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/Problem12_label15_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:20:02,410 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:20:02,412 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:20:02,424 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:20:02,424 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:20:02,425 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:20:02,427 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:20:02,428 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:20:02,430 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:20:02,431 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:20:02,432 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:20:02,432 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:20:02,433 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:20:02,435 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:20:02,436 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:20:02,437 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:20:02,438 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:20:02,439 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:20:02,442 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:20:02,443 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:20:02,445 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:20:02,446 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:20:02,448 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:20:02,449 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:20:02,449 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:20:02,450 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:20:02,451 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:20:02,452 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:20:02,453 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:20:02,458 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:20:02,459 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:20:02,459 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:20:02,460 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:20:02,460 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:20:02,461 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:20:02,462 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:20:02,462 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 17:20:02,492 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:20:02,493 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:20:02,497 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:20:02,497 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:20:02,498 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:20:02,498 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:20:02,498 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:20:02,498 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:20:02,498 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:20:02,499 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:20:02,499 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:20:02,500 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:20:02,500 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:20:02,500 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:20:02,501 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:20:02,501 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:20:02,501 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:20:02,501 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:20:02,501 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:20:02,502 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:20:02,502 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:20:02,502 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:20:02,502 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:20:02,503 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:20:02,503 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:20:02,503 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:20:02,503 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:20:02,503 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:20:02,504 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:20:02,504 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:20:02,504 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:20:02,504 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:20:02,504 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:20:02,581 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:20:02,594 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:20:02,598 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:20:02,600 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:20:02,600 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:20:02,601 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label15_true-unreach-call.c [2018-09-14 17:20:02,962 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9851a1762/42d2564770d04e9e99b2ad1b5ad2118c/FLAGcba387e2c [2018-09-14 17:20:03,421 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:20:03,422 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label15_true-unreach-call.c [2018-09-14 17:20:03,454 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9851a1762/42d2564770d04e9e99b2ad1b5ad2118c/FLAGcba387e2c [2018-09-14 17:20:03,478 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9851a1762/42d2564770d04e9e99b2ad1b5ad2118c [2018-09-14 17:20:03,493 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:20:03,496 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:20:03,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:20:03,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:20:03,508 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:20:03,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:20:03" (1/1) ... [2018-09-14 17:20:03,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a64aa8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:03, skipping insertion in model container [2018-09-14 17:20:03,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:20:03" (1/1) ... [2018-09-14 17:20:03,527 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:20:04,963 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:20:04,983 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:20:05,531 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:20:05,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:05 WrapperNode [2018-09-14 17:20:05,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:20:05,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:20:05,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:20:05,757 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:20:05,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:05" (1/1) ... [2018-09-14 17:20:05,845 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:05" (1/1) ... [2018-09-14 17:20:06,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:20:06,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:20:06,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:20:06,022 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:20:06,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:05" (1/1) ... [2018-09-14 17:20:06,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:05" (1/1) ... [2018-09-14 17:20:06,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:05" (1/1) ... [2018-09-14 17:20:06,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:05" (1/1) ... [2018-09-14 17:20:06,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:05" (1/1) ... [2018-09-14 17:20:06,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:05" (1/1) ... [2018-09-14 17:20:06,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:05" (1/1) ... [2018-09-14 17:20:07,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:20:07,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:20:07,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:20:07,027 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:20:07,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:05" (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 17:20:07,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:20:07,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:20:07,095 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 17:20:07,095 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 17:20:07,095 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 17:20:07,096 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 17:20:07,096 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:20:07,096 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:20:07,096 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:20:07,096 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:20:07,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:20:07,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:20:07,097 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:20:07,097 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:20:17,889 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:20:17,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:20:17 BoogieIcfgContainer [2018-09-14 17:20:17,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:20:17,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:20:17,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:20:17,895 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:20:17,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:20:03" (1/3) ... [2018-09-14 17:20:17,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0d5941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:20:17, skipping insertion in model container [2018-09-14 17:20:17,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:05" (2/3) ... [2018-09-14 17:20:17,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0d5941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:20:17, skipping insertion in model container [2018-09-14 17:20:17,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:20:17" (3/3) ... [2018-09-14 17:20:17,900 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label15_true-unreach-call.c [2018-09-14 17:20:17,911 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:20:17,922 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:20:18,007 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:20:18,008 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:20:18,008 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:20:18,008 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:20:18,008 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:20:18,008 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:20:18,009 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:20:18,009 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:20:18,010 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:20:18,075 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-14 17:20:18,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-09-14 17:20:18,087 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:20:18,088 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:20:18,089 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:20:18,094 INFO L82 PathProgramCache]: Analyzing trace with hash 394736435, now seen corresponding path program 1 times [2018-09-14 17:20:18,096 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:20:18,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:20:18,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:20:18,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:20:18,146 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:20:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:20:18,622 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:20:18,865 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 17:20:18,867 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:20:18,868 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:20:18,868 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:20:18,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:20:18,893 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:20:18,894 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:20:18,897 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-14 17:20:28,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:20:28,278 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-14 17:20:28,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:20:28,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2018-09-14 17:20:28,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:20:28,334 INFO L225 Difference]: With dead ends: 2446 [2018-09-14 17:20:28,334 INFO L226 Difference]: Without dead ends: 1604 [2018-09-14 17:20:28,350 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:20:28,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-14 17:20:28,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-14 17:20:28,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-14 17:20:28,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-09-14 17:20:28,534 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 61 [2018-09-14 17:20:28,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:20:28,534 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-09-14 17:20:28,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:20:28,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-09-14 17:20:28,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-09-14 17:20:28,550 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:20:28,554 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:20:28,554 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:20:28,555 INFO L82 PathProgramCache]: Analyzing trace with hash -2085230804, now seen corresponding path program 1 times [2018-09-14 17:20:28,555 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:20:28,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:20:28,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:20:28,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:20:28,557 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:20:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:20:28,868 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:20:28,908 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:20:28,909 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:20:28,909 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:20:28,909 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:20:28,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:20:28,912 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:20:28,912 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:20:28,912 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-09-14 17:20:39,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:20:39,767 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-09-14 17:20:39,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:20:39,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2018-09-14 17:20:39,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:20:39,795 INFO L225 Difference]: With dead ends: 4818 [2018-09-14 17:20:39,795 INFO L226 Difference]: Without dead ends: 3220 [2018-09-14 17:20:39,801 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:20:39,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-09-14 17:20:39,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-09-14 17:20:39,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-09-14 17:20:39,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-09-14 17:20:39,924 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 135 [2018-09-14 17:20:39,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:20:39,926 INFO L480 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-09-14 17:20:39,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:20:39,926 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-09-14 17:20:39,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-14 17:20:39,932 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:20:39,932 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:20:39,932 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:20:39,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1091528155, now seen corresponding path program 1 times [2018-09-14 17:20:39,933 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:20:39,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:20:39,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:20:39,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:20:39,934 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:20:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:20:40,315 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:20:40,316 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:20:40,316 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:20:40,316 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:20:40,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:20:40,318 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:20:40,318 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:20:40,318 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-09-14 17:20:52,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:20:52,879 INFO L93 Difference]: Finished difference Result 11148 states and 19850 transitions. [2018-09-14 17:20:52,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:20:52,880 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-09-14 17:20:52,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:20:52,928 INFO L225 Difference]: With dead ends: 11148 [2018-09-14 17:20:52,928 INFO L226 Difference]: Without dead ends: 7968 [2018-09-14 17:20:52,944 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 17:20:52,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2018-09-14 17:20:53,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7924. [2018-09-14 17:20:53,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-09-14 17:20:53,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13424 transitions. [2018-09-14 17:20:53,180 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 13424 transitions. Word has length 140 [2018-09-14 17:20:53,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:20:53,180 INFO L480 AbstractCegarLoop]: Abstraction has 7924 states and 13424 transitions. [2018-09-14 17:20:53,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:20:53,180 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 13424 transitions. [2018-09-14 17:20:53,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-14 17:20:53,186 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:20:53,186 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:20:53,186 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:20:53,186 INFO L82 PathProgramCache]: Analyzing trace with hash 266956725, now seen corresponding path program 1 times [2018-09-14 17:20:53,187 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:20:53,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:20:53,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:20:53,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:20:53,189 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:20:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:20:53,427 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:20:53,428 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:20:53,428 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:20:53,428 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:20:53,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:20:53,429 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:20:53,429 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:20:53,429 INFO L87 Difference]: Start difference. First operand 7924 states and 13424 transitions. Second operand 6 states. [2018-09-14 17:21:02,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:21:02,883 INFO L93 Difference]: Finished difference Result 22224 states and 38004 transitions. [2018-09-14 17:21:02,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:21:02,884 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2018-09-14 17:21:02,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:21:02,949 INFO L225 Difference]: With dead ends: 22224 [2018-09-14 17:21:02,950 INFO L226 Difference]: Without dead ends: 14306 [2018-09-14 17:21:02,988 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:21:02,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14306 states. [2018-09-14 17:21:03,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14306 to 14219. [2018-09-14 17:21:03,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14219 states. [2018-09-14 17:21:03,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14219 states to 14219 states and 21550 transitions. [2018-09-14 17:21:03,327 INFO L78 Accepts]: Start accepts. Automaton has 14219 states and 21550 transitions. Word has length 148 [2018-09-14 17:21:03,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:21:03,328 INFO L480 AbstractCegarLoop]: Abstraction has 14219 states and 21550 transitions. [2018-09-14 17:21:03,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:21:03,328 INFO L276 IsEmpty]: Start isEmpty. Operand 14219 states and 21550 transitions. [2018-09-14 17:21:03,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-09-14 17:21:03,340 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:21:03,340 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:21:03,340 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:21:03,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1611009688, now seen corresponding path program 1 times [2018-09-14 17:21:03,341 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:21:03,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:03,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:03,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:03,342 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:21:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:21:03,672 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:21:04,069 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:21:04,070 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:21:04,070 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:21:04,070 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:21:04,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:21:04,071 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:21:04,071 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:21:04,072 INFO L87 Difference]: Start difference. First operand 14219 states and 21550 transitions. Second operand 6 states. [2018-09-14 17:21:16,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:21:16,652 INFO L93 Difference]: Finished difference Result 35956 states and 55845 transitions. [2018-09-14 17:21:16,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:21:16,654 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2018-09-14 17:21:16,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:21:16,737 INFO L225 Difference]: With dead ends: 35956 [2018-09-14 17:21:16,737 INFO L226 Difference]: Without dead ends: 21743 [2018-09-14 17:21:16,786 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:21:16,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21743 states. [2018-09-14 17:21:17,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21743 to 21651. [2018-09-14 17:21:17,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21651 states. [2018-09-14 17:21:17,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21651 states to 21651 states and 30247 transitions. [2018-09-14 17:21:17,235 INFO L78 Accepts]: Start accepts. Automaton has 21651 states and 30247 transitions. Word has length 181 [2018-09-14 17:21:17,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:21:17,235 INFO L480 AbstractCegarLoop]: Abstraction has 21651 states and 30247 transitions. [2018-09-14 17:21:17,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:21:17,236 INFO L276 IsEmpty]: Start isEmpty. Operand 21651 states and 30247 transitions. [2018-09-14 17:21:17,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-09-14 17:21:17,249 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:21:17,249 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-14 17:21:17,249 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:21:17,250 INFO L82 PathProgramCache]: Analyzing trace with hash -849945464, now seen corresponding path program 1 times [2018-09-14 17:21:17,250 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:21:17,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:17,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:17,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:17,252 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:21:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:21:17,931 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 111 proven. 67 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-14 17:21:17,932 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:21:17,932 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 17:21:17,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:17,948 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:21:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:21:18,057 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:21:18,556 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:21:18,556 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:21:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:21:19,436 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:21:19,436 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 3 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 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:21:19,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:19,468 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:21:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:21:19,653 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:21:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:21:20,178 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:21:20,525 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:21:20,536 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:21:20,536 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-14 17:21:20,536 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:21:20,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:21:20,539 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:21:20,539 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-09-14 17:21:20,540 INFO L87 Difference]: Start difference. First operand 21651 states and 30247 transitions. Second operand 9 states. [2018-09-14 17:21:41,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:21:41,771 INFO L93 Difference]: Finished difference Result 66713 states and 105908 transitions. [2018-09-14 17:21:41,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-14 17:21:41,774 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 232 [2018-09-14 17:21:41,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:21:42,042 INFO L225 Difference]: With dead ends: 66713 [2018-09-14 17:21:42,042 INFO L226 Difference]: Without dead ends: 45068 [2018-09-14 17:21:42,161 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 979 GetRequests, 938 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=359, Invalid=1281, Unknown=0, NotChecked=0, Total=1640 [2018-09-14 17:21:42,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45068 states. [2018-09-14 17:21:43,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45068 to 44019. [2018-09-14 17:21:43,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44019 states. [2018-09-14 17:21:43,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44019 states to 44019 states and 57466 transitions. [2018-09-14 17:21:43,861 INFO L78 Accepts]: Start accepts. Automaton has 44019 states and 57466 transitions. Word has length 232 [2018-09-14 17:21:43,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:21:43,862 INFO L480 AbstractCegarLoop]: Abstraction has 44019 states and 57466 transitions. [2018-09-14 17:21:43,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:21:43,862 INFO L276 IsEmpty]: Start isEmpty. Operand 44019 states and 57466 transitions. [2018-09-14 17:21:43,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-09-14 17:21:43,874 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:21:43,875 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-14 17:21:43,875 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:21:43,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1793805499, now seen corresponding path program 1 times [2018-09-14 17:21:43,875 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:21:43,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:43,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:43,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:43,877 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:21:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:21:44,265 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 108 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:21:44,265 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:21:44,266 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 17:21:44,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:44,283 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:21:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:21:44,378 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:21:45,000 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-09-14 17:21:45,001 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:21:45,909 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 108 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:21:45,944 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:21:45,944 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-09-14 17:21:45,944 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:21:45,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:21:45,945 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:21:45,945 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:21:45,947 INFO L87 Difference]: Start difference. First operand 44019 states and 57466 transitions. Second operand 5 states. [2018-09-14 17:21:57,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:21:57,204 INFO L93 Difference]: Finished difference Result 133728 states and 183387 transitions. [2018-09-14 17:21:57,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:21:57,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 257 [2018-09-14 17:21:57,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:21:57,928 INFO L225 Difference]: With dead ends: 133728 [2018-09-14 17:21:57,928 INFO L226 Difference]: Without dead ends: 89715 [2018-09-14 17:21:58,011 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 512 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:21:58,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89715 states. [2018-09-14 17:21:59,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89715 to 86846. [2018-09-14 17:21:59,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86846 states. [2018-09-14 17:21:59,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86846 states to 86846 states and 110616 transitions. [2018-09-14 17:21:59,643 INFO L78 Accepts]: Start accepts. Automaton has 86846 states and 110616 transitions. Word has length 257 [2018-09-14 17:21:59,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:21:59,644 INFO L480 AbstractCegarLoop]: Abstraction has 86846 states and 110616 transitions. [2018-09-14 17:21:59,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:21:59,644 INFO L276 IsEmpty]: Start isEmpty. Operand 86846 states and 110616 transitions. [2018-09-14 17:21:59,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-09-14 17:21:59,656 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:21:59,656 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-14 17:21:59,657 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:21:59,657 INFO L82 PathProgramCache]: Analyzing trace with hash 342640970, now seen corresponding path program 1 times [2018-09-14 17:21:59,657 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:21:59,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:59,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:59,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:59,658 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:21:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:00,510 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 9 proven. 102 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-14 17:22:00,511 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:22:00,511 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 17:22:00,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:00,526 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:22:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:00,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:22:01,311 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-09-14 17:22:01,311 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:22:01,534 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2018-09-14 17:22:01,916 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 16 [2018-09-14 17:22:02,544 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 108 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:22:02,931 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:22:02,931 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-09-14 17:22:02,931 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:22:02,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:22:02,933 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:22:02,933 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:22:02,933 INFO L87 Difference]: Start difference. First operand 86846 states and 110616 transitions. Second operand 5 states. [2018-09-14 17:22:15,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:22:15,452 INFO L93 Difference]: Finished difference Result 193847 states and 248076 transitions. [2018-09-14 17:22:15,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-14 17:22:15,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 284 [2018-09-14 17:22:15,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:22:15,771 INFO L225 Difference]: With dead ends: 193847 [2018-09-14 17:22:15,771 INFO L226 Difference]: Without dead ends: 107007 [2018-09-14 17:22:15,925 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 566 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-09-14 17:22:16,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107007 states. [2018-09-14 17:22:18,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107007 to 105171. [2018-09-14 17:22:18,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105171 states. [2018-09-14 17:22:18,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105171 states to 105171 states and 129985 transitions. [2018-09-14 17:22:18,282 INFO L78 Accepts]: Start accepts. Automaton has 105171 states and 129985 transitions. Word has length 284 [2018-09-14 17:22:18,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:22:18,282 INFO L480 AbstractCegarLoop]: Abstraction has 105171 states and 129985 transitions. [2018-09-14 17:22:18,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:22:18,283 INFO L276 IsEmpty]: Start isEmpty. Operand 105171 states and 129985 transitions. [2018-09-14 17:22:18,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-09-14 17:22:18,301 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:22:18,302 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:22:18,302 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:22:18,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1509288900, now seen corresponding path program 1 times [2018-09-14 17:22:18,303 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:22:18,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:18,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:18,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:18,304 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:22:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:22:19,034 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:22:19,034 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:22:19,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:19,048 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:22:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:19,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:22:19,649 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:22:19,649 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:22:20,723 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:22:20,747 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:22:20,747 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:22:20,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:20,765 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:22:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:20,988 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:22:21,108 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:22:21,108 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:22:21,376 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:22:21,380 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:22:21,381 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 17:22:21,381 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:22:21,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:22:21,382 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:22:21,383 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:22:21,383 INFO L87 Difference]: Start difference. First operand 105171 states and 129985 transitions. Second operand 9 states. [2018-09-14 17:22:37,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:22:37,440 INFO L93 Difference]: Finished difference Result 225936 states and 306156 transitions. [2018-09-14 17:22:37,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-14 17:22:37,440 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 342 [2018-09-14 17:22:37,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:22:37,879 INFO L225 Difference]: With dead ends: 225936 [2018-09-14 17:22:37,879 INFO L226 Difference]: Without dead ends: 104070 [2018-09-14 17:22:38,895 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1384 GetRequests, 1364 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-09-14 17:22:38,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104070 states. [2018-09-14 17:22:40,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104070 to 96520. [2018-09-14 17:22:40,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96520 states. [2018-09-14 17:22:40,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96520 states to 96520 states and 124701 transitions. [2018-09-14 17:22:40,699 INFO L78 Accepts]: Start accepts. Automaton has 96520 states and 124701 transitions. Word has length 342 [2018-09-14 17:22:40,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:22:40,700 INFO L480 AbstractCegarLoop]: Abstraction has 96520 states and 124701 transitions. [2018-09-14 17:22:40,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:22:40,700 INFO L276 IsEmpty]: Start isEmpty. Operand 96520 states and 124701 transitions. [2018-09-14 17:22:40,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2018-09-14 17:22:40,726 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:22:40,727 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:22:40,727 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:22:40,727 INFO L82 PathProgramCache]: Analyzing trace with hash -653845554, now seen corresponding path program 1 times [2018-09-14 17:22:40,727 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:22:40,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:40,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:40,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:40,729 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:22:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:41,345 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 13 [2018-09-14 17:22:41,719 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 232 proven. 133 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 17:22:41,720 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:22:41,720 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:22:41,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:41,729 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:22:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:41,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:22:42,012 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 375 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-09-14 17:22:42,012 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:22:43,262 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 287 proven. 73 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 17:22:43,284 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:22:43,284 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:22:43,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:43,303 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:22:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:43,573 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:22:43,743 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 375 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-09-14 17:22:43,743 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:22:44,065 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 287 proven. 73 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 17:22:44,067 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:22:44,068 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 5, 5] total 18 [2018-09-14 17:22:44,068 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:22:44,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-14 17:22:44,069 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-14 17:22:44,069 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-09-14 17:22:44,069 INFO L87 Difference]: Start difference. First operand 96520 states and 124701 transitions. Second operand 15 states. [2018-09-14 17:23:23,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:23:23,212 INFO L93 Difference]: Finished difference Result 253011 states and 356822 transitions. [2018-09-14 17:23:23,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-14 17:23:23,212 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 403 [2018-09-14 17:23:23,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:23:23,692 INFO L225 Difference]: With dead ends: 253011 [2018-09-14 17:23:23,693 INFO L226 Difference]: Without dead ends: 154900 [2018-09-14 17:23:23,929 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1663 GetRequests, 1619 SyntacticMatches, 7 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=331, Invalid=1151, Unknown=0, NotChecked=0, Total=1482 [2018-09-14 17:23:24,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154900 states. [2018-09-14 17:23:26,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154900 to 152106. [2018-09-14 17:23:26,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152106 states. [2018-09-14 17:23:26,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152106 states to 152106 states and 198454 transitions. [2018-09-14 17:23:26,877 INFO L78 Accepts]: Start accepts. Automaton has 152106 states and 198454 transitions. Word has length 403 [2018-09-14 17:23:26,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:23:26,878 INFO L480 AbstractCegarLoop]: Abstraction has 152106 states and 198454 transitions. [2018-09-14 17:23:26,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-14 17:23:26,878 INFO L276 IsEmpty]: Start isEmpty. Operand 152106 states and 198454 transitions. [2018-09-14 17:23:26,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-09-14 17:23:26,931 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:23:26,931 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:23:26,931 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:23:26,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1309981481, now seen corresponding path program 1 times [2018-09-14 17:23:26,932 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:23:26,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:26,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:26,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:26,933 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:23:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:27,658 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 403 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:23:27,658 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:23:27,658 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:23:27,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:27,667 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:23:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:27,811 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:23:28,020 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 403 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:23:28,020 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:23:29,266 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 403 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:23:29,288 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:23:29,289 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:23:29,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:29,305 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:23:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:29,627 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:23:30,040 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 403 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:23:30,040 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:23:30,191 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 17:23:30,709 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 403 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:23:30,712 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:23:30,712 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 17:23:30,712 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:23:30,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:23:30,714 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:23:30,714 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:23:30,714 INFO L87 Difference]: Start difference. First operand 152106 states and 198454 transitions. Second operand 9 states. Received shutdown request... [2018-09-14 17:23:47,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-14 17:23:47,725 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:23:47,731 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:23:47,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:23:47 BoogieIcfgContainer [2018-09-14 17:23:47,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:23:47,733 INFO L168 Benchmark]: Toolchain (without parser) took 224239.09 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 4.0 GB in the end (delta: -2.6 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-09-14 17:23:47,734 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 17:23:47,734 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2258.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-14 17:23:47,735 INFO L168 Benchmark]: Boogie Procedure Inliner took 265.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-14 17:23:47,737 INFO L168 Benchmark]: Boogie Preprocessor took 1004.03 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 942.1 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. [2018-09-14 17:23:47,738 INFO L168 Benchmark]: RCFGBuilder took 10863.77 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 643.8 MB). Peak memory consumption was 643.8 MB. Max. memory is 7.1 GB. [2018-09-14 17:23:47,741 INFO L168 Benchmark]: TraceAbstraction took 209840.86 ms. Allocated memory was 2.5 GB in the beginning and 4.7 GB in the end (delta: 2.2 GB). Free memory was 1.7 GB in the beginning and 4.0 GB in the end (delta: -2.3 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-09-14 17:23:47,748 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2258.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 265.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1004.03 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 942.1 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10863.77 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 643.8 MB). Peak memory consumption was 643.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209840.86 ms. Allocated memory was 2.5 GB in the beginning and 4.7 GB in the end (delta: 2.2 GB). Free memory was 1.7 GB in the beginning and 4.0 GB in the end (delta: -2.3 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 174]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 174). Cancelled while BasicCegarLoop was constructing difference of abstraction (152106states) and FLOYD_HOARE automaton (currently 13 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (325481 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 209.7s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 176.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1741 SDtfs, 56354 SDslu, 3349 SDs, 0 SdLazy, 104618 SolverSat, 20983 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 137.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7216 GetRequests, 7030 SyntacticMatches, 26 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 9.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=152106occurred 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: 11.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 16355 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 17.2s InterpolantComputationTime, 6196 NumberOfCodeBlocks, 6196 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 9672 ConstructedInterpolants, 0 QuantifiedInterpolants, 13944639 SizeOfPredicates, 5 NumberOfNonLiveVariables, 5816 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 31 InterpolantComputations, 7 PerfectInterpolantSequences, 7081/7768 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/Problem12_label15_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-23-47-765.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label15_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-23-47-765.csv Completed graceful shutdown