018-09-14 17:35:17,462 INFO L226 Difference]: Without dead ends: 186362 [2018-09-14 17:35:17,786 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1426 GetRequests, 1382 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=380, Invalid=1512, Unknown=0, NotChecked=0, Total=1892 [2018-09-14 17:35:17,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186362 states. [2018-09-14 17:35:21,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186362 to 184483. [2018-09-14 17:35:21,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184483 states. [2018-09-14 17:35:21,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184483 states to 184483 states and 234423 transitions. [2018-09-14 17:35:21,969 INFO L78 Accepts]: Start accepts. Automaton has 184483 states and 234423 transitions. Word has length 341 [2018-09-14 17:35:21,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:35:21,970 INFO L480 AbstractCegarLoop]: Abstraction has 184483 states and 234423 transitions. [2018-09-14 17:35:21,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:35:21,970 INFO L276 IsEmpty]: Start isEmpty. Operand 184483 states and 234423 transitions. [2018-09-14 17:35:22,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-09-14 17:35:22,012 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:35:22,013 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:35:22,013 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:35:22,013 INFO L82 PathProgramCache]: Analyzing trace with hash 619095938, now seen corresponding path program 1 times [2018-09-14 17:35:22,013 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:35:22,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:35:22,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:35:22,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:35:22,014 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:35:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:35:22,460 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:35:22,460 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:35:22,460 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:35:22,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:35:22,470 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:35:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:35:22,599 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:35:22,733 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:35:22,733 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:35:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:35:23,023 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:35:23,024 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:35:23,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:35:23,040 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:35:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:35:23,319 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:35:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:35:24,565 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:35:24,893 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:35:24,895 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:35:24,896 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 17:35:24,896 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:35:24,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:35:24,897 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:35:24,897 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:35:24,897 INFO L87 Difference]: Start difference. First operand 184483 states and 234423 transitions. Second operand 9 states. [2018-09-14 17:35:38,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:35:38,993 INFO L93 Difference]: Finished difference Result 344933 states and 458172 transitions. [2018-09-14 17:35:38,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 17:35:38,994 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 404 [2018-09-14 17:35:38,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:35:39,687 INFO L225 Difference]: With dead ends: 344933 [2018-09-14 17:35:39,687 INFO L226 Difference]: Without dead ends: 172115 [2018-09-14 17:35:39,995 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1629 GetRequests, 1609 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2018-09-14 17:35:40,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172115 states. [2018-09-14 17:35:43,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172115 to 171224. [2018-09-14 17:35:43,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171224 states. [2018-09-14 17:35:44,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171224 states to 171224 states and 204223 transitions. [2018-09-14 17:35:44,058 INFO L78 Accepts]: Start accepts. Automaton has 171224 states and 204223 transitions. Word has length 404 [2018-09-14 17:35:44,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:35:44,059 INFO L480 AbstractCegarLoop]: Abstraction has 171224 states and 204223 transitions. [2018-09-14 17:35:44,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:35:44,059 INFO L276 IsEmpty]: Start isEmpty. Operand 171224 states and 204223 transitions. [2018-09-14 17:35:44,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-09-14 17:35:44,094 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:35:44,094 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:35:44,095 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:35:44,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1256634010, now seen corresponding path program 1 times [2018-09-14 17:35:44,095 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:35:44,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:35:44,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:35:44,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:35:44,096 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:35:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-09-14 17:35:45,963 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 293 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-09-14 17:35:45,964 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:35:45,964 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:35:45,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:35:45,972 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:35:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:35:46,095 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:35:46,121 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-14 17:35:46,322 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:35:46,323 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:35:46,328 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:35:46,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:35:46 BoogieIcfgContainer [2018-09-14 17:35:46,329 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:35:46,330 INFO L168 Benchmark]: Toolchain (without parser) took 227816.03 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 158.8 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-09-14 17:35:46,331 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 17:35:46,331 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2654.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:35:46,332 INFO L168 Benchmark]: Boogie Procedure Inliner took 288.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.0 GB in the beginning and 982.4 MB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-09-14 17:35:46,333 INFO L168 Benchmark]: Boogie Preprocessor took 1354.56 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 975.2 MB). Free memory was 982.4 MB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:35:46,336 INFO L168 Benchmark]: RCFGBuilder took 11919.83 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 195.0 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -65.8 MB). Peak memory consumption was 782.1 MB. Max. memory is 7.1 GB. [2018-09-14 17:35:46,337 INFO L168 Benchmark]: TraceAbstraction took 211590.81 ms. Allocated memory was 2.7 GB in the beginning and 3.3 GB in the end (delta: 629.1 MB). Free memory was 2.4 GB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-09-14 17:35:46,347 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2654.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 288.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.0 GB in the beginning and 982.4 MB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1354.56 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 975.2 MB). Free memory was 982.4 MB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11919.83 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 195.0 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -65.8 MB). Peak memory consumption was 782.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211590.81 ms. Allocated memory was 2.7 GB in the beginning and 3.3 GB in the end (delta: 629.1 MB). Free memory was 2.4 GB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 132). Cancelled while BasicCegarLoop was analyzing trace of length 427 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 211.4s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 177.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7426 SDtfs, 47199 SDslu, 6180 SDs, 0 SdLazy, 74147 SolverSat, 19434 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 143.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5989 GetRequests, 5837 SyntacticMatches, 21 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184483occurred in iteration=10, 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: 16.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 7520 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 5458 NumberOfCodeBlocks, 5458 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 8340 ConstructedInterpolants, 0 QuantifiedInterpolants, 7368963 SizeOfPredicates, 16 NumberOfNonLiveVariables, 5038 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 29 InterpolantComputations, 9 PerfectInterpolantSequences, 5877/6340 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/Problem13_label31_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-35-46-370.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label31_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-35-46-370.csv Completed graceful shutdown